fix(platform-wallet): act on swept transactions at the persistence seam - #4406
fix(platform-wallet): act on swept transactions at the persistence seam#4406romchornyi wants to merge 97 commits into
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Brings in dashpay/rust-dashcore#961, which stops a never-broadcast transaction from crediting money that does not exist, plus the seven commits ahead of the previous pin. #961 adds `WalletEvent::TransactionsSwept`, the first subtractive event on the wallet bus: it names transactions the wallet removed because a later, final transaction provably beat them to their inputs. Three consumers matched exhaustively on `WalletEvent` and now handle it. - The balance handler routes it like any other balance-bearing variant. A sweep is the one event that can lower the balance, and its snapshot is post-removal like every other; dropping it would leave the corrected-away amount on screen until some later event happened to arrive. - The DashPay payment hooks ignore it: it carries txids, not records. A sent payment whose transaction was swept stays `Pending` — the hooks only advance a payment forward, and inventing a failure transition is a change to the payment state machine, not to event routing. - The core bridge projects it into a new `CoreChangeSet.swept_txids`, the only subtractive field on that type, and `is_empty_no_records` counts it — that filter decides whether the persister is called at all, so a sweep-only round has to survive it on the strength of the txids alone. Nothing consumes `swept_txids` yet; the persistence seam follows.
The persistence seam had no way to say "this row is gone". Every field on the changeset was additive, so a swept transaction — a recorded spend that a later, final transaction beat to one of its inputs, and that can therefore never confirm — stayed on disk after Rust dropped it, came back at the next load, and re-created the balance the wallet had just corrected. That is the bug rust-dashcore#961 fixes, reappearing one layer up on every consumer that mirrors state. `WalletChangeSetFFI` gains `swept_txids`, wallet-scoped rather than per-account: the upstream event is wallet-scoped and the persister deletes by txid, so the row it deletes carries its own account link. Both persisters apply it the same way, after the additive part of the round — the transaction that beat the swept one to its inputs usually rides along in the same changeset, so by the time the removal runs its claim is already recorded: - the transaction row goes, and the outputs it created go with it (a cascade on both sides — SwiftData `PersistentTransaction.outputs`, the Room `txos.txid` foreign key); - the coins it claimed to *spend* are released first. The relationship only nils the link and would leave `isSpent` set, i.e. a coin marked spent by a transaction that no longer exists — invisible to the wallet and to the restore set, the same lost-funds shape as the phantom balance, inverted. On Android the release has to run before the delete: once the FK nulls `spendingTxid` there is nothing left to find those rows by. Transaction rows are keyed by txid alone and shared across wallets by design, and a sweep is a statement about the transaction rather than about one wallet's view of it, so neither persister narrows the delete to the emitting wallet.
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📝 WalkthroughWalkthroughThe wallet changeset now carries ordered swept transaction IDs, superseding transaction IDs, and released outpoints. Rust exposes them through FFI and JNI. Kotlin, Swift, and SQLite persistence handlers remove swept transactions and update related TXO spend claims. ChangesSwept transaction persistence
Estimated code review effort: 4 (Complex) | ~60 minutes Merge Risk: 🟡 Moderate · up to This change removes swept transactions and releases their spend claims, but the Android persistence path can still clear a newer spend claim in a coalesced update, restoring a coin that should remain spent and leaving wallet state incorrect. The test buffer-lifetime issue should also be corrected before merging. Sequence Diagram(s)sequenceDiagram
participant CoreChangeSet
participant WalletChangeSetFFI
participant tramp_persist_wallet_changeset
participant PlatformWalletPersistenceHandler
participant TxoDao
CoreChangeSet->>WalletChangeSetFFI: expose ordered sweep batches
WalletChangeSetFFI->>tramp_persist_wallet_changeset: provide sweep data
tramp_persist_wallet_changeset->>PlatformWalletPersistenceHandler: invoke sweep callback
PlatformWalletPersistenceHandler->>TxoDao: hold swept inputs and release outpoints
PlatformWalletPersistenceHandler-->>tramp_persist_wallet_changeset: return persistence status
Possibly related PRs
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Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## v4.2-dev #4406 +/- ##
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- Coverage 87.56% 87.37% -0.19%
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Files 2698 2727 +29
Lines 344559 346906 +2347
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+ Hits 301719 303125 +1406
- Misses 42840 43781 +941
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Preliminary review — Codex only
Verified two in-scope persistence defects at the exact PR head. The sweep projection can restore an output already consumed by an irrelevant winning transaction, and the Swift path can silently acknowledge a sweep whose required fetch failed; both undermine the durability guarantee this PR introduces.
Source: reviewer backend gpt-5.6-sol; final verifier backend gpt-5.6-sol. openclaw-agent/cliproxy/gpt-5.6-sol is orchestration-only and is not reviewer evidence.
Validated blockers were found in the Codex precheck. Opus is deferred until a fresh Codex revalidation clears the blocker gate.
Review provenance
- Codex reviewers:
gpt-5.6-sol— general (completed) - Verifier:
gpt-5.6-sol— verifier - Sonnet: not run (deferred by blocker gate)
🔴 2 blocking
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In `packages/rs-platform-wallet/src/changeset/core_bridge.rs`:
- [BLOCKING] packages/rs-platform-wallet/src/changeset/core_bridge.rs:728-730: Preserve the winner's spent input when it is irrelevant to the wallet
The pinned rust-dashcore explicitly allows a final winner to sweep a loser even when the winner is classified as irrelevant. Its `test_an_irrelevant_winner_still_sweeps_its_loser` covers a winner that spends the wallet's funding output but pays only external addresses, so no `TransactionDetected` record is emitted for that winner. Upstream's sweep deliberately retains the winner's shared inputs in `spent_outpoints`, but this projection carries only the loser txids while the Swift and Kotlin persisters release every input claim attached to each loser. After restart, the consumed funding TXO is therefore included in the unspent restore set, and there is no winner record to mark it spent again. The persistence seam must carry enough information to retain winner-consumed outpoints while releasing only the loser's extra inputs, and the irrelevant-winner scenario needs end-to-end persistence coverage.
In `packages/swift-sdk/Sources/SwiftDashSDK/PlatformWallet/PlatformWalletPersistenceHandler.swift`:
- [BLOCKING] packages/swift-sdk/Sources/SwiftDashSDK/PlatformWallet/PlatformWalletPersistenceHandler.swift:866: Do not treat a failed sweep fetch as an unknown txid
`try?` maps both a successful empty fetch and a thrown SwiftData fetch to the same no-op. If the fetch throws, the required transaction deletion is skipped, but `persistWalletChangesetCallback` still returns success and `endChangeset` may save the round successfully. Rust then treats the subtractive changeset as durable and clears it, leaving the swept transaction available for replay on the next wallet load. Make the sweep lookup throwing, propagate its failure through `persistWalletChangesetCallback`, and let the failed changeset round roll back; only a successful fetch with no matching row should remain an idempotent no-op.
| // No `spent_utxos` entry for the inputs: the winner's own record | ||
| // flows through `TransactionDetected` / `BlockProcessed` and | ||
| // claims them. This arm only names the dead. |
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🔴 Blocking: Preserve the winner's spent input when it is irrelevant to the wallet
The pinned rust-dashcore explicitly allows a final winner to sweep a loser even when the winner is classified as irrelevant. Its test_an_irrelevant_winner_still_sweeps_its_loser covers a winner that spends the wallet's funding output but pays only external addresses, so no TransactionDetected record is emitted for that winner. Upstream's sweep deliberately retains the winner's shared inputs in spent_outpoints, but this projection carries only the loser txids while the Swift and Kotlin persisters release every input claim attached to each loser. After restart, the consumed funding TXO is therefore included in the unspent restore set, and there is no winner record to mark it spent again. The persistence seam must carry enough information to retain winner-consumed outpoints while releasing only the loser's extra inputs, and the irrelevant-winner scenario needs end-to-end persistence coverage.
source: ['codex']
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Resolved in 49e5a5f — Preserve the winner's spent input when it is irrelevant to the wallet no longer present.
Auto-resolved by the review system based on the latest commit diff. If you believe this was closed in error, reopen the thread.
| ) | ||
| descriptor.fetchLimit = 1 | ||
| descriptor.relationshipKeyPathsForPrefetching = [\.inputs] | ||
| guard let row = try? backgroundContext.fetch(descriptor).first else { return } |
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🔴 Blocking: Do not treat a failed sweep fetch as an unknown txid
try? maps both a successful empty fetch and a thrown SwiftData fetch to the same no-op. If the fetch throws, the required transaction deletion is skipped, but persistWalletChangesetCallback still returns success and endChangeset may save the round successfully. Rust then treats the subtractive changeset as durable and clears it, leaving the swept transaction available for replay on the next wallet load. Make the sweep lookup throwing, propagate its failure through persistWalletChangesetCallback, and let the failed changeset round roll back; only a successful fetch with no matching row should remain an idempotent no-op.
source: ['codex']
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Resolved in 49e5a5f — Do not treat a failed sweep fetch as an unknown txid no longer present.
Auto-resolved by the review system based on the latest commit diff. If you believe this was closed in error, reopen the thread.
… throws Two findings. **A released input could be one the winner consumed.** Upstream is explicit that a sweep frees only the loser's *extra* inputs — "a loser spending A+B against a winner spending only A must leave A marked and free B" — and the winner does not have to be wallet-relevant: `test_an_irrelevant_winner_ still_sweeps_its_loser` covers a winner that spends our funding output and pays entirely to outside addresses, so no record for it ever reaches the persister. Both persisters released every claim the loser held, so after a restart that consumed coin came back in the unspent restore set with no winner record left to re-spend it. The changeset now carries the pairing: `CoreChangeSet.swept_transactions` (and `SweptTransactionFFI`) name the removed transaction *and* the transaction that settled its inputs. That is enough to tell the two kinds apart without shipping the winner's input list: - a wallet-relevant winner has re-pointed the shared inputs at itself earlier in the same round, so releasing whatever still points at the loser releases exactly the loser's extras; - a winner absent from the store is the irrelevant case, where nothing distinguishes them — so the claims stand. The wallet holds no UTXO for either kind either, and upstream documents a rescan as the recovery path for the freed ones. Keeping a coin out of the restore set is recoverable; handing back one the chain has already spent is not. **A failed fetch read as "no such transaction".** `try?` collapsed a SwiftData failure into the same no-op as a successful miss, and the round still reported success — Rust would clear the sweep while the row it named survived to be replayed at the next load. The lookups throw now, and `persistWalletChangeset` returns a failure the C shim forwards, so the round rolls back. Tests: the irrelevant-winner scenario end to end on both persisters, plus the A/B split, on top of the existing deletion coverage.
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Preliminary review — Codex only
The Swift fetch-failure path is now correctly propagated so a failed sweep rolls back instead of being acknowledged as durable. However, the irrelevant-winner path still restores a consumed funding output after restart because the seam carries only the winner txid, while production sweep losers are unconfirmed and their persisted inputs remain marked unspent.
Source: reviewer backend gpt-5.6-sol; final verifier backend gpt-5.6-sol. openclaw-agent/cliproxy/gpt-5.6-sol is orchestration-only and not reviewer evidence.
Validated blockers were found in the Codex precheck. Opus is deferred until a fresh Codex revalidation clears the blocker gate.
Review provenance
- Codex reviewers:
gpt-5.6-sol— general (completed) - Verifier:
gpt-5.6-sol— verifier - Sonnet: not run (deferred by blocker gate)
🔴 1 blocking
1 carried-forward finding(s) already raised on this PR; not re-posting as new inline comments.
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In `packages/rs-platform-wallet/src/changeset/core_bridge.rs`:
- [BLOCKING] packages/rs-platform-wallet/src/changeset/core_bridge.rs:740-745: Preserve the winner's spent input when it is irrelevant to the wallet
(existing thread: https://github.com/dashpay/platform/pull/4406#discussion_r3783319383)
Pairing each loser with only `superseded_by` does not preserve the outpoints consumed by an irrelevant winner. The pinned rust-dashcore sweep selects only losers for which `!record.is_confirmed()` and explicitly removes the winner's inputs from the set it releases. Both persistence adapters, however, set `isSpent` only when the spending transaction reaches an in-block context, so a real mempool or InstantSend loser has its input linked to the loser while `isSpent` remains `false`. If the winner is irrelevant, no winner record reaches the store; Swift and Kotlin therefore skip `releaseSpendClaim`, delete the loser, and let the relationship or foreign key become null while the already-false `isSpent` flag remains unchanged. The next restore query includes that consumed output as spendable. The new irrelevant-winner tests mask this path by seeding the loser with context `2` (`InBlock`) and `isSpent = true`, but upstream excludes confirmed records from sweeping. Carry the winner's consumed outpoints, or equivalent authoritative spent-state information, across the persistence seam so shared inputs are explicitly kept spent while only loser-exclusive inputs are released; this must not depend on a winner record being persisted in the same round.
