diff --git a/crates/astria-bridge-contracts/src/lib.rs b/crates/astria-bridge-contracts/src/lib.rs
index 9587a81e23..5dc68f619c 100644
--- a/crates/astria-bridge-contracts/src/lib.rs
+++ b/crates/astria-bridge-contracts/src/lib.rs
@@ -14,7 +14,7 @@ use astria_core::{
     },
     protocol::{
         memos,
-        transaction::v1alpha1::{
+        transactions::v1alpha1::{
             action::Ics20Withdrawal,
             Action,
         },
@@ -453,7 +453,7 @@ where
         let to = parse_destination_chain_as_address(&event)
             .map_err(GetWithdrawalActionsError::destination_chain_as_address)?;
 
-        let action = astria_core::protocol::transaction::v1alpha1::action::BridgeUnlockAction {
+        let action = astria_core::protocol::transactions::v1alpha1::action::BridgeUnlockAction {
             to,
             amount,
             memo,
diff --git a/crates/astria-bridge-withdrawer/src/bridge_withdrawer/batch.rs b/crates/astria-bridge-withdrawer/src/bridge_withdrawer/batch.rs
index 7a56861819..79d5674c2d 100644
--- a/crates/astria-bridge-withdrawer/src/bridge_withdrawer/batch.rs
+++ b/crates/astria-bridge-withdrawer/src/bridge_withdrawer/batch.rs
@@ -1,4 +1,4 @@
-use astria_core::protocol::transaction::v1alpha1::Action;
+use astria_core::protocol::transactions::v1alpha1::Action;
 
 #[derive(Debug)]
 pub(crate) struct Batch {
diff --git a/crates/astria-bridge-withdrawer/src/bridge_withdrawer/startup.rs b/crates/astria-bridge-withdrawer/src/bridge_withdrawer/startup.rs
index 52412ccdc6..35becf7b4c 100644
--- a/crates/astria-bridge-withdrawer/src/bridge_withdrawer/startup.rs
+++ b/crates/astria-bridge-withdrawer/src/bridge_withdrawer/startup.rs
@@ -13,7 +13,7 @@ use astria_core::{
         asset::v1alpha1::AllowedFeeAssetsResponse,
         bridge::v1alpha1::BridgeAccountLastTxHashResponse,
         memos,
-        transaction::v1alpha1::Action,
+        transactions::v1alpha1::Action,
     },
 };
 use astria_eyre::eyre::{
@@ -284,16 +284,16 @@ impl Startup {
         );
 
         let proto_tx =
-            astria_core::generated::protocol::transaction::v1alpha1::SignedTransaction::decode(
+            astria_core::generated::protocol::transactions::v1alpha1::SignedTransaction::decode(
                 &*last_transaction.tx,
             )
             .wrap_err_with(|| format!(
                             "failed to decode data in Sequencer CometBFT transaction as `{}`",
-                            astria_core::generated::protocol::transaction::v1alpha1::SignedTransaction::full_name(),
+                            astria_core::generated::protocol::transactions::v1alpha1::SignedTransaction::full_name(),
                         ))?;
 
         let tx = SignedTransaction::try_from_raw(proto_tx)
-            .wrap_err_with(|| format!("failed to verify {}", astria_core::generated::protocol::transaction::v1alpha1::SignedTransaction::full_name()))?;
+            .wrap_err_with(|| format!("failed to verify {}", astria_core::generated::protocol::transactions::v1alpha1::SignedTransaction::full_name()))?;
 
         info!(
             last_bridge_account_tx.hash = %telemetry::display::hex(&tx_hash),
diff --git a/crates/astria-bridge-withdrawer/src/bridge_withdrawer/submitter/mod.rs b/crates/astria-bridge-withdrawer/src/bridge_withdrawer/submitter/mod.rs
index 4febe56ecf..76736158e0 100644
--- a/crates/astria-bridge-withdrawer/src/bridge_withdrawer/submitter/mod.rs
+++ b/crates/astria-bridge-withdrawer/src/bridge_withdrawer/submitter/mod.rs
@@ -11,7 +11,7 @@ use astria_core::{
         },
         GetPendingNonceRequest,
     },
-    protocol::transaction::v1alpha1::{
+    protocol::transactions::v1alpha1::{
         Action,
         TransactionParams,
         UnsignedTransaction,
diff --git a/crates/astria-bridge-withdrawer/tests/blackbox/helpers/mock_cometbft.rs b/crates/astria-bridge-withdrawer/tests/blackbox/helpers/mock_cometbft.rs
index 29b17f1c34..d6c7a0ea2d 100644
--- a/crates/astria-bridge-withdrawer/tests/blackbox/helpers/mock_cometbft.rs
+++ b/crates/astria-bridge-withdrawer/tests/blackbox/helpers/mock_cometbft.rs
@@ -341,7 +341,7 @@ fn prepare_broadcast_tx_commit_response(response: tx_commit::Response) -> Mock {
 