The previous round paired each loser with its winner but still leaned on the winner's record to keep the shared input spent, and that only works when such a record exists. It usually does not look like the tests said it did. Upstream sweeps only *unconfirmed* records (`!record.is_confirmed()`), and both mirrors flip `isSpent` solely for a spender that reached a block — so a real swept loser holds its inputs by link alone, `isSpent == false`. Deleting the loser nils the link, and every coin it named, the winner's included, fell straight back into the restore query (`isSpent == false`). The earlier tests hid this by seeding the loser at `InBlock` with `isSpent = true`, a state upstream never sweeps. So the branch that cannot prove anything now holds rather than releases: - winner present in the store — it is wallet-relevant, its record has already re-pointed the inputs it took at itself, so what still points at the loser is the loser's own and stays spendable; - winner absent — it pays only to outside addresses and is never recorded. Nothing separates the coin it consumed from the loser's extras, so all of them are marked spent with no spender named, keeping them out of the restore set. The wallet holds no UTXO for either kind either. Handing back a coin the chain has already spent is the one outcome that cannot be undone from here, which is why the uncertainty resolves that way — and the hold is not permanent: the wallet is authoritative about which coins are free, and the utxo-added path now clears a mark that has no spender behind it, so a rescan re-delivering a coin releases it. Tests now model the unconfirmed loser upstream actually sweeps, and cover the release path, the hold, and the re-delivery that lifts it, on both persisters.
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Preliminary review — Codex only
The current head fixes the prior over-crediting path by keeping unresolved loser inputs out of the restore set. Two blocking persistence defects remain: the mobile handlers can strand loser-exclusive inputs based on event timing, and the canonical SQLite persister ignores the new subtractive field entirely.
Source: reviewer backend gpt-5.6-sol; final verifier backend gpt-5.6-sol. openclaw-agent/cliproxy/gpt-5.6-sol is orchestration-only and not reviewer evidence.
Validated blockers were found in the Codex precheck. Opus is deferred until a fresh Codex revalidation clears the blocker gate.
Review provenance
- Codex reviewers:
gpt-5.6-sol— general (completed) - Verifier:
gpt-5.6-sol— verifier - Sonnet: not run (deferred by blocker gate)
🔴 2 blocking
1 additional finding(s) omitted (not in diff).
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In `packages/rs-platform-wallet/src/changeset/core_bridge.rs`:
- [BLOCKING] packages/rs-platform-wallet/src/changeset/core_bridge.rs:740-745: Do not hold loser-exclusive inputs when the winner record is absent
Winner-row presence is not a reliable way to distinguish shared inputs from loser-exclusive inputs. The upstream block path emits `TransactionsSwept` for each winning transaction before the later `BlockProcessed` event, while `run_wallet_event_adapter` stops its non-waiting drain as soon as `try_recv` observes an empty channel. The sweep can therefore be committed before a wallet-relevant winner has been queued or persisted. For a loser spending A+B and a winner spending only A, both mobile handlers then mark A and B spent without a spender. The later winner record re-points A but never touches B, leaving the genuinely unspent B permanently excluded from ordinary cold-start restoration. An irrelevant winner produces the same unresolved state without any later record, and normal synchronization resumes from the persisted height rather than replaying the historical funding transaction. Carry the winner-consumed outpoints, or the exact loser-input release set computed upstream, so persistence can retain A and release B independently of transaction-row timing.
In `packages/rs-platform-wallet-storage/src/sqlite/schema/core_state.rs`:
- [BLOCKING] packages/rs-platform-wallet-storage/src/sqlite/schema/core_state.rs:17-22: Apply transaction sweeps in the SQLite persister
This PR makes `swept_transactions` a non-empty part of `CoreChangeSet`, but the canonical `SqlitePersister`'s `apply` function never reads it. A sweep-only changeset is therefore accepted and flushed successfully while the dead row remains in `core_transactions`, its created outputs remain in `core_utxos`, and its input state remains unchanged. This defeats the subtractive persistence guarantee for this first-party backend. It can also leave an InstantSend loser visible through `get_core_tx_record`, which sent-payment reconciliation treats as final and can use to advance a dead DashPay payment to `Confirmed`. Apply each sweep transactionally by removing the loser record and outputs and updating shared versus loser-exclusive inputs using authoritative outpoint information, with coverage for a sweep-only SQLite round.
| swept_transactions: txids | ||
| .iter() | ||
| .map(|txid| SweptTransaction { | ||
| txid: *txid, | ||
| superseded_by: *superseded_by, | ||
| }) |
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🔴 Blocking: Do not hold loser-exclusive inputs when the winner record is absent
Winner-row presence is not a reliable way to distinguish shared inputs from loser-exclusive inputs. The upstream block path emits TransactionsSwept for each winning transaction before the later BlockProcessed event, while run_wallet_event_adapter stops its non-waiting drain as soon as try_recv observes an empty channel. The sweep can therefore be committed before a wallet-relevant winner has been queued or persisted. For a loser spending A+B and a winner spending only A, both mobile handlers then mark A and B spent without a spender. The later winner record re-points A but never touches B, leaving the genuinely unspent B permanently excluded from ordinary cold-start restoration. An irrelevant winner produces the same unresolved state without any later record, and normal synchronization resumes from the persisted height rather than replaying the historical funding transaction. Carry the winner-consumed outpoints, or the exact loser-input release set computed upstream, so persistence can retain A and release B independently of transaction-row timing.
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Resolved in b57fb20 — Do not hold loser-exclusive inputs when the winner record is absent no longer present.
Auto-resolved by the review system based on the latest commit diff. If you believe this was closed in error, reopen the thread.
Inferring the split from the winner's row was wrong twice over, and the second way is not fixable downstream: the block path emits `TransactionsSwept` per winning transaction *before* the `BlockProcessed` that carries the winner's record, and `run_wallet_event_adapter` ends its non-waiting drain as soon as `try_recv` sees an empty channel. So a sweep can commit a whole round before a wallet-relevant winner is even queued. For a loser spending A+B against a winner taking only A, both mobile handlers then held A and B; the winner's later record re-pointed A and never touched B, stranding a genuinely unspent coin outside cold-start restoration for good. Upstream already draws the line and now reports it (rust-dashcore#961's `release_spent_marks`, exposed by dashpay/rust-dashcore#962): the pin moves to 51eafd8c and `WalletEvent::TransactionsSwept.released_outpoints` names the inputs no surviving transaction spends. That set flows through `CoreChangeSet.swept_released_outpoints` and `WalletChangeSetFFI` to all three persisters, which now apply it verbatim — an outpoint it names goes back to spendable, every other input the removed transaction claimed stays spent, and neither depends on when the winner's record shows up or whether it exists at all. Also fixes the second blocker: the canonical SQLite persister ignored `swept_transactions` entirely, so a sweep-only round flushed successfully while the dead row stayed in `core_transactions`, its outputs in `core_utxos`, and its inputs untouched — leaving an InstantSend loser answerable through `get_core_tx_record`, which sent-payment reconciliation reads as final and would use to advance a dead DashPay payment to `Confirmed`. `core_state::apply` now applies sweeps in the same transaction as the rest of the round. The Swift and Kotlin backstop stays: a coin marked spent with no spender on record is cleared when the wallet re-delivers it as a UTXO, so a rescan still recovers anything an older row was left holding.
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Inline comments:
In
`@packages/kotlin-sdk/sdk/src/main/kotlin/org/dashfoundation/dashsdk/persistence/dao/TxoDao.kt`:
- Around line 64-74: Restrict TxoDao.releaseByOutpoint to update only rows whose
spendingTxid is already null, preventing it from clearing a later spend claim.
In PlatformWalletPersistenceHandler lines 1035-1043, retain the existing
hold-then-release order; no direct change is needed because the DAO predicate
protects later claims.
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📒 Files selected for processing (11)
Cargo.tomlpackages/kotlin-sdk/sdk/src/main/kotlin/org/dashfoundation/dashsdk/ffi/NativePersistenceBridge.ktpackages/kotlin-sdk/sdk/src/main/kotlin/org/dashfoundation/dashsdk/persistence/PlatformWalletPersistenceHandler.ktpackages/kotlin-sdk/sdk/src/main/kotlin/org/dashfoundation/dashsdk/persistence/dao/TxoDao.ktpackages/kotlin-sdk/sdk/src/test/kotlin/org/dashfoundation/dashsdk/persistence/PlatformWalletPersistenceHandlerTest.ktpackages/rs-platform-wallet-ffi/src/core_wallet_types.rspackages/rs-platform-wallet/src/changeset/changeset.rspackages/rs-platform-wallet/src/changeset/core_bridge.rspackages/rs-unified-sdk-jni/src/persistence.rspackages/swift-sdk/Sources/SwiftDashSDK/PlatformWallet/PlatformWalletPersistenceHandler.swiftpackages/swift-sdk/SwiftTests/SwiftDashSDKTests/SweptTransactionPersistTests.swift
🚧 Files skipped from review as they are similar to previous changes (5)
- Cargo.toml
- packages/rs-unified-sdk-jni/src/persistence.rs
- packages/kotlin-sdk/sdk/src/test/kotlin/org/dashfoundation/dashsdk/persistence/PlatformWalletPersistenceHandlerTest.kt
- packages/rs-platform-wallet/src/changeset/core_bridge.rs
- packages/swift-sdk/Sources/SwiftDashSDK/PlatformWallet/PlatformWalletPersistenceHandler.swift
…aimed `releaseByOutpoint` matched on the outpoint alone, so it cleared whatever spend claim the row happened to hold. A round can carry both a release and a later transaction that legitimately spends the freed coin — merging folds several events together, and every record is written before sweeps are processed — so by the time the release ran the coin could already be claimed again. Clearing that claim put a spent coin back in the restore set, which is the failure the sweep handling exists to prevent. Restrict the update to rows with `spendingTxid IS NULL`. Paired with the existing hold-then-release order that is exactly the right set: holding detaches the rows this round's removals still claim, so only those qualify, while a row a live transaction claims keeps it. Swift never had this: `applySweptTransaction` walks `PersistentTransaction.inputs`, the inverse of `spendingTransaction`, so it only ever touches rows still pointing at the removed transaction. Keying the Kotlin query on the outpoint is what lost that property.
…persister `swept_transactions` became a non-empty part of `CoreChangeSet`, but `core_state::apply` never read it. A sweep-only changeset was therefore accepted and flushed successfully while the dead row stayed in `core_transactions`, the outputs it created stayed in `core_utxos`, and its input state was untouched — the subtractive guarantee simply did not hold for this first-party backend. It also left an InstantSend loser answerable through `get_core_tx_record`, which sent-payment reconciliation treats as final and can use to advance a dead DashPay payment to `Confirmed`. Apply each sweep in the same transaction as the rest of the round, after the additive writes: delete the removed transaction and the UTXOs it created, then resolve the coins it claimed to spend from `swept_released_outpoints` — an outpoint named there goes back to spendable, every other input it claimed stays spent because the transaction that beat it took them. Each input is written outright rather than only when it changes, since a coin the sweep did not free must end the round out of the unspent query even when nothing had marked it spent yet: upstream sweeps only unconfirmed records, whose spends this schema does not mark.
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Preliminary review — Codex only
The current head resolves both prior blockers by carrying authoritative released outpoints through the persistence seam and applying sweeps in SQLite. A blocking SQLite merge-order defect remains, and SQLite sweep cleanup also leaves stale InstantLock rows behind.
Source: reviewer backend gpt-5.6-sol; final verifier backend gpt-5.6-sol; openclaw-agent/cliproxy/gpt-5.6-sol is orchestration-only and not reviewer evidence.
Validated blockers were found in the Codex precheck. Opus is deferred until a fresh Codex revalidation clears the blocker gate.
Review provenance
- Codex reviewers:
gpt-5.6-sol— general (completed) - Verifier:
gpt-5.6-sol— verifier - Sonnet: not run (deferred by blocker gate)
🔴 1 blocking | 🟡 1 suggestion(s)
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These findings are from an automated code review. Verify each finding against the current code and only fix it if needed.
In `packages/rs-platform-wallet-storage/src/sqlite/schema/core_state.rs`:
- [BLOCKING] packages/rs-platform-wallet-storage/src/sqlite/schema/core_state.rs:216-220: Do not release an outpoint a later record already reclaimed
`swept_released_outpoints` describes wallet state when each sweep event was emitted, but the event adapter can merge that event with a later transaction that spends one of the newly freed coins. SQLite applies every `spent_utxos` entry first, setting the coin to `spent = 1`, and then this unconditional assignment sets it back to `spent = 0` because the outpoint remains in the merged release set. Unlike the Kotlin backend, SQLite does not retain the identity of the current spender, so the persisted mirror incorrectly exposes a coin consumed by the later transaction as unspent. Before releasing an outpoint, preserve any claim made by a non-swept transaction record in the same changeset, and add the SQLite equivalent of `aReleasedCoinAlreadyReclaimedInTheSameRoundKeepsItsNewSpender`.
- [SUGGESTION] packages/rs-platform-wallet-storage/src/sqlite/schema/core_state.rs:190-193: Delete the swept transaction's persisted InstantLock
A swept loser can be InstantSend-locked when the winning transaction is chainlocked: the pinned upstream precedence rules explicitly allow a chainlocked arrival to evict an IS-locked loser. Such a loser may therefore have a row in `core_instant_locks`, but that table has no foreign key or deletion trigger tied to `core_transactions`. Deleting only the transaction leaves stale auxiliary state indefinitely. Delete the matching InstantLock in the same SQLite transaction as the swept transaction.
| spend_stmt.execute(params![ | ||
| wallet_id.as_slice(), | ||
| &key[..], | ||
| !released.contains(&outpoint) | ||
| ])?; |
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🔴 Blocking: Do not release an outpoint a later record already reclaimed
swept_released_outpoints describes wallet state when each sweep event was emitted, but the event adapter can merge that event with a later transaction that spends one of the newly freed coins. SQLite applies every spent_utxos entry first, setting the coin to spent = 1, and then this unconditional assignment sets it back to spent = 0 because the outpoint remains in the merged release set. Unlike the Kotlin backend, SQLite does not retain the identity of the current spender, so the persisted mirror incorrectly exposes a coin consumed by the later transaction as unspent. Before releasing an outpoint, preserve any claim made by a non-swept transaction record in the same changeset, and add the SQLite equivalent of aReleasedCoinAlreadyReclaimedInTheSameRoundKeepsItsNewSpender.
source: ['codex']
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Resolved in b172c0a — Do not release an outpoint a later record already reclaimed no longer present.
Auto-resolved by the review system based on the latest commit diff. If you believe this was closed in error, reopen the thread.
… claim Two defects in the SQLite sweep, both found in review. The release was applied unconditionally. A round can carry both a release and a later transaction that legitimately spends the freed coin — merging folds several events together, and every record is written before sweeps are processed — so the coin could already be claimed again by the time the sweep ran, and setting `spent = 0` handed a consumed coin back to the unspent query. The mobile mirrors settle this by looking at who currently claims the row, but `core_utxos` never records that: `spent_in_txid` stays null on every write path. The changeset carries the answer instead — a record in this round that is not itself being swept and spends a released outpoint is the live claim — so the release now defers to it. This is the SQLite half of the same defect fixed on the Kotlin side by `spendingTxid IS NULL`. Second, a swept transaction's InstantLock row survived it. A chainlocked winner may evict an InstantSend-locked loser, so a swept transaction can own a row in `core_instant_locks`, and nothing ties that table to `core_transactions` — no foreign key, no trigger. Delete it in the same transaction. Both regressions are covered, and both tests were confirmed to fail without their fix.
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Preliminary review — Codex only
The exact head fixes both prior SQLite findings by protecting claims from surviving records and deleting swept transactions' InstantLock rows. However, coalescing multiple ordered sweep events still unions their release sets, allowing an earlier release to override a later sweep that retained the same outpoint as spent; this affects every persistence backend and remains blocking.
Source: reviewer backend gpt-5.6-sol; final verifier backend gpt-5.6-sol. openclaw-agent/cliproxy/gpt-5.6-sol is orchestration-only and not reviewer evidence.
Validated blockers were found in the Codex precheck. Opus is deferred until a fresh Codex revalidation clears the blocker gate.
Review provenance
- Codex reviewers:
gpt-5.6-sol— general (completed) - Verifier:
gpt-5.6-sol— verifier - Sonnet: not run (deferred by blocker gate)
🔴 1 blocking
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These findings are from an automated code review. Verify each finding against the current code and only fix it if needed.
In `packages/rs-platform-wallet/src/changeset/changeset.rs`:
- [BLOCKING] packages/rs-platform-wallet/src/changeset/changeset.rs:410-417: Do not union release decisions across ordered sweeps
A released outpoint describes wallet state at one specific `TransactionsSwept` event; it is not a monotonic property of the whole adapter drain. For example, one sweep can release B, a later unconfirmed wallet-relevant transaction can claim B, and a final wallet-irrelevant transaction can consume B while sweeping that later claimant. If those events are already buffered, this merge retains the first event's release of B while the later claimant appears in both `records` and `swept_transactions`. SQLite therefore excludes that claimant from `claimed_by_survivors`, and the mobile handlers detach all swept claims before applying the same global release set, so all backends persist B as unspent even though the final winner consumed it. Preserve each ordered sweep event's release information, or carry equivalent ordering and attribution so a later retained input overrides an earlier release.
| // The released set folds the same way: a coalesced round frees a coin | ||
| // once however many sweeps named it. | ||
| if !other.swept_released_outpoints.is_empty() { | ||
| let mut seen: std::collections::HashSet<OutPoint> = | ||
| self.swept_released_outpoints.iter().copied().collect(); | ||
| for outpoint in other.swept_released_outpoints { | ||
| if seen.insert(outpoint) { | ||
| self.swept_released_outpoints.push(outpoint); |
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🔴 Blocking: Do not union release decisions across ordered sweeps
A released outpoint describes wallet state at one specific TransactionsSwept event; it is not a monotonic property of the whole adapter drain. For example, one sweep can release B, a later unconfirmed wallet-relevant transaction can claim B, and a final wallet-irrelevant transaction can consume B while sweeping that later claimant. If those events are already buffered, this merge retains the first event's release of B while the later claimant appears in both records and swept_transactions. SQLite therefore excludes that claimant from claimed_by_survivors, and the mobile handlers detach all swept claims before applying the same global release set, so all backends persist B as unspent even though the final winner consumed it. Preserve each ordered sweep event's release information, or carry equivalent ordering and attribution so a later retained input overrides an earlier release.
source: ['codex']
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Resolved in 04a76c4 — Do not union release decisions across ordered sweeps no longer present.
Auto-resolved by the review system based on the latest commit diff. If you believe this was closed in error, reopen the thread.
A release is only true of the wallet the sweep that made it saw — it is not a property of the whole drain. The adapter folds every event buffered in one pass into a single changeset, so two sweeps that disagree were being reconciled by unioning their release sets, and the earlier answer won. The shape that breaks: a sweep frees B, a later transaction spends B, and a final winner consumes B while sweeping that spender. The second sweep frees nothing, precisely because its winner took B. Unioned, B stays in the release set; the spender is in `swept_transactions`, so SQLite excludes it from `claimed_by_survivors` and the mobile handlers detach its claim before applying the same global set. All three backends then persist a coin the chain consumed as spendable. Replace `swept_transactions` + `swept_released_outpoints` with `sweeps: Vec<SweepBatch>`, each carrying its own removals, winner and release set, merged by appending rather than folding. Every backend applies them in sequence, so a later batch corrects the one before it — which is what the wallet itself did. The FFI mirrors the nesting (`SweepBatchFFI`), and JNI now makes one bridge call per batch, so the Kotlin handler's signature is unchanged and its existing hold-then-release gives the ordering for free. Regression coverage on all three backends plus the merge itself, each confirmed to fail against the folded set.
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Inline comments:
In
`@packages/swift-sdk/SwiftTests/SwiftDashSDKTests/SweptTransactionPersistTests.swift`:
- Around line 175-190: Update the FFI batch construction around SweepBatchFFI so
persistWalletChangeset is invoked while each txidStorage and releasedStorage
buffer-pointer closure is active, or replace those transient pointers with
explicitly allocated storage that remains valid through the call; ensure all
entry pointers remain valid for the entire persistence operation.
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Fix all unresolved CodeRabbit comments on this PR:
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Run ID: 14ed651b-3040-414f-a9fb-c2cfe8e5c398
📒 Files selected for processing (9)
packages/kotlin-sdk/sdk/src/test/kotlin/org/dashfoundation/dashsdk/persistence/PlatformWalletPersistenceHandlerTest.ktpackages/rs-platform-wallet-ffi/src/core_wallet_types.rspackages/rs-platform-wallet-storage/src/sqlite/schema/core_state.rspackages/rs-platform-wallet-storage/tests/sqlite_transaction_sweeps.rspackages/rs-platform-wallet/src/changeset/changeset.rspackages/rs-platform-wallet/src/changeset/core_bridge.rspackages/rs-unified-sdk-jni/src/persistence.rspackages/swift-sdk/Sources/SwiftDashSDK/PlatformWallet/PlatformWalletPersistenceHandler.swiftpackages/swift-sdk/SwiftTests/SwiftDashSDKTests/SweptTransactionPersistTests.swift
🚧 Files skipped from review as they are similar to previous changes (5)
- packages/rs-unified-sdk-jni/src/persistence.rs
- packages/rs-platform-wallet/src/changeset/core_bridge.rs
- packages/rs-platform-wallet-storage/src/sqlite/schema/core_state.rs
- packages/kotlin-sdk/sdk/src/test/kotlin/org/dashfoundation/dashsdk/persistence/PlatformWalletPersistenceHandlerTest.kt
- packages/swift-sdk/Sources/SwiftDashSDK/PlatformWallet/PlatformWalletPersistenceHandler.swift
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Preliminary review — Codex only
The ordered sweep batches fix the prior release-set union defect, but record arrivals are still separated from sweeps during merging, allowing a final reinstated transaction to be deleted by an earlier buffered sweep. The new Swift persistence test helper also uses nested array pointers after their guaranteed lifetimes end.
Source: reviewer backend gpt-5.6-sol; final verifier backend gpt-5.6-sol. openclaw-agent/cliproxy/gpt-5.6-sol is orchestration-only and not reviewer evidence.
Validated blockers were found in the Codex precheck. Opus is deferred until a fresh Codex revalidation clears the blocker gate.
Review provenance
- Codex reviewers:
gpt-5.6-sol— general (completed) - Verifier:
gpt-5.6-sol— verifier - Sonnet: not run (deferred by blocker gate)
🔴 1 blocking | 🟡 1 suggestion(s)
🤖 Prompt for all review comments with AI agents
These findings are from an automated code review. Verify each finding against the current code and only fix it if needed.
In `packages/rs-platform-wallet/src/changeset/changeset.rs`:
- [BLOCKING] packages/rs-platform-wallet/src/changeset/changeset.rs:377-381: Preserve record arrivals relative to ordered sweeps
Appending sweep batches preserves their order only relative to other sweeps; transaction records remain in a separate vector, and SQLite, Swift, and Kotlin all apply every record before replaying every sweep. The pinned wallet permits a chainlocked transaction to evict an InstantSend-locked conflict. Therefore, an unconfirmed X can first be swept when IS-locked A arrives, then return chainlocked and sweep A. If those events are drained together, the changeset contains records for A and the final X plus sweeps `[delete X, delete A]`. Applying all records first and then both sweeps deletes both rows, including the terminal X and its outputs, even though the in-memory wallet retained X. Preserve ordering across record and sweep operations, or carry equivalent last-operation information per txid so a record emitted after its earlier sweep survives.
In `packages/swift-sdk/SwiftTests/SwiftDashSDKTests/SweptTransactionPersistTests.swift`:
- [SUGGESTION] packages/swift-sdk/SwiftTests/SwiftDashSDKTests/SweptTransactionPersistTests.swift:178-184: Keep the test FFI buffers alive through persistence
`buf.baseAddress` is stored in `SweepBatchFFI` and used by `persistWalletChangeset` after each `withUnsafeMutableBufferPointer` closure has returned. Keeping the containing arrays in local variables does not extend the pointer lifetime guaranteed by that API, so this test helper can pass dangling pointers to the FFI consumer. Invoke persistence while all required buffer closures are active, using nested lifetime scopes, or allocate explicitly owned buffers and release them after the call.
| txidStorage[i].withUnsafeMutableBufferPointer { buf in | ||
| entry.txids = buf.baseAddress | ||
| entry.txids_count = UInt(buf.count) | ||
| } | ||
| releasedStorage[i].withUnsafeMutableBufferPointer { buf in | ||
| entry.released_outpoints = buf.baseAddress | ||
| entry.released_outpoints_count = UInt(buf.count) |
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🟡 Suggestion: Keep the test FFI buffers alive through persistence
buf.baseAddress is stored in SweepBatchFFI and used by persistWalletChangeset after each withUnsafeMutableBufferPointer closure has returned. Keeping the containing arrays in local variables does not extend the pointer lifetime guaranteed by that API, so this test helper can pass dangling pointers to the FFI consumer. Invoke persistence while all required buffer closures are active, using nested lifetime scopes, or allocate explicitly owned buffers and release them after the call.
source: ['coderabbit']
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Resolved in 0d81ce1 — Keep the test FFI buffers alive through persistence no longer present.
Auto-resolved by the review system based on the latest commit diff. If you believe this was closed in error, reopen the thread.
Ordering the sweep batches fixed them relative to each other, but records still sit in their own vector and every persister writes all of them before replaying any sweep. So a transaction removed by a buffered sweep and then recorded again in the same round was deleted anyway, along with its outputs, while the in-memory wallet had kept it. Reachable through IS-lock precedence, which the pinned wallet permits: an unconfirmed transaction is swept when an IS-locked conflict arrives, then comes back chainlocked and sweeps that conflict in turn. One drain then holds records for both plus removals for both. Merging now drops a reinstated txid from any sweep already buffered — the record is the newer fact — and drops the batch entirely once nothing is left to remove. The batch's release set goes with it: it described a wallet in which that transaction was gone, and leaving those coins spent is the recoverable direction, since the wallet re-delivers a genuinely free one as a UTXO while a coin handed back that the chain consumed cannot be taken away again. Also fixes the Swift test helper, which stored `baseAddress` from `withUnsafeMutableBufferPointer` in the FFI structs and used it after those closures returned — a dangling pointer the FFI consumer then read. The buffers are allocated explicitly and freed after the call.