 /// Convert a `Request` object to a `SignedTransaction`
 pub fn signed_tx_from_request(request: &wiremock::Request) -> SignedTransaction {
-    use astria_core::generated::protocol::transaction::v1alpha1::SignedTransaction as RawSignedTransaction;
+    use astria_core::generated::protocol::transactions::v1alpha1::SignedTransaction as RawSignedTransaction;
     use prost::Message as _;
 
     let wrapped_tx_sync_req: tendermint_rpc::request::Wrapper<tx_sync::Request> =
diff --git a/crates/astria-bridge-withdrawer/tests/blackbox/helpers/test_bridge_withdrawer.rs b/crates/astria-bridge-withdrawer/tests/blackbox/helpers/test_bridge_withdrawer.rs
index 2d48ca54a1..83adea835c 100644
--- a/crates/astria-bridge-withdrawer/tests/blackbox/helpers/test_bridge_withdrawer.rs
+++ b/crates/astria-bridge-withdrawer/tests/blackbox/helpers/test_bridge_withdrawer.rs
@@ -21,7 +21,7 @@ use astria_core::{
             BridgeUnlock,
             Ics20WithdrawalFromRollup,
         },
-        transaction::v1alpha1::{
+        transactions::v1alpha1::{
             action::{
                 BridgeUnlockAction,
                 Ics20Withdrawal,
diff --git a/crates/astria-bridge-withdrawer/tests/blackbox/main.rs b/crates/astria-bridge-withdrawer/tests/blackbox/main.rs
index 00aa141f39..6cb5a0a32e 100644
--- a/crates/astria-bridge-withdrawer/tests/blackbox/main.rs
+++ b/crates/astria-bridge-withdrawer/tests/blackbox/main.rs
@@ -1,4 +1,4 @@
-use astria_core::protocol::transaction::v1alpha1::Action;
+use astria_core::protocol::transactions::v1alpha1::Action;
 use helpers::{
     assert_actions_eq,
     default_sequencer_address,
diff --git a/crates/astria-cli/src/commands/bridge/collect.rs b/crates/astria-cli/src/commands/bridge/collect.rs
index 317b9d574f..81d84df513 100644
--- a/crates/astria-cli/src/commands/bridge/collect.rs
+++ b/crates/astria-cli/src/commands/bridge/collect.rs
@@ -19,7 +19,7 @@ use astria_core::{
         },
         Address,
     },
-    protocol::transaction::v1alpha1::Action,
+    protocol::transactions::v1alpha1::Action,
 };
 use clap::Args;
 use color_eyre::eyre::{
diff --git a/crates/astria-cli/src/commands/bridge/submit.rs b/crates/astria-cli/src/commands/bridge/submit.rs
index 7287fee1a4..a557095028 100644
--- a/crates/astria-cli/src/commands/bridge/submit.rs
+++ b/crates/astria-cli/src/commands/bridge/submit.rs
@@ -5,7 +5,7 @@ use std::path::{
 