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Preliminary review — Codex only
The latest commit resolves both prior findings: reinstated transaction records now survive earlier buffered sweeps, and the Swift test keeps its FFI buffers alive through persistence. Two blocking durability gaps remain: partially reinstating a multi-loser sweep discards releases for losers that remain swept, and unresolved winner-consumed inputs lose their only durable claim when the loser is deleted.
Source: reviewer backend gpt-5.6-sol; final verifier backend gpt-5.6-sol. openclaw-agent/cliproxy/gpt-5.6-sol is orchestration-only and not reviewer evidence.
Validated blockers were found in the Codex precheck. Opus is deferred until a fresh Codex revalidation clears the blocker gate.
Review provenance
- Codex reviewers:
gpt-5.6-sol— general (completed) - Verifier:
gpt-5.6-sol— verifier - Sonnet: not run (deferred by blocker gate)
🔴 2 blocking
🤖 Prompt for all review comments with AI agents
These findings are from an automated code review. Verify each finding against the current code and only fix it if needed.
In `packages/rs-platform-wallet/src/changeset/changeset.rs`:
- [BLOCKING] packages/rs-platform-wallet/src/changeset/changeset.rs:291-296: Keep releases belonging to losers that remain swept
A sweep batch can contain multiple losers, while `released_outpoints` is the aggregate release set for all of them. When a later record reinstates only one loser, this code removes that txid but clears releases that still apply to the losers remaining in the batch. For example, winner A can sweep X and Y, where Y also spends C and A does not, causing the batch to release C. If X later returns chainlocked, the batch retains Y but loses C; replaying the remaining sweep then marks C spent even though no final winner consumed it. Preserve the aggregate release set when only some txids are removed. The backends already scope releases to the remaining losers' inputs or protect claims held by surviving records, so releases unrelated to the remaining losers are inert.
In `packages/rs-platform-wallet-storage/src/sqlite/schema/core_state.rs`:
- [BLOCKING] packages/rs-platform-wallet-storage/src/sqlite/schema/core_state.rs:246-256: Persist retained spends when the funding TXO is not present yet
The sweep preserves a winner-consumed input only by updating an existing `core_utxos` row. A wallet-relevant loser can be persisted before one of its funding outputs is materialized; the mobile handlers explicitly support this ordering with pending-input rows, and SQLite can likewise have no row when the record lacks a classified input detail. If an irrelevant final winner then sweeps the loser, the input is intentionally absent from `released_outpoints`, but this update affects zero rows and deleting the loser removes the only durable description of the claim. Swift and Kotlin have the same failure because deleting the loser cascades its pending-input rows. After restart, the upstream observed-spend state is not reconstructed from the persistence seam, so a later funding scan can insert the consumed output as unspent. Before deleting the loser, preserve every unresolved non-released input as a durable claim associated with `superseded_by` or an equivalent tombstone, and cover spend-before-funding followed by sweep, restart, and funding arrival across all three backends.
| for batch in &mut self.sweeps { | ||
| let before = batch.txids.len(); | ||
| batch.txids.retain(|txid| !reinstated.contains(txid)); | ||
| if batch.txids.len() != before { | ||
| batch.released_outpoints.clear(); | ||
| } |
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🔴 Blocking: Keep releases belonging to losers that remain swept
A sweep batch can contain multiple losers, while released_outpoints is the aggregate release set for all of them. When a later record reinstates only one loser, this code removes that txid but clears releases that still apply to the losers remaining in the batch. For example, winner A can sweep X and Y, where Y also spends C and A does not, causing the batch to release C. If X later returns chainlocked, the batch retains Y but loses C; replaying the remaining sweep then marks C spent even though no final winner consumed it. Preserve the aggregate release set when only some txids are removed. The backends already scope releases to the remaining losers' inputs or protect claims held by surviving records, so releases unrelated to the remaining losers are inert.
| for batch in &mut self.sweeps { | |
| let before = batch.txids.len(); | |
| batch.txids.retain(|txid| !reinstated.contains(txid)); | |
| if batch.txids.len() != before { | |
| batch.released_outpoints.clear(); | |
| } | |
| for batch in &mut self.sweeps { | |
| batch.txids.retain(|txid| !reinstated.contains(txid)); | |
| } |
source: ['codex']
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Resolved in 46f74e9 — Keep releases belonging to losers that remain swept no longer present.
Auto-resolved by the review system based on the latest commit diff. If you believe this was closed in error, reopen the thread.
`released_outpoints` is the aggregate for every loser in the batch, so clearing it on reinstatement discarded coins freed by the losers that are still going: a winner sweeping X and Y, where only Y also spends C, releases C — and X returning chainlocked left the batch keeping Y but losing C, so replaying it marked C spent though no final winner took it. Keep the set. Entries belonging to the reinstated transaction are inert on every backend: each scopes its release to the remaining losers' own inputs, or withholds any outpoint a surviving record claims — and the reinstating record is exactly such a claim.
A wallet-relevant loser can be persisted before one of its own funding outputs is materialized: the mobile handlers stage that spend as a pending-input row, and SQLite simply has no `core_utxos` row for the outpoint yet. When a later, unresolved-elsewhere winner sweeps that loser and does not release the input, every backend tried to update a row that did not exist — a no-op — then deleted the loser, which was the only place the claim lived. A pending-input row is cascade-owned by the transaction that created it, so it went with the loser too. Once the funding transaction was finally observed, even after a restart, its ordinary UTXO upsert had nothing telling it the coin was already spoken for, and inserted it back as spendable. Give the claim somewhere durable to live before deleting the loser. SQLite's `core_utxos.spent_in_txid` column already existed for exactly this and was never populated on any write path; `apply_sweep` now writes it for a held input with no existing row (a placeholder row the real funding upsert fills in later) and for one that does exist, and `execute_upsert_utxo`'s ON CONFLICT clause refuses to clear `spent` while it's set. Swift and Kotlin get the mobile-appropriate version: a held pending input is detached from its doomed loser (so the cascade-delete no longer reaches it) and repointed at the winner, flagged so the funding TXO's own later upsert forces `isSpent` unconditionally and stamps a new `supersededByTxid` column rather than waiting on the winner's own row to resolve. That column is deliberately not the same "no spender on record" state a plain held coin gets — clearing `isSpent` when the wallet re-delivers a coin as a UTXO stays gated on no spender *and* no superseding txid, so the existing recovery path for an unresolved sweep is untouched. Regression coverage on all three backends: seed the pending spend, sweep it holding the input, drop and reopen the store/persister, then let the funding UTXO arrive — the coin must not become spendable. Each was confirmed to fail without its half of the fix. Kotlin's schema move (`txos.supersededByTxid`, `pending_inputs.isSweptTombstone`) ships as Room migration v10→v11 with exported-schema and migration-path coverage.
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Preliminary review — Codex only
Two blocking availability issues remain: the pinned rust-dashcore revision repeatedly scans retained history to discover conflicted descendants, and SQLite creates permanent attacker-selected placeholders for unowned sweep inputs. The three other prior findings are fixed; the new DashPay persistence capability also needs to be included in stable diagnostics and the bit-assignment test.
Source: Codex reviewer backend gpt-5.6-sol (general, security-auditor, rust-quality, and ffi-engineer); final verifier backend gpt-5.6-sol. openclaw-agent/cliproxy/gpt-5.6-sol is orchestration-only and not reviewer evidence.
Validated blockers were found in the Codex precheck. Opus is deferred until a fresh Codex revalidation clears the blocker gate.
Review provenance
- Codex reviewers:
gpt-5.6-sol— general (completed),gpt-5.6-sol— security-auditor (completed),gpt-5.6-sol— rust-quality (completed),gpt-5.6-sol— ffi-engineer (completed) - Verifier:
gpt-5.6-sol— verifier - Sonnet: not run (deferred by blocker gate)
🔴 2 blocking | 🟡 1 suggestion(s)
1 carried-forward finding(s) already raised on this PR; not re-posting as new inline comments.
🤖 Prompt for all review comments with AI agents
These findings are from an automated code review. Verify each finding against the current code and only fix it if needed.
In `packages/rs-platform-wallet-storage/src/sqlite/schema/core_state.rs`:
- [BLOCKING] packages/rs-platform-wallet-storage/src/sqlite/schema/core_state.rs:389-394: Do not persist placeholders for unowned sweep inputs
When the update finds no existing UTXO, this branch inserts a durable spent placeholder for every non-released loser input without proving that the wallet owns the outpoint. An incoming transaction can be wallet-relevant solely because one output pays the wallet while all inputs belong to the sender; if a finalized replacement consumes those inputs, they are intentionally absent from `released_outpoints`, so each attacker-selected input creates a wallet-scoped zero-value row. Those foreign outputs will never arrive as wallet UTXOs and no later release is expected to remove them, allowing repeated conflicting incoming payments to grow the database permanently and lengthen synchronous persistence transactions. The adjacent `KNOWN EXPOSURE` comment confirms that the required ownership signal is unavailable in the current payload; carry an authoritative per-wallet held-outpoint set from upstream and restrict absent-row placeholders to that set.
In `packages/rs-platform-wallet/src/changeset/persistence_capabilities.rs`:
- [SUGGESTION] packages/rs-platform-wallet/src/changeset/persistence_capabilities.rs:168-171: Include the DashPay capability in stable diagnostics
`DASHPAY_PAYMENTS` is defined as the known bit `1 << 11`, but `PersistenceCapabilities::names()` stops at `CORE_SWEEP_REMOVAL`. As a result, `PersistenceCapabilities::DASHPAY_PAYMENTS.names()` returns an empty vector even though this method supplies stable names for known capabilities, so diagnostics omit the capability that controls the new payment-overlay path. Add the bit to `KNOWN` and extend `v1_bit_values_are_stable` with an assertion that its value is `0x800`.
In `Cargo.toml`:
- [BLOCKING] Cargo.toml:55-62: Walk conflicted descendants without repeatedly scanning wallet history
(existing thread: https://github.com/dashpay/platform/pull/4406#discussion_r3809204293)
The pinned `75f318bdc6397ba483fc9a764c61fa6bc5cd5e36` revision still computes the descendant closure in `key-wallet/src/managed_account/managed_core_funds_account.rs:620-644` by scanning every retained transaction, collecting descendants reachable from the current `losers` set, and extending `losers` only after the full scan. A depth-D chain of wallet-relevant unconfirmed transactions followed by a finalized replacement for the root therefore takes approximately D scans of H retained records—O(D×H), quadratic when the chain dominates history. This peer-influenced work runs synchronously during mutable wallet processing and before the sweep reaches persistence, so an interrupted synchronization can repeat it after restart. Build a parent-to-children index once, traverse the descendants with a queue, and repin every rust-dashcore dependency and Cargo.lock to the corrected revision.
… table The bit gates the payment-overlay path but was never added to `KNOWN`, so `names()` returned nothing for it. A host debugging why its overlay rows never landed would see every other capability listed and no trace of the one that withheld them — the bit was invisible in exactly the situation it exists to explain. The guard is the general form rather than one more assertion: every declarable bit must resolve to exactly one name, so the next capability cannot repeat this. It fails against the missing entry.
|
Both remaining blockers are known and neither is waiting on code in this PR. Posting the status at top level because the inline threads keep crossing review runs. Descendant-closure walk ( Agreed and already fixed upstream. It carries a non-timing regression pin — a test-only visit counter with a bound of 3× records — which against the old loop reports 5,000,000 visits versus a bound of 7,500 on a 2000-deep chain. #969 is open against Foreign-input placeholders ( Deliberate, and the remedy you name is the one we want — it just cannot be built from any signal that exists today, which is why it is filed rather than implemented. The finding asks for an authoritative per-wallet held-outpoint set carried from upstream. Checking what upstream could actually emit at the sweep site: So the set would have to be built from an ownership signal that does not exist yet, and gating on anything available today drops that hold: the coin would read spendable from the sweep until the winner confirms in a block. That narrows behaviour currently pinned by Filed as dashpay/rust-dashcore#968 with the analysis, the additive shape, and the trade-off stated. What ships here is funds-safe: zero-value Also fixed from this pass The At |
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Preliminary review — Codex only
Two in-scope blocking availability issues remain: the dependency bump pins a quadratic conflicted-descendant traversal, and the new SQLite sweep path creates permanent attacker-selected rows for foreign inputs. The DashPay capability diagnostics omission is fixed; the JNI projection also has one non-blocking avoidable allocation pattern.
Source: reviewer backends gpt-5.6-sol (general, security-auditor, rust-quality, ffi-engineer); final verifier backend gpt-5.6-sol. openclaw-agent/cliproxy/gpt-5.6-sol is orchestration-only and not reviewer evidence.
Validated blockers were found in the Codex precheck. Opus is deferred until a fresh Codex revalidation clears the blocker gate.
Review provenance
- Codex reviewers:
gpt-5.6-sol— general (completed),gpt-5.6-sol— security-auditor (completed),gpt-5.6-sol— rust-quality (completed),gpt-5.6-sol— ffi-engineer (completed) - Verifier:
gpt-5.6-sol— verifier - Sonnet: not run (deferred by blocker gate)
🔴 2 blocking | 🟡 1 suggestion(s)
2 carried-forward finding(s) already raised on this PR; not re-posting as new inline comments.
🤖 Prompt for all review comments with AI agents
These findings are from an automated code review. Verify each finding against the current code and only fix it if needed.
In `packages/rs-unified-sdk-jni/src/persistence.rs`:
- [SUGGESTION] packages/rs-unified-sdk-jni/src/persistence.rs:695-702: Allocate the sweep winner byte array once per batch
`SweepBatchFFI` supplies one `superseded_by` value for the entire batch, but the JNI projection allocates and copies an identical 32-byte Java array for every loser. The loser count is network-influenced and this code runs synchronously inside the atomic persistence callback. Allocate the winner array once in the batch local frame and reuse that reference in every `winners` slot; the in-tree Kotlin handler only reads these values.
In `Cargo.toml`:
- [BLOCKING] Cargo.toml:55-62: Walk conflicted descendants without repeatedly scanning wallet history
(existing thread: https://github.com/dashpay/platform/pull/4406#discussion_r3809204293)
The workspace still pins rust-dashcore revision `75f318bdc6397ba483fc9a764c61fa6bc5cd5e36`. At that exact revision, `drop_conflicted_transactions` in `key-wallet/src/managed_account/managed_core_funds_account.rs:620-644` computes the descendant closure by rescanning every retained transaction, adding one newly reachable generation to `losers`, and repeating. A peer-provided chain of D wallet-relevant unconfirmed transactions followed by a finalized replacement for the root therefore causes about D scans of H records—O(D×H), quadratic when the chain dominates history—while wallet state is being mutated and before the sweep reaches persistence, so interruption can recreate the work after restart. Upstream PR dashpay/rust-dashcore#969 replaces this loop with a parent-to-children index and queue traversal and adds a deterministic linear-visit regression; repin every rust-dashcore dependency and Cargo.lock to that corrected revision.
In `packages/rs-platform-wallet-storage/src/sqlite/schema/core_state.rs`:
- [BLOCKING] packages/rs-platform-wallet-storage/src/sqlite/schema/core_state.rs:389-394: Do not persist placeholders for unowned sweep inputs
(existing thread: https://github.com/dashpay/platform/pull/4406#discussion_r3812280612)
When `spend_stmt` finds no row, this new branch inserts a durable spent placeholder for every non-released loser input without proving that the wallet owns the outpoint. An incoming transaction can be wallet-relevant only because one output pays the wallet while all inputs belong to the sender; if a finalized replacement consumes those inputs, they are intentionally absent from `released_outpoints`, so each attacker-selected foreign input creates a wallet-scoped zero-value row. Those funding outputs will never arrive as wallet UTXOs and no later release is expected to remove the rows, allowing repeated conflicting incoming payments to grow `core_utxos` permanently and lengthen synchronous persistence transactions. The adjacent `KNOWN EXPOSURE` comment confirms that the current payload lacks the required ownership signal; carry an authoritative per-wallet held-outpoint set from upstream and restrict absent-row placeholders to that set.
| let winners = env.new_object_array(txids.len() as i32, &byte_array_cls, &empty)?; | ||
| for (i, txid) in txids.iter().enumerate() { | ||
| env.with_local_frame(8, |env| { | ||
| let t = env.byte_array_from_slice(txid)?; | ||
| env.set_object_array_element(&txids_arr, i as i32, &t)?; | ||
| let w = env.byte_array_from_slice(&batch.superseded_by)?; | ||
| env.set_object_array_element(&winners, i as i32, &w) | ||
| })?; |
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🟡 Suggestion: Allocate the sweep winner byte array once per batch
SweepBatchFFI supplies one superseded_by value for the entire batch, but the JNI projection allocates and copies an identical 32-byte Java array for every loser. The loser count is network-influenced and this code runs synchronously inside the atomic persistence callback. Allocate the winner array once in the batch local frame and reuse that reference in every winners slot; the in-tree Kotlin handler only reads these values.
| let winners = env.new_object_array(txids.len() as i32, &byte_array_cls, &empty)?; | |
| for (i, txid) in txids.iter().enumerate() { | |
| env.with_local_frame(8, |env| { | |
| let t = env.byte_array_from_slice(txid)?; | |
| env.set_object_array_element(&txids_arr, i as i32, &t)?; | |
| let w = env.byte_array_from_slice(&batch.superseded_by)?; | |
| env.set_object_array_element(&winners, i as i32, &w) | |
| })?; | |
| let winner = env.byte_array_from_slice(&batch.superseded_by)?; | |
| for (i, txid) in txids.iter().enumerate() { | |
| env.with_local_frame(8, |env| { | |
| let t = env.byte_array_from_slice(txid)?; | |
| env.set_object_array_element(&txids_arr, i as i32, &t)?; | |
| env.set_object_array_element(&winners, i as i32, &winner) | |
| })?; | |
| } |
source: ['codex']
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Resolved in 59d5023 — Allocate the sweep winner byte array once per batch no longer present.
Auto-resolved by the review system based on the latest commit diff. If you believe this was closed in error, reopen the thread.
dashpay/rust-dashcore#969 merged as 5877d15f, so the pin moves off the #966 merge commit onto it. The revision replaces the conflict sweep's per-generation rescan of the whole retained history with a parent-to-children index built once and a queue traversal that visits each record exactly once — O(records + edges) instead of O(depth × history), which a peer could drive with a deep chain of unconfirmed wallet-relevant transactions followed by a finalized replacement for the root input. Skip semantics are unchanged: confirmed and InstantSend-locked records are still never followed, the winner is never a candidate, and an IS-locked initial loser still has its descendants walked. All eight workspace pins and Cargo.lock move together; no API changed.
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Preliminary review — Codex only
The corrected rust-dashcore pin resolves the prior quadratic conflicted-descendant traversal at the exact head. One blocking issue remains because the new SQLite sweep path can permanently store attacker-selected foreign-input placeholders, and the JNI projection still performs an avoidable winner-array allocation for every loser.
Source: reviewer backends gpt-5.6-sol (general, security-auditor, rust-quality, ffi-engineer); final verifier backend gpt-5.6-sol. openclaw-agent/cliproxy/gpt-5.6-sol is orchestration-only and not reviewer evidence.
Validated blockers were found in the Codex precheck. Opus is deferred until a fresh Codex revalidation clears the blocker gate.
Review provenance
- Codex reviewers:
gpt-5.6-sol— general (completed),gpt-5.6-sol— security-auditor (completed),gpt-5.6-sol— rust-quality (completed),gpt-5.6-sol— ffi-engineer (completed) - Verifier:
gpt-5.6-sol— verifier - Sonnet: not run (deferred by blocker gate)
🔴 1 blocking
2 carried-forward finding(s) already raised on this PR; not re-posting as new inline comments.
🤖 Prompt for all review comments with AI agents
These findings are from an automated code review. Verify each finding against the current code and only fix it if needed.
In `packages/rs-platform-wallet-storage/src/sqlite/schema/core_state.rs`:
- [BLOCKING] packages/rs-platform-wallet-storage/src/sqlite/schema/core_state.rs:389-394: Do not persist placeholders for unowned sweep inputs
(existing thread: https://github.com/dashpay/platform/pull/4406#discussion_r3812280612)
When `spend_stmt` finds no existing UTXO, this branch inserts a durable spent placeholder for every non-released loser input without establishing that the wallet owns the outpoint. A transaction can be wallet-relevant solely because one output pays the wallet while all inputs belong to the sender; when a finalized replacement consumes those inputs, they are intentionally absent from `released_outpoints`, so every attacker-selected foreign input creates a wallet-scoped zero-value row. Those funding outputs will never arrive as this wallet's UTXOs, and no later release is expected to remove the rows, allowing repeated conflicting incoming payments to grow `core_utxos` permanently and lengthen synchronous persistence transactions. The `KNOWN EXPOSURE` comment at lines 255-269 confirms both the permanent-row behavior and the absence of an ownership signal. Carry an authoritative per-wallet held-outpoint set from upstream and restrict absent-row placeholders to that set.
In `packages/rs-unified-sdk-jni/src/persistence.rs`:
- [SUGGESTION] packages/rs-unified-sdk-jni/src/persistence.rs:696-702: Allocate the sweep winner byte array once per batch
(existing thread: https://github.com/dashpay/platform/pull/4406#discussion_r3812592062)
`SweepBatchFFI` supplies one `superseded_by` value for the whole batch, but this loop allocates and copies an identical 32-byte Java array for every loser. The loser count is network-influenced, and the allocations occur synchronously inside the atomic persistence callback. Allocate the winner array once in the batch-local frame and reuse its reference in every `winners` slot; the Kotlin handler only reads these values.
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Preliminary review — Codex only
The ordered sweep transport and cross-platform persistence work are substantially hardened, but two in-scope durability issues remain: SQLite can accumulate attacker-selected placeholders for foreign inputs, and payment overlays can be staged without an atomic persistence capability. The JNI projection also retains an avoidable allocation per swept loser.
Source: reviewers gpt-5.6-sol (general, security-auditor, rust-quality, and ffi-engineer); final verifier gpt-5.6-sol. openclaw-agent/cliproxy/gpt-5.6-sol is orchestration-only and not reviewer evidence.
Validated blockers were found in the Codex precheck. Opus is deferred until a fresh Codex revalidation clears the blocker gate.
Review provenance
- Codex reviewers:
gpt-5.6-sol— general (completed),gpt-5.6-sol— security-auditor (completed),gpt-5.6-sol— rust-quality (completed),gpt-5.6-sol— ffi-engineer (completed) - Verifier:
gpt-5.6-sol— verifier - Sonnet: not run (deferred by blocker gate)
🔴 2 blocking
2 carried-forward finding(s) already raised on this PR; not re-posting as new inline comments.
🤖 Prompt for all review comments with AI agents
These findings are from an automated code review. Verify each finding against the current code and only fix it if needed.
In `packages/rs-platform-wallet/src/changeset/core_bridge.rs`:
- [BLOCKING] packages/rs-platform-wallet/src/changeset/core_bridge.rs:320-322: Require atomic changesets before staging payment overlays
This gate treats `DASHPAY_PAYMENTS` alone as sufficient to couple sweep failures and reinstatement confirmations to the Core record's store round. That capability currently proves only that the payment callback is wired and declared: `FFIPersister::callback_capabilities` advertises it without requiring begin/end callbacks or `ATOMIC_CHANGESETS`, as the positive case in `dashpay_payments_requires_the_slot_and_the_declaration` demonstrates. For a chainlocked reinstatement round without a sweep, such a host can commit the Core record and watermark in `on_persist_wallet_changeset_fn` and then terminate or fail before `on_persist_dashpay_payments_fn`, leaving the one-shot reinstatement durably recorded while its payment remains `Failed`. Require both `DASHPAY_PAYMENTS` and `ATOMIC_CHANGESETS` before staging these round-coupled overlays.
In `packages/rs-platform-wallet-storage/src/sqlite/schema/core_state.rs`:
- [BLOCKING] packages/rs-platform-wallet-storage/src/sqlite/schema/core_state.rs:389-394: Do not persist placeholders for unowned sweep inputs
(existing thread: https://github.com/dashpay/platform/pull/4406#discussion_r3812280612)
When `spend_stmt` finds no existing UTXO, this branch inserts a durable spent placeholder for every non-released loser input without establishing that the wallet owns the outpoint. A transaction can be wallet-relevant solely because one output pays the wallet while all inputs belong to the sender; when a finalized replacement consumes those inputs, they are intentionally absent from `released_outpoints`, so every attacker-selected foreign input creates a wallet-scoped zero-value row. Those funding outputs will never arrive as this wallet's UTXOs, and no later release is expected to remove the rows, allowing repeated conflicting incoming payments to grow `core_utxos` permanently and lengthen synchronous persistence transactions. The `KNOWN EXPOSURE` comment at lines 255-269 explicitly confirms the permanent-row behavior and the absence of an ownership signal. Carry an authoritative per-wallet held-outpoint set from upstream and restrict absent-row placeholders to that set.