 use astria_core::{
     crypto::SigningKey,
-    protocol::transaction::v1alpha1::{
+    protocol::transactions::v1alpha1::{
         Action,
         TransactionParams,
         UnsignedTransaction,
diff --git a/crates/astria-cli/src/commands/sequencer.rs b/crates/astria-cli/src/commands/sequencer.rs
index 63311c7df5..ab19761117 100644
--- a/crates/astria-cli/src/commands/sequencer.rs
+++ b/crates/astria-cli/src/commands/sequencer.rs
@@ -4,7 +4,7 @@ use astria_core::{
         Address,
         ADDRESS_LEN,
     },
-    protocol::transaction::v1alpha1::{
+    protocol::transactions::v1alpha1::{
         action::{
             Action,
             BridgeLockAction,
diff --git a/crates/astria-composer/src/collectors/geth.rs b/crates/astria-composer/src/collectors/geth.rs
index 5b819de468..f1f1f2feba 100644
--- a/crates/astria-composer/src/collectors/geth.rs
+++ b/crates/astria-composer/src/collectors/geth.rs
@@ -20,7 +20,7 @@ use astria_core::{
         asset,
         RollupId,
     },
-    protocol::transaction::v1alpha1::action::SequenceAction,
+    protocol::transactions::v1alpha1::action::SequenceAction,
 };
 use astria_eyre::eyre::{
     self,
diff --git a/crates/astria-composer/src/collectors/grpc.rs b/crates/astria-composer/src/collectors/grpc.rs
index 091cca23b2..047c3f0056 100644
--- a/crates/astria-composer/src/collectors/grpc.rs
+++ b/crates/astria-composer/src/collectors/grpc.rs
@@ -12,7 +12,7 @@ use astria_core::{
         asset,
         RollupId,
     },
-    protocol::transaction::v1alpha1::action::SequenceAction,
+    protocol::transactions::v1alpha1::action::SequenceAction,
 };
 use tokio::sync::mpsc::error::SendTimeoutError;
 use tonic::{
diff --git a/crates/astria-composer/src/executor/builder.rs b/crates/astria-composer/src/executor/builder.rs
index 871a4f1b33..e4b7a5e9a5 100644
--- a/crates/astria-composer/src/executor/builder.rs
+++ b/crates/astria-composer/src/executor/builder.rs
@@ -7,7 +7,7 @@ use std::{
 use astria_core::{
     crypto::SigningKey,
     primitive::v1::Address,
-    protocol::transaction::v1alpha1::action::SequenceAction,
+    protocol::transactions::v1alpha1::action::SequenceAction,
 };
 use astria_eyre::eyre::{
     self,
diff --git a/crates/astria-composer/src/executor/bundle_factory/mod.rs b/crates/astria-composer/src/executor/bundle_factory/mod.rs
index 58a3e5a9b2..e5e9ba8c9b 100644
--- a/crates/astria-composer/src/executor/bundle_factory/mod.rs
+++ b/crates/astria-composer/src/executor/bundle_factory/mod.rs
@@ -10,7 +10,7 @@ use std::{
 
 use astria_core::{
     primitive::v1::RollupId,
-    protocol::transaction::v1alpha1::{
+    protocol::transactions::v1alpha1::{
         action::SequenceAction,
         Action,
     },
diff --git a/crates/astria-composer/src/executor/bundle_factory/tests.rs b/crates/astria-composer/src/executor/bundle_factory/tests.rs
index dd8af22cf7..6f460cd693 100644
--- a/crates/astria-composer/src/executor/bundle_factory/tests.rs
+++ b/crates/astria-composer/src/executor/bundle_factory/tests.rs
@@ -3,7 +3,7 @@ use astria_core::{
         RollupId,
         ROLLUP_ID_LEN,
     },
-    protocol::transaction::v1alpha1::action::SequenceAction,
+    protocol::transactions::v1alpha1::action::SequenceAction,
 };
 
 mod sized_bundle {
diff --git a/crates/astria-composer/src/executor/mod.rs b/crates/astria-composer/src/executor/mod.rs
index c0e60240fe..f2095cd9ed 100644
--- a/crates/astria-composer/src/executor/mod.rs
+++ b/crates/astria-composer/src/executor/mod.rs
@@ -14,7 +14,7 @@ use astria_core::{
     crypto::SigningKey,
     protocol::{
         abci::AbciErrorCode,
-        transaction::v1alpha1::{
+        transactions::v1alpha1::{
             action::SequenceAction,
             SignedTransaction,
             TransactionParams,
diff --git a/crates/astria-composer/src/executor/tests.rs b/crates/astria-composer/src/executor/tests.rs
index 0529fd449f..594c8392df 100644
--- a/crates/astria-composer/src/executor/tests.rs
+++ b/crates/astria-composer/src/executor/tests.rs
@@ -9,7 +9,7 @@ use astria_core::{
         RollupId,
         ROLLUP_ID_LEN,
     },
-    protocol::transaction::v1alpha1::action::SequenceAction,
+    protocol::transactions::v1alpha1::action::SequenceAction,
 };
 use astria_eyre::eyre;
 use once_cell::sync::Lazy;
@@ -174,7 +174,7 @@ async fn mount_default_nonce_query_mock(server: &MockServer) -> MockGuard {
 