In `packages/rs-unified-sdk-jni/src/persistence.rs`:
- [SUGGESTION] packages/rs-unified-sdk-jni/src/persistence.rs:696-702: Allocate the sweep winner byte array once per batch
(existing thread: https://github.com/dashpay/platform/pull/4406#discussion_r3812592062)
`SweepBatchFFI` supplies one `superseded_by` value for the whole batch, but this loop allocates and copies an identical 32-byte Java array for every loser. The loser count is network-influenced, and these allocations occur synchronously inside the atomic persistence callback. Create the winner array once in the batch-local frame and reuse its reference in every `winners` slot; the Kotlin handler only reads these arrays.
| let payments_attested = persister | ||
| .persistence_capabilities() | ||
| .contains(PersistenceCapabilities::DASHPAY_PAYMENTS); |
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🔴 Blocking: Require atomic changesets before staging payment overlays
This gate treats DASHPAY_PAYMENTS alone as sufficient to couple sweep failures and reinstatement confirmations to the Core record's store round. That capability currently proves only that the payment callback is wired and declared: FFIPersister::callback_capabilities advertises it without requiring begin/end callbacks or ATOMIC_CHANGESETS, as the positive case in dashpay_payments_requires_the_slot_and_the_declaration demonstrates. For a chainlocked reinstatement round without a sweep, such a host can commit the Core record and watermark in on_persist_wallet_changeset_fn and then terminate or fail before on_persist_dashpay_payments_fn, leaving the one-shot reinstatement durably recorded while its payment remains Failed. Require both DASHPAY_PAYMENTS and ATOMIC_CHANGESETS before staging these round-coupled overlays.
| let payments_attested = persister | |
| .persistence_capabilities() | |
| .contains(PersistenceCapabilities::DASHPAY_PAYMENTS); | |
| let required_payment_capabilities = PersistenceCapabilities::DASHPAY_PAYMENTS | |
| .union(PersistenceCapabilities::ATOMIC_CHANGESETS); | |
| let payments_attested = persister | |
| .persistence_capabilities() | |
| .contains(required_payment_capabilities); |
source: ['codex']
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Resolved in 80ec1cb — Require atomic changesets before staging payment overlays no longer present.
Auto-resolved by the review system based on the latest commit diff. If you believe this was closed in error, reopen the thread.
… flips The wallet-event adapter staged sweep-failed flips and one-shot reinstatement confirmations onto the triggering record's store round whenever the persister attested DASHPAY_PAYMENTS. That bit only proves the payments callback is wired and declared: on a host whose callbacks commit independently, the Core record and watermark can become durable while the process stops before the payments write — and a chainlocked reinstatement never re-emits, leaving the reinstatement durably recorded beside a payment durably Failed. Gate the staging on the new ROUND_COUPLED_PAYMENT_FLIPS composite (DASHPAY_PAYMENTS | ATOMIC_CHANGESETS), following the existing operation-composite shape (INVITATION_CREATION and friends) rather than folding atomicity into the bit itself: the bit's contract is per-callback durability, which a non-atomic host truthfully provides, and on the FFI surface the composite's atomic half is already structurally enforced — ATOMIC_CHANGESETS is only attested when the begin/end pair is wired AND declared. A host failing the stricter gate degrades exactly like a payments-blind one: the in-memory flip still happens with nothing round-coupled, which is funds-safe since payment entries are display metadata and the funds-critical half still gates on CORE_SWEEP_REMOVAL. SQLite and the Swift handler already attest both bits; Android's payments slot is unwired either way.
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Preliminary review — Codex only
The atomic payment-overlay defect is fixed at the exact head, and the ordered sweep transport is otherwise consistent across the reviewed persistence boundaries. One blocking SQLite availability issue remains: swept incoming payments can create permanent wallet-scoped placeholders for arbitrary foreign inputs. Two non-blocking issues also remain in the balance-event handler and JNI sweep projection.
Source: Codex reviewers (general, security-auditor, rust-quality, ffi-engineer): gpt-5.6-sol; final verifier: gpt-5.6-sol. openclaw-agent/cliproxy/gpt-5.6-sol is orchestration-only and not reviewer evidence.
Validated blockers were found in the Codex precheck. Opus is deferred until a fresh Codex revalidation clears the blocker gate.
Review provenance
- Codex reviewers:
gpt-5.6-sol— general (completed),gpt-5.6-sol— security-auditor (completed),gpt-5.6-sol— rust-quality (completed),gpt-5.6-sol— ffi-engineer (completed) - Verifier:
gpt-5.6-sol— verifier - Sonnet: not run (deferred by blocker gate)
🔴 1 blocking | 🟡 1 suggestion(s)
1 additional finding(s) omitted (not in diff).
2 carried-forward finding(s) already raised on this PR; not re-posting as new inline comments.
🤖 Prompt for all review comments with AI agents
These findings are from an automated code review. Verify each finding against the current code and only fix it if needed.
In `packages/rs-platform-wallet/src/wallet/core/balance_handler.rs`:
- [SUGGESTION] packages/rs-platform-wallet/src/wallet/core/balance_handler.rs:74-80: Do not discard a contended sweep balance snapshot
`TransactionsSwept` can be the only event carrying the corrected lower balance, particularly when an irrelevant final winner consumes a wallet input and therefore emits no later wallet-relevant record. If a wallet insertion, removal, or load operation briefly holds the public wallets-map write lock, `try_read()` permanently drops that snapshot. The event bus does not retry or coalesce balance updates, so the lock-free `PlatformWallet` balance can continue displaying funds that the wallet has removed until some unrelated balance-bearing event happens to arrive. Use a lookup mechanism that cannot lose the latest snapshot, such as a lock-free wallet map or an ordered retry/coalescing path.
In `packages/rs-platform-wallet-storage/src/sqlite/schema/core_state.rs`:
- [BLOCKING] packages/rs-platform-wallet-storage/src/sqlite/schema/core_state.rs:389-394: Do not persist placeholders for unowned sweep inputs
(existing thread: https://github.com/dashpay/platform/pull/4406#discussion_r3812280612)
When `spend_stmt` finds no existing UTXO, this branch inserts a durable spent placeholder for every non-released loser input without establishing that the wallet owns the outpoint. A transaction can be wallet-relevant solely because one output pays the wallet while all inputs belong to the sender; if a finalized replacement consumes those inputs, they are intentionally absent from `released_outpoints`, so every attacker-selected foreign input creates a wallet-scoped zero-value row. Those funding outputs will never arrive as this wallet's UTXOs, and no later release or cleanup path removes the rows. Repeating this with fresh fan-in transactions permanently grows `core_utxos` and lengthens the synchronous SQLite persistence transaction. The `KNOWN EXPOSURE` comment at lines 255-269 independently confirms both the permanent-row behavior and the missing ownership signal. Carry an authoritative per-wallet held-outpoint set from upstream and create absent-row tombstones only for outpoints in that set.
In `packages/rs-unified-sdk-jni/src/persistence.rs`:
- [SUGGESTION] packages/rs-unified-sdk-jni/src/persistence.rs:696-702: Allocate the sweep winner byte array once per batch
(existing thread: https://github.com/dashpay/platform/pull/4406#discussion_r3812592062)
`SweepBatchFFI::superseded_by` is invariant for the entire batch, but this loop allocates and copies the same 32-byte Java array once per loser. The loser count is network-influenced, and this projection runs synchronously inside the atomic persistence callback. The surrounding batch-local JNI frame can safely own one shared array because the Kotlin consumer only reads the values.
…eep tombstones The held-but-absent placeholder apply_sweep writes for a swept incoming payment's foreign inputs was permanent: no funding upsert ever overwrites it and no release ever names it, so anyone repeatedly double-spending payments at a wallet could grow core_utxos without limit (the KNOWN EXPOSURE block, #4406). Creation cannot be gated — nothing on the record or at the upstream sweep site can prove an input foreign (dashpay/rust-dashcore#968: the proposed attested-ours set is empty by construction) — so bound the row's lifetime instead, mirroring key-wallet's prune_finalized_observed_spends doctrine for the same shape: - stamp each tombstone with the round's best-known processed height (core_utxos.held_since_height, V006), re-stamping on chained-sweep re-point, clearing on materialisation; - persist the chainlock height the changeset already carried and the store previously dropped (core_sync_state.chainlock_height, monotonic max); - after any height-advancing round, collect never-materialised held rows (height IS NULL, spent = 1) once min(chainlock, synced) clears their stamp by a 2-block margin — the InstantSend-path winner customarily mines one block after the stamp, and beyond the margin BIP158 filters matching input prevout scripts guarantee any delivery path that ever classifies the funding output also delivers the winner's spend. Like upstream, a no-op until a chainlock has been persisted. Unstamped legacy rows are back-filled with the current height first, so they wait a full margin from first sight. Also stop releasing a never-materialised claim in place: the zero-value spent = 0 leftover read as a phantom spendable coin through list_unspent_utxos. A released unmaterialised row is deleted outright — the funding upsert recreates the real row if the coin ever classifies — and the collector sweeps up pre-existing leftovers.
The pending_inputs row onWalletChangesetTransactionsSwept repurposes as a durable claim (isSweptTombstone) never drains when its outpoint is a foreign input of a swept incoming payment — no funding TXO ever arrives — so it was permanent junk an attacker could grow one row per input by repeatedly double-spending payments at the wallet: the Room half of the same exposure the SQLite store's core_utxos placeholder carried (#4406). Ownership cannot be proven at creation (dashpay/rust-dashcore#968), so bound the row's lifetime instead, mirroring the SQLite store's collect_finalized_tombstones: - v13 adds pending_inputs.heldSinceHeight (nullable, additive), stamped with the wallet's synced height when a sweep flags a tombstone and re-stamped when a chained sweep re-points it; - onWalletChangesetHeader collects tombstones once the synced height clears their stamp by a 2-block margin, back-filling unstamped (pre-migration) rows with the current height first, and only after a chainlock has been applied — the chainlock's own height is bincode-opaque on this side of the FFI, so the boundary is the synced height, the filter-coverage half of the upstream doctrine. A genuine claim is untouched: its funding TXO's arrival drains the hold onto the TxoEntity and deletes the pending rows, leaving nothing for the collector to see.
…ollection margin Advancing the boundary to 105 let the collector reap the stamp-100 tombstone before the second sweep ran, so the test was exercising the insert path's re-creation rather than the UPDATE's re-stamp CASE. One block of progress keeps the row alive through the chained sweep and pins the genuine re-point + re-stamp behavior.
The PersistentPendingInput row applySweptTransaction repurposes as a durable claim (isSweptTombstone) never drains when its outpoint is a foreign input of a swept incoming payment — no funding TXO ever arrives — so it was permanent junk an attacker could grow one row per input by repeatedly double-spending payments at the wallet: the SwiftData half of the same exposure the SQLite store's core_utxos placeholder carried (#4406). Ownership cannot be proven at creation (dashpay/rust-dashcore#968), so bound the row's lifetime instead, mirroring the SQLite store's collect_finalized_tombstones: - heldSinceHeight (optional, lightweight-migrated) stamps a tombstone with the wallet's synced height when a sweep flags it and re-stamps it when a chained sweep re-points it; - persistWalletChangeset collects tombstones once the synced height clears their stamp by a 2-block margin, back-filling unstamped (pre-property) rows with the current height first, and only after a chainlock has been applied — the chainlock's own height is bincode-opaque on this side of the FFI, so the boundary is the synced height, the filter-coverage half of the upstream doctrine. A genuine claim is untouched: its funding TXO's arrival drains the hold onto the PersistentTxo and deletes the pending rows, leaving nothing for the collector to see.
…into its own PR Remove the bit-11 behavioral block so the funds-critical sweep core — pin bump, producer arm, watermark gate, SQLite/Swift/Kotlin persisters — can converge on its own: SweptPaymentFlips and the evidence-classed resolver in payments.rs, the adapter's flip staging with its same-fold retraction, rollback ledger, cross-drain re-validation (commit_batch_with_payment_revalidation) and WalletBatch::payments_overlay, and the ROUND_COUPLED_PAYMENT_FLIPS composite. The block returns unchanged as a stacked follow-up PR that carries its review findings together with their regression tests. What stays is the seam the extracted PR plugs back into: capability bits 10 and 11 with their FFI derivations and gate tests, the commit_batch/commit_wallet factoring, and the payment_handler no-op arms with their pinning test — a sweep still must not drive the payment hooks, whichever PR the flip lands in. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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Preliminary review — Codex only
The prior permanent-growth mechanism is now bounded, but the replacement cleanup can delete a genuine unresolved spend hold based only on elapsed height, allowing an InstantSend-consumed output to reappear after restart. One blocking persistence defect remains, along with the carried-forward balance-update and JNI allocation suggestions.
Source: reviewer backends gpt-5.6-sol (general, security-auditor, rust-quality, ffi-engineer); final verifier backend gpt-5.6-sol. openclaw-agent/cliproxy/gpt-5.6-sol is orchestration-only and not reviewer evidence.
Validated blockers were found in the Codex precheck. Opus is deferred until a fresh Codex revalidation clears the blocker gate.
Review provenance
- Codex reviewers:
gpt-5.6-sol— general (completed),gpt-5.6-sol— security-auditor (completed),gpt-5.6-sol— rust-quality (completed),gpt-5.6-sol— ffi-engineer (completed) - Verifier:
gpt-5.6-sol— verifier - Sonnet: not run (deferred by blocker gate)
🔴 1 blocking | 🟡 1 suggestion(s)
1 additional finding(s) omitted (not in diff).
1 carried-forward finding(s) already raised on this PR; not re-posting as new inline comments.
🤖 Prompt for all review comments with AI agents
These findings are from an automated code review. Verify each finding against the current code and only fix it if needed.
In `packages/rs-platform-wallet-storage/src/sqlite/schema/core_state.rs`:
- [BLOCKING] packages/rs-platform-wallet-storage/src/sqlite/schema/core_state.rs:691-700: Do not expire unresolved holds by sweep observation age
`held_since_height` records when the sweep was observed, not the block height where its winner was mined. The pinned wallet emits `TransactionsSwept` from the mempool path when an InstantSend-locked winner arrives, and InstantSend finality does not require that transaction to be mined within the next two blocks. Unrelated blocks and chainlocks can therefore advance `min(chainlock_height, synced_height)` past this cutoff while the winner remains unmined, deleting the only durable hold for a funding output that has not materialized yet. After a restart, a later funding-output delivery is inserted as unspent because neither the tombstone nor an irrelevant winner record remains to preserve the spend. The upstream `prune_finalized_observed_spends` logic is not analogous: it stores the actual height of an on-chain spend and prunes only when that specific height is inside the finality boundary. Swift and Kotlin apply the same observation-age rule and are weaker still: they only require that some chainlock bytes exist, then use `syncedHeight` without checking the current numeric chainlock height. Preserve the claim until persistence has evidence tying this winner to a finalized block height, and add a restart regression where the InstantSend winner remains unmined while the funding output arrives after the current collection margin.
In `packages/rs-platform-wallet/src/wallet/core/balance_handler.rs`:
- [SUGGESTION] packages/rs-platform-wallet/src/wallet/core/balance_handler.rs:75-80: Do not discard a contended sweep balance snapshot
`TransactionsSwept` can be the only event carrying the corrected lower balance, particularly when an irrelevant final winner consumes a wallet input and emits no later wallet-relevant record. If a wallet insertion, removal, or load operation briefly holds the wallets-map write lock, `try_read()` permanently drops that snapshot. The event bus neither retries nor coalesces updates, so the public lock-free balance can continue displaying funds the underlying wallet removed until an unrelated balance-bearing event arrives. Use an ordered retry/coalescing path or another wallet lookup mechanism that cannot lose the latest snapshot.
In `packages/rs-unified-sdk-jni/src/persistence.rs`:
- [SUGGESTION] packages/rs-unified-sdk-jni/src/persistence.rs:696-702: Allocate the sweep winner byte array once per batch
(existing thread: https://github.com/dashpay/platform/pull/4406#discussion_r3812592062)
`SweepBatchFFI::superseded_by` is invariant across the batch, but this loop allocates and copies the same 32-byte Java array once per loser. The loser count is network-influenced, and this projection runs synchronously inside the atomic persistence callback. The surrounding batch-local JNI frame can own one shared read-only array and reuse it in every `winners` slot.
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Preliminary review — Codex only
The ordered, capability-negotiated sweep persistence seam remains substantially hardened, but its age-based tombstone collector can still delete a genuine unresolved spend claim before the InstantSend winner is mined, allowing a consumed output to return as spendable after restart. The carried-forward balance snapshot loss and redundant JNI allocation also remain valid, while the payment-flip coupling was explicitly extracted from this PR at the exact head and is therefore not an in-scope blocker here.
Source: Codex reviewers gpt-5.6-sol (general, security-auditor, rust-quality, FFI engineer); final verifier gpt-5.6-sol. openclaw-agent/cliproxy/gpt-5.6-sol is orchestration-only and not reviewer evidence.
Validated blockers were found in the Codex precheck. Opus is deferred until a fresh Codex revalidation clears the blocker gate.
Review provenance
- Codex reviewers:
gpt-5.6-sol— general (completed),gpt-5.6-sol— security-auditor (completed),gpt-5.6-sol— rust-quality (completed),gpt-5.6-sol— ffi-engineer (completed) - Verifier:
gpt-5.6-sol— verifier - Sonnet: not run (deferred by blocker gate)
🔴 1 blocking | 🟡 1 suggestion(s)
1 additional finding(s) omitted (not in diff).
2 carried-forward finding(s) already raised on this PR; not re-posting as new inline comments.
🤖 Prompt for all review comments with AI agents
These findings are from an automated code review. Verify each finding against the current code and only fix it if needed.
In `packages/rs-platform-wallet/src/wallet/core/balance_handler.rs`:
- [SUGGESTION] packages/rs-platform-wallet/src/wallet/core/balance_handler.rs:75-80: Do not discard a contended sweep balance snapshot
`TransactionsSwept` can be the only event carrying the corrected lower balance, particularly when an irrelevant final winner consumes a wallet input and emits no later wallet-relevant record. If a wallet lifecycle operation briefly holds the wallets-map write lock, `try_read()` drops that snapshot permanently. The event bus neither retries nor coalesces balance updates, so the public lock-free balance can continue displaying funds the underlying wallet removed until an unrelated balance-bearing event arrives. Use an ordered retry/coalescing path or another wallet lookup mechanism that guarantees eventual delivery of the latest snapshot.
In `packages/rs-platform-wallet-storage/src/sqlite/schema/core_state.rs`:
- [BLOCKING] packages/rs-platform-wallet-storage/src/sqlite/schema/core_state.rs:691-700: Do not expire unresolved holds by sweep observation age
(existing thread: https://github.com/dashpay/platform/pull/4406#discussion_r3823666903)
`held_since_height` records when the sweep was observed, not when its winner was mined. The pinned wallet emits `TransactionsSwept` from `process_mempool_transaction` when an InstantSend-locked winner arrives, and `drop_conflicted_transactions` explicitly treats InstantSend as settled without requiring block inclusion. Unrelated blocks and chainlocks can therefore advance `min(chainlock_height, synced_height)` past this two-block cutoff while the winner remains unmined, deleting the only durable claim for a funding output that has not materialized yet. After restart, a later funding-output delivery can insert that consumed output as unspent because neither the tombstone nor an irrelevant winner record remains. This is not equivalent to upstream `prune_finalized_observed_spends`, which stores the actual block height of each observed on-chain spend and prunes only when that specific height is within the finality boundary. Swift and Kotlin apply the same observation-age rule with weaker evidence, using synced height after merely observing some chainlock bytes. Retain the claim until persistence has evidence tying this winner to a finalized block height.
In `packages/rs-unified-sdk-jni/src/persistence.rs`:
- [SUGGESTION] packages/rs-unified-sdk-jni/src/persistence.rs:696-702: Allocate the sweep winner byte array once per batch
(existing thread: https://github.com/dashpay/platform/pull/4406#discussion_r3812592062)
`SweepBatchFFI::superseded_by` is invariant across every loser in the batch, but this loop allocates and copies the same 32-byte Java array once per txid. The loser count is network-influenced, and the projection runs synchronously inside the atomic persistence callback. The enclosing batch-local JNI frame can own one shared read-only array and reuse it in every `winners` slot; the in-tree Kotlin handler does not mutate these arrays.
…arsing) Pin fix/mnemonic-any-language-173ffac: the cherry-pick of dashpay/rust-dashcore#980 onto 173ffac0, the rev v4.2-dev already pins. This lands the BIP-39 fix without crossing the breaking key-wallet sweep changes (rust-dashcore #961/#962/#966/#969) that #4406 adapts platform to; once #4406 bumps onto rust-dashcore dev proper, the pin rejoins dev and this branch can be deleted. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
…per loser `superseded_by` is invariant for a batch, but the projection allocated a fresh 32-byte Java array for every loser. The loser count is network-influenced and this runs synchronously inside the atomic persistence callback, so it is work an attacker can scale. `new_object_array` fills every slot with its initial element, so the winner is now allocated once and the per-loser set disappears with it — the loop only projects txids. Sharing one array is safe because the Kotlin consumer only reads these values: `supersededBy[i]` feeds DAO arguments and entity fields, and nothing writes into the array.
…writes BalanceUpdateHandler::on_wallet_event is synchronous and looked wallets up with try_read() on the tokio RwLock wallets map, dropping the event's balance snapshot whenever a manager lifecycle write (create / remove / load) was in flight. The bus neither retries nor coalesces, and TransactionsSwept can be the only event carrying the corrected lower balance - the winner that settled the inputs need not be wallet-relevant - so one lost sweep leaves removed funds on display until an unrelated balance-bearing event happens to arrive. Convert the map to arc_swap::ArcSwap (already this crate's idiom for rare-write / hot-read state): readers take a wait-free snapshot that can never fail or block, so the drop window no longer exists rather than being papered over; the rare lifecycle writers publish via rcu, preserving the generation-checked removal's check-and-remove atomicity. The sync-context accessors that used blocking_read() become wait-free loads as a side effect, removing their panic-inside-runtime hazard. The regression test parks a lifecycle writer mid-rcu and asserts a sweep snapshot delivered in that window is observable immediately. The pre-fix form of the same test - holding wallets.write() across the delivery - was run against the old code first and failed with the balance atomics stuck at the stale value.
…ashcore-dev-961 Two conflicts, both about the rust-dashcore pin, plus one semantic break the textual merge hid. `v4.2-dev` pinned `a97b32c6` in #4455, which turns out to be a side branch off the old `173ffac0` carrying cherry-picks of the seed refresh and the BIP-39 fix. This branch pinned `5877d15f`, on `dev`'s mainline. Neither contains the other. Resolved onto `dev`'s head `b66db390`, which is a superset of both: it carries the seed refresh (#970) and the BIP-39 fix (#980) that `v4.2-dev` wanted, plus #966 and #969 that this branch needs, plus the QRInfo masternode-sync recovery (#947). The hidden break: `v4.2-dev` added `get_wallet_blocking`, which calls `blocking_read()` on the wallets map — a method this branch removed when the map became an `ArcSwap`. Git merged the file cleanly and the build failed. The accessor now loads wait-free; its name is kept so the FFI callers that predate the change still compile.
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Preliminary review — Codex only
The balance-snapshot and JNI winner-allocation fixes are correct, and the ordered, capability-negotiated sweep persistence path is otherwise well structured. One blocking durability defect remains: unresolved spend claims are expired by elapsed height even though the specific InstantSend winner may still be unmined, allowing a consumed output to return as spendable after restart. Source: Codex reviewer backends (general, security-auditor, rust-quality, FFI engineer): gpt-5.6-sol; final verifier backend: gpt-5.6-sol. openclaw-agent/cliproxy/gpt-5.6-sol is orchestration-only and not reviewer evidence.
Validated blockers were found in the Codex precheck. Opus is deferred until a fresh Codex revalidation clears the blocker gate.
Review provenance
- Codex reviewers:
gpt-5.6-sol— general (completed),gpt-5.6-sol— security-auditor (completed),gpt-5.6-sol— rust-quality (completed),gpt-5.6-sol— ffi-engineer (completed) - Verifier:
gpt-5.6-sol— verifier - Sonnet: not run (deferred by blocker gate)
🔴 1 blocking
1 carried-forward finding(s) already raised on this PR; not re-posting as new inline comments.
🤖 Prompt for all review comments with AI agents
These findings are from an automated code review. Verify each finding against the current code and only fix it if needed.
In `packages/rs-platform-wallet-storage/src/sqlite/schema/core_state.rs`:
- [BLOCKING] packages/rs-platform-wallet-storage/src/sqlite/schema/core_state.rs:691-700: Do not expire unresolved holds by sweep observation age
(existing thread: https://github.com/dashpay/platform/pull/4406#discussion_r3823666903)
`held_since_height` is the height at which the sweep was observed, not the block height at which its winner was mined. The pinned wallet invokes conflict sweeping for an InstantSend-locked transaction in the mempool path and emits `TransactionsSwept` before requiring block inclusion. Unrelated blocks can therefore advance `min(chainlock_height, synced_height)` two heights beyond the observation stamp while that winner remains unmined, causing this DELETE to remove the only durable claim for an as-yet-unmaterialized funding output. If the winner is wallet-irrelevant, no persisted winner record can restore that claim; after restart, later delivery of the funding output can insert the consumed coin as unspent. This is not equivalent to upstream `prune_finalized_observed_spends`: upstream stores the actual block height of each specific on-chain spend and prunes only after that height is within the finality boundary. Swift and Kotlin implement the same unsafe observation-age policy using synced height after only establishing that some chainlock bytes exist. Retain unresolved claims until persistence has evidence tying the specific winner to a finalized block height, or retain them indefinitely when that evidence is unavailable.
…ned height Repin rust-dashcore to 090faea2 (#975), which adds winner_mined_height to WalletEvent::TransactionsSwept, and rework the sweep-tombstone lifetime rule on all three backends to mirror key-wallet's observed-spends doctrine exactly, closing the held_since_height review blocker: - a mempool-context sweep (IS-locked winner, unmined) creates no placeholder at all: upstream deliberately never records an unconfirmed spend ("an unconfirmed spend must not invalidate a coin"), the engine keeps no durable hold the mirror could be mirroring, and the placeholder population an attacker could grow by double-spending incoming payments dies at the source - a block-context placeholder stores the winner's own mined height and is collected exactly when min(chainlock_height, synced_height) reaches it - prune_finalized_observed_spends' condition verbatim; the two-block observation-age margin, the held_since_height stamp, and the back-fill machinery are removed, not bypassed - an IS-locked chained re-point keeps the earlier block-context stamp, as upstream never retracts an observed-spend entry for an unconfirmed conflict; a block-context re-point re-stamps to the new winner's height - SweepBatchFFI carries the winner's finality context, and the numeric chainlock height now crosses to mobile through a new size-negotiated extension slot, replacing the "chainlock bytes exist" gate that let Swift and Kotlin collect on synced height alone SQLite V006 and Room's v12->13 migration are amended in place under the pre-release policy (nothing shipped has applied either); a dev database that ran the old V006 fails refinery's divergence check and must be recreated.