 /// Convert a `Request` object to a `SignedTransaction`
 fn signed_tx_from_request(request: &Request) -> SignedTransaction {
-    use astria_core::generated::protocol::transaction::v1alpha1::SignedTransaction as RawSignedTransaction;
+    use astria_core::generated::protocol::transactions::v1alpha1::SignedTransaction as RawSignedTransaction;
     use prost::Message as _;
 
     let wrapped_tx_sync_req: request::Wrapper<tx_sync::Request> =
diff --git a/crates/astria-composer/src/test_utils.rs b/crates/astria-composer/src/test_utils.rs
index 0759b81666..aadfbc7faa 100644
--- a/crates/astria-composer/src/test_utils.rs
+++ b/crates/astria-composer/src/test_utils.rs
@@ -4,7 +4,7 @@ use astria_core::{
         RollupId,
         ROLLUP_ID_LEN,
     },
-    protocol::transaction::v1alpha1::action::SequenceAction,
+    protocol::transactions::v1alpha1::action::SequenceAction,
     Protobuf as _,
 };
 
diff --git a/crates/astria-composer/tests/blackbox/helper/mod.rs b/crates/astria-composer/tests/blackbox/helper/mod.rs
index 6b287a29b0..45119e1ff2 100644
--- a/crates/astria-composer/tests/blackbox/helper/mod.rs
+++ b/crates/astria-composer/tests/blackbox/helper/mod.rs
@@ -13,7 +13,7 @@ use astria_core::{
     primitive::v1::RollupId,
     protocol::{
         abci::AbciErrorCode,
-        transaction::v1alpha1::SignedTransaction,
+        transactions::v1alpha1::SignedTransaction,
     },
 };
 use astria_eyre::eyre;
@@ -153,7 +153,7 @@ pub async fn loop_until_composer_is_ready(addr: SocketAddr) {
 }
 
 fn signed_tx_from_request(request: &Request) -> SignedTransaction {
-    use astria_core::generated::protocol::transaction::v1alpha1::SignedTransaction as RawSignedTransaction;
+    use astria_core::generated::protocol::transactions::v1alpha1::SignedTransaction as RawSignedTransaction;
     use prost::Message as _;
 
     let wrapped_tx_sync_req: request::Wrapper<tx_sync::Request> =
diff --git a/crates/astria-core/src/generated/mod.rs b/crates/astria-core/src/generated/mod.rs
index 5762c6e3c5..0203c38a9d 100644
--- a/crates/astria-core/src/generated/mod.rs
+++ b/crates/astria-core/src/generated/mod.rs
@@ -96,7 +96,7 @@ pub mod protocol {
         }
     }
     #[path = ""]
-    pub mod transaction {
+    pub mod transactions {
         pub mod v1alpha1 {
             include!("astria.protocol.transactions.v1alpha1.rs");
 
diff --git a/crates/astria-core/src/protocol/mod.rs b/crates/astria-core/src/protocol/mod.rs
index 2d30299b22..d01eb39fab 100644
--- a/crates/astria-core/src/protocol/mod.rs
+++ b/crates/astria-core/src/protocol/mod.rs
@@ -1,6 +1,6 @@
 use bytes::Bytes;
 use indexmap::IndexMap;
-use transaction::v1alpha1::SignedTransaction;
+use transactions::v1alpha1::SignedTransaction;
 
 use crate::primitive::v1::RollupId;
 
@@ -9,7 +9,7 @@ pub mod account;
 pub mod asset;
 pub mod bridge;
 pub mod memos;
-pub mod transaction;
+pub mod transactions;
 
 #[cfg(any(feature = "test-utils", test))]
 pub mod test_utils;
diff --git a/crates/astria-core/src/protocol/test_utils.rs b/crates/astria-core/src/protocol/test_utils.rs
index 1f399a4227..e0faebee7a 100644
--- a/crates/astria-core/src/protocol/test_utils.rs
+++ b/crates/astria-core/src/protocol/test_utils.rs
@@ -7,7 +7,7 @@ use prost::Message as _;
 
 use super::{
     group_sequence_actions_in_signed_transaction_transactions_by_rollup_id,
-    transaction::v1alpha1::{
+    transactions::v1alpha1::{
         action::SequenceAction,
         TransactionParams,
         UnsignedTransaction,
@@ -64,7 +64,7 @@ impl ConfigureSequencerBlock {
         use tendermint::Time;
 
         use crate::{
-            protocol::transaction::v1alpha1::Action,
+            protocol::transactions::v1alpha1::Action,
             sequencerblock::v1alpha1::block::RollupData,
         };
 
diff --git a/crates/astria-core/src/protocol/transaction/mod.rs b/crates/astria-core/src/protocol/transaction/mod.rs
deleted file mode 100644
index 5607443876..0000000000
--- a/crates/astria-core/src/protocol/transaction/mod.rs
+++ /dev/null
@@ -1,3 +0,0 @@
-pub mod v1alpha1;
-
-use crate::generated::protocol::transaction::v1alpha1 as raw;
diff --git a/crates/astria-core/src/protocol/transactions/mod.rs b/crates/astria-core/src/protocol/transactions/mod.rs
new file mode 100644
index 0000000000..1f44391b58
--- /dev/null
+++ b/crates/astria-core/src/protocol/transactions/mod.rs
@@ -0,0 +1,3 @@
+pub mod v1alpha1;
+
+use crate::generated::protocol::transactions::v1alpha1 as raw;
diff --git a/crates/astria-core/src/protocol/transaction/v1alpha1/action.rs b/crates/astria-core/src/protocol/transactions/v1alpha1/action.rs
similarity index 100%
rename from crates/astria-core/src/protocol/transaction/v1alpha1/action.rs
rename to crates/astria-core/src/protocol/transactions/v1alpha1/action.rs
diff --git a/crates/astria-core/src/protocol/transaction/v1alpha1/mod.rs b/crates/astria-core/src/protocol/transactions/v1alpha1/mod.rs
similarity index 99%
rename from crates/astria-core/src/protocol/transaction/v1alpha1/mod.rs
rename to crates/astria-core/src/protocol/transactions/v1alpha1/mod.rs
index c7569452f8..7eb822ae6c 100644
--- a/crates/astria-core/src/protocol/transaction/v1alpha1/mod.rs
+++ b/crates/astria-core/src/protocol/transactions/v1alpha1/mod.rs
@@ -560,7 +560,7 @@ mod test {
             asset,
             Address,
         },
-        protocol::transaction::v1alpha1::action::TransferAction,
+        protocol::transactions::v1alpha1::action::TransferAction,
     };
     const ASTRIA_ADDRESS_PREFIX: &str = "astria";
 