4 participants
Issue being fixed or feature implemented
Bumps
rust-dashcorefrom173ffac0to639e70e0(tip ofdev), which brings indashpay/rust-dashcore#961 — a never-broadcast transaction no longer credits money that
does not exist — plus the seven commits ahead of the previous pin.
#961 adds
WalletEvent::TransactionsSwept, the first subtractive event on the walletbus: it names transactions the wallet removed because a later, final transaction provably
beat them to their inputs. Every field on our persistence seam was additive, so without
handling it the mirror keeps the dead rows, hands them back at the next load, and
re-creates the balance the wallet just corrected — the same bug #961 fixes, one layer up.
What was done?
Event routing (
platform-wallet) — three consumers matched exhaustively onWalletEvent:BalanceUpdateHandlerroutes it like any other balance-bearing variant; a sweep is theone event that can lower the balance, and its snapshot is post-removal.
TransactionInstantLockedis:a swept transaction can never confirm, so a matching
Pendingsent payment moves toFailed— the state machine's previously unwritten terminal — whileConfirmedis neverdemoted and a chainlocked reinstatement (whose record re-arrives confirmed) advances
Failedback toConfirmed.build_core_changesetprojects it into the newCoreChangeSet.sweeps(orderedSweepBatches — losers, winner, released outpoints), counted byis_empty_no_recordsso asweep-only round survives the filter that decides whether the persister is called at all.
Persistence seam — the round's
SweepBatches cross the FFI through the persistenceextension's size-negotiated
on_persist_wallet_changeset_sweeps_fn(see the ABI findingbelow for why they must not ride
WalletChangeSetFFIitself), fired right after thechangeset callback in the same round and applied batch by batch and in order (a later batch
can keep a coin spent that an earlier one freed), after the additive part of the round,
since the transaction that won the inputs usually rides in the same changeset:
PlatformWalletPersistenceHandler.persistWalletChangesetSweeps/applySweptTransaction(Swift),
onWalletChangesetTransactionsSwept(Kotlin, viatramp_persist_wallet_changeset_sweepsinrs-unified-sdk-jni), andcore_state::apply_sweep(SQLite) delete the transaction row; the outputs it createdcascade with it.
outpoints upstream named. A coin whose funding TXO hasn't materialized yet (the loser was
persisted before its own funding output was observed) has no row to hold, so a held-but-
unfunded input gets a durable placeholder of its own instead: SQLite writes a
core_utxosrow keyed by outpoint (
spent_in_txid), and Swift/Kotlin detach the pending-input row fromthe doomed loser and repoint it at the winner (
isSweptTombstone/supersededByTxid) sothe claim survives both the loser's cascade-delete and the funding TXO's own later arrival.
Seam hardening (shipped in this PR, review-driven):
Chained sweeps before funding. A held-but-unfunded pending-input tombstone (above) is
keyed to that sweep's winner. If the winner is itself swept later, the mobile backends'
staged-row lookup (
spendingTransactionTxid = :loserTxid) can no longer find it — italready detached from that relationship the first time. Both mobile backends therefore run
a second lookup by the scalar
spendingTxidthe tombstone was repointed to (Kotlin'sDocumentDao.sweptTombstonesTargetingwith an in-memory partition against the releasedset; the scalar reconciliation in Swift's
applySweptTransaction) and carry it the rest ofthe chain: deleted if a later sweep finally releases it, repointed at the new winner if
not. SQLite never had this defect —
apply_sweepalways re-derives a loser's inputs fromits own
core_transactionsblob and matchescore_utxosby outpoint alone, so aplaceholder is chain-safe without any relationship to detach from in the first place.
Sweep-support capability negotiation. A persister predating sweep support processes
the rest of a round, returns success, and never sees
sweepsat all — Rust would thentreat the round as durable and clear it, letting the removed transaction return after
restart. Added
PersistenceCapabilities::CORE_SWEEP_REMOVAL(bit 10): the FFI persisteronly attests it when the host is structurally sweep-capable and explicitly declared the
bit (Swift's
makePersistenceCapabilities(), Kotlin'spersistenceCapabilitiesBits()), andthe wallet-event adapter (
core_bridge::commit_batch) now treatsstore()succeeding on asweep-bearing round as durable only when the backend attests it — otherwise it freezes that
wallet's sync watermark exactly like a
store()rejection (kotlin-sdk/platform-wallet: duplicated unspent TXO rows after SPV rescan following unclean shutdown (inflated balance) #4069's existingfail-closed guard), so a removal is never reported durable to a backend that cannot apply
it. All three in-tree backends (SQLite, Swift, Kotlin) now attest the bit.
Sweep transport off the unversioned changeset struct. Appending
sweeps/sweeps_counttoWalletChangeSetFFIwas safe in only one direction: the struct crossesthe C ABI by bare pointer with no size or version field, so the current Swift callback
installed against the previous native library (nothing prevents that pairing — the
callback signature and manager-create entry points are unchanged) would read
cs.sweeps_countand could dereferencecs.sweepsbeyond the end of the olderproducer's allocation: undefined behavior on an ordinary changeset round, which the
capability bit (semantics, not memory layout) cannot make safe. The struct is restored to
its released layout and the batches now ride
PersistenceCallbacksExtension— theexisting size-tagged transport — as
on_persist_wallet_changeset_sweeps_fn, appendedunder extension version 1 and read only when the host's declared
struct_sizeproves theslot exists.
CORE_SWEEP_REMOVAL's structural half is now that slot rather than thelegacy changeset pointer, whose unchanged signature proves nothing. Both cross-version
pairings are safe: an old host is simply never handed sweeps (and its watermark freezes
per the previous bullet), and a new host on an old library reads only the unchanged
struct prefix.
Detached tombstones survive the shared winner row's deletion (Swift). A first sweep
detaches unresolved pending inputs from multiple wallets and repoints them at winner W by
scalar
spendingTxid; when W's own record arrives,resolveInputOutpoint's(outpoint, spendingTxid)duplicate guard sees those tombstones and attaches nothing toW's row, so a later sweep of W lets the first wallet's callback delete the shared row
with another wallet's tombstones still naming it. That second wallet's callback used to
hit the missing-row early return and never apply its own release decision — a released
coin would resurrect spent under the obsolete W once funded, and a held tombstone could
never follow a further chained sweep.
applySweptTransactionnow runs the wallet-scopedscalar tombstone reconciliation regardless of whether the shared row still exists. Kotlin
never had the early return (its tombstone queries key on the scalar column and run
unconditionally) and SQLite's tables are
(wallet_id, …)-keyed with no shared rows;both are pinned by multi-wallet chained-sweep-before-funding confirmation tests.
JNI local-reference frames. The sweep-batch loop in
rs-unified-sdk-jni'stramp_persist_wallet_changesetbuilt each batch's arrays in the trampoline's own localframe; since the batch count is unbounded, a large enough changeset could exhaust ART's
local-reference table. Each batch's construction and callback invocation now run inside
their own
with_local_frame, matching the per-account loop just above it.One hold/release model on all three backends. The mobile drains give a sweep
tombstone priority over the newest-wins pick (records precede sweeps in a round, so the
winner's own pending row can coexist with the tombstone and must not delete it); every
hold names its winner (
supersededByTxid, mirroring SQLite'sspent_in_txid) so arestore-rescan re-delivering the funding output cannot resurrect a provably consumed
coin, while pre-stamp rows keep the old re-delivery backstop; releases apply by outpoint
on every backend (reaching claims that drained onto the TXO with no relationship left to
follow) and clear the stamp in the same statement; and every
isSpentwriter ismonotonic under a stamp, so the winner's own IS-locked arrival cannot flip a durable hold
back into the restore set. SQLite additionally applies a batch's released outpoints even
when the swept txid has no row (record loss must not swallow a release), and its
co-swept-parent skip is scoped to parents whose row is actually on hand to delete.
Sweeps cascade beyond the transaction tables. A sweep now drops the tracked asset
locks its losers funded (through the changeset's existing
removedchannel, with achainlocked reinstatement re-inserting via reconstruction) and fails the matching
Pendingsent DashPay payments, as described under event routing above.How Has This Been Tested?
swept_transaction_projection_tests(core_bridge.rs): the arm names the dead txids andnothing else, survives
is_empty_no_records, and dedupes across a merged round.cargo test -p platform-wallet --lib— 686 passed, including thesweep_without_declared_capability_freezes_the_wallet_despite_a_successful_store/sweep_with_declared_capability_does_not_freezeadapter-loop tests for the capability gate.sqlite_transaction_sweeps.rs:cargo test -p platform-wallet-storage— all green,including the chained-sweep-before-funding tests and the new
a_multi_wallet_chained_sweep_before_funding_reconciles_each_wallets_own_tombstonesconfirming SQLite's
(wallet_id, …)-keyed design needed no fix for either finding.platform-wallet-ffiunit tests —cargo test -p platform-wallet-ffi --lib, 276 passed —including
a_legacy_sized_extension_refuses_the_sweeps_slot_but_keeps_dpns(alegacy-declared
struct_sizemust make Rust refuse the sweeps slot rather than read it),core_sweep_removal_requires_the_extension_slot_and_the_declaration, the extensionappend-only layout pins, and
store_delivers_sweeps_through_the_extension_slot_after_the_changeset(in-order,after-the-changeset delivery; a slot-less host still succeeds with sweeps undelivered).
SweptTransactionPersistTests.swift: the row and its outputs go, the funding transactionstays, the claimed coin becomes spendable again, an unknown txid is a no-op, a tombstone
survives (or correctly moves through) a second sweep, and the new
testSharedWinnerDeletedByAnotherWalletsCallbackStillReconcilesThisWalletsTombstonesmulti-wallet chained-sweep-before-funding regression, plus the review-round pins: the
coexisting winner-row drain, the stamped-hold re-delivery pair, the by-outpoint release
reaching a drained claim, and the record-pass/spent-emit downgrade guards pinned
independently. Full
SwiftDashSDKTestssuite on the iPhone 17 simulator — 360 passed.PlatformWalletPersistenceHandlerTest:sweptTransactionIsDeletedAndReleasesItsSpendClaim,sweptTransactionRollsBackWithItsRound(the deletion is staged in the round's bufferedtransaction, so a failed round must not take the rows with it), the chained-sweep pair,
and the new multi-wallet
sharedWinnerDeletedByAnotherWalletsCallbackStillReconcilesThisWalletsTombstonesconfirmation test, plus the review-round pins (coexisting winner-row drain, stamped-hold
re-delivery and its pre-stamp backstop, released-marker clearing, the spent-emit
downgrade guard, the two-wallet released-pending deadlock, and the capability-guarded
sweep-slot default).
:sdk:testDebugUnitTest— 329 passed across the suite, 99 in thisclass. (No Room schema change in any round: no new columns, no migration.)
reverted, run, restored) before being counted above. The Kotlin/SQLite multi-wallet tests
are confirmations of designs that needed no fix, so they have no revert to fail against.
cargo check --workspace --all-targetsandcargo fmt --all -- --checkclean.Not exercised on a device or against live sync: no wallet was driven into an actual
double-spend to watch the sweep arrive end to end.
Breaking Changes
WalletChangeSetFFIkeeps its released layout — an earlier revision of this PR appended thesweep fields to it, which review found unsafe in the new-callback-on-old-library direction,
so the payload moved to
PersistenceCallbacksExtension's size-negotiatedon_persist_wallet_changeset_sweeps_fninstead (appended under extension version 1; olderextensions fail closed by declared
struct_size, so this is not a C ABI break either).NativePersistenceBridgegains anopen funwhose inherited body consults the subclass'sown declared capability bits: a subclass that declares
CORE_SWEEP_REMOVALwithoutoverriding the slot fails the round (declared removals must never be silently swallowed
under an advancing watermark), while a non-attesting subclass keeps a benign success (its
watermark is stripped Rust-side anyway).
The behavioral story stands: a backend that does not both wire the extension's sweeps slot
and declare
CORE_SWEEP_REMOVALis deliberately treated as not supporting sweep removal —the wallet-event adapter freezes that wallet's durable sync watermark on every sweep-bearing
round rather than trust a
store()success that never carried the removal (see the"Sweep-support capability negotiation" bullet above). This is intentional fail-closed
behavior, not a regression — silently losing the removal was the bug — but any out-of-tree
persister that implements sweep removal must supply the extension callback and add the bit to
its declared capabilities to avoid a spurious watermark freeze.
Checklist:
For repository code-owners and collaborators only
Summary by CodeRabbit
New Features
CORE_SWEEP_REMOVALpersistence capability so a backend must explicitly attest sweep-removal support before its sync watermark is trusted to advance through a sweep.Bug Fixes
Tests