diff --git a/crates/astria-core/src/protocol/transaction/v1alpha1/snapshots/astria_core__protocol__transaction__v1alpha1__test__signed_transaction_hash.snap b/crates/astria-core/src/protocol/transactions/v1alpha1/snapshots/astria_core__protocol__transaction__v1alpha1__test__signed_transaction_hash.snap
similarity index 100%
rename from crates/astria-core/src/protocol/transaction/v1alpha1/snapshots/astria_core__protocol__transaction__v1alpha1__test__signed_transaction_hash.snap
rename to crates/astria-core/src/protocol/transactions/v1alpha1/snapshots/astria_core__protocol__transaction__v1alpha1__test__signed_transaction_hash.snap
diff --git a/crates/astria-core/src/protocol/transactions/v1alpha1/snapshots/astria_core__protocol__transactions__v1alpha1__test__signed_transaction_hash.snap b/crates/astria-core/src/protocol/transactions/v1alpha1/snapshots/astria_core__protocol__transactions__v1alpha1__test__signed_transaction_hash.snap
new file mode 100644
index 0000000000..52d245496f
--- /dev/null
+++ b/crates/astria-core/src/protocol/transactions/v1alpha1/snapshots/astria_core__protocol__transactions__v1alpha1__test__signed_transaction_hash.snap
@@ -0,0 +1,38 @@
+---
+source: crates/astria-core/src/protocol/transactions/v1alpha1/mod.rs
+expression: tx.sha256_of_proto_encoding()
+---
+[
+  69,
+  121,
+  100,
+  127,
+  170,
+  148,
+  126,
+  89,
+  26,
+  55,
+  220,
+  69,
+  192,
+  9,
+  204,
+  228,
+  198,
+  50,
+  224,
+  128,
+  204,
+  76,
+  243,
+  148,
+  32,
+  203,
+  177,
+  19,
+  14,
+  106,
+  67,
+  114
+]
diff --git a/crates/astria-core/src/sequencerblock/v1alpha1/block.rs b/crates/astria-core/src/sequencerblock/v1alpha1/block.rs
index 140f8c3706..9952b9ef13 100644
--- a/crates/astria-core/src/sequencerblock/v1alpha1/block.rs
+++ b/crates/astria-core/src/sequencerblock/v1alpha1/block.rs
@@ -30,7 +30,7 @@ use crate::{
         IncorrectRollupIdLength,
         RollupId,
     },
-    protocol::transaction::v1alpha1::{
+    protocol::transactions::v1alpha1::{
         action,
         SignedTransaction,
         SignedTransactionError,
@@ -727,7 +727,7 @@ impl SequencerBlock {
         let mut rollup_datas = IndexMap::new();
         for elem in data_list {
             let raw_tx =
-                crate::generated::protocol::transaction::v1alpha1::SignedTransaction::decode(
+                crate::generated::protocol::transactions::v1alpha1::SignedTransaction::decode(
                     &*elem,
                 )
                 .map_err(SequencerBlockError::signed_transaction_protobuf_decode)?;
diff --git a/crates/astria-sequencer-client/src/extension_trait.rs b/crates/astria-sequencer-client/src/extension_trait.rs
index 5180f0b13f..fcdf78a451 100644
--- a/crates/astria-sequencer-client/src/extension_trait.rs
+++ b/crates/astria-sequencer-client/src/extension_trait.rs
@@ -39,7 +39,7 @@ use astria_core::protocol::{
         BridgeAccountInfoResponse,
         BridgeAccountLastTxHashResponse,
     },
-    transaction::v1alpha1::{
+    transactions::v1alpha1::{
         TransactionFeeResponse,
         UnsignedTransaction,
     },
@@ -51,7 +51,7 @@ pub use astria_core::{
             BalanceResponse,
             NonceResponse,
         },
-        transaction::v1alpha1::SignedTransaction,
+        transactions::v1alpha1::SignedTransaction,
     },
     sequencerblock::v1alpha1::{
         block::SequencerBlockError,
@@ -627,7 +627,7 @@ pub trait SequencerClientExt: Client {
             .map_err(|e| Error::tendermint_rpc("abci_query", e))?;
 
         let proto_response =
-            astria_core::generated::protocol::transaction::v1alpha1::TransactionFeeResponse::decode(
+            astria_core::generated::protocol::transactions::v1alpha1::TransactionFeeResponse::decode(
                 &*response.value,
             )
             .map_err(|e| {
diff --git a/crates/astria-sequencer-client/src/lib.rs b/crates/astria-sequencer-client/src/lib.rs
index 4f8c018f01..95c8baa700 100644
--- a/crates/astria-sequencer-client/src/lib.rs
+++ b/crates/astria-sequencer-client/src/lib.rs
@@ -19,7 +19,7 @@ pub use astria_core::{
             BalanceResponse,
             NonceResponse,
         },
-        transaction::v1alpha1::SignedTransaction,
+        transactions::v1alpha1::SignedTransaction,
     },
     sequencerblock::v1alpha1::SequencerBlock,
 };
diff --git a/crates/astria-sequencer-client/src/tests/http.rs b/crates/astria-sequencer-client/src/tests/http.rs
index a7f40c365f..9bad7193f7 100644
--- a/crates/astria-sequencer-client/src/tests/http.rs
+++ b/crates/astria-sequencer-client/src/tests/http.rs
@@ -2,7 +2,7 @@ use astria_core::{
     crypto::SigningKey,
     generated::protocol::asset::v1alpha1::AllowedFeeAssetsResponse,
     primitive::v1::Address,
-    protocol::transaction::v1alpha1::{
+    protocol::transactions::v1alpha1::{
         action::TransferAction,
         SignedTransaction,
         TransactionParams,
@@ -317,7 +317,7 @@ async fn get_bridge_account_last_transaction_hash() {
 
 #[tokio::test]
 async fn get_transaction_fee() {
-    use astria_core::generated::protocol::transaction::v1alpha1::{
+    use astria_core::generated::protocol::transactions::v1alpha1::{
         TransactionFee,
         TransactionFeeResponse,
     };
diff --git a/crates/astria-sequencer/src/accounts/action.rs b/crates/astria-sequencer/src/accounts/action.rs
index 8d4853ea68..8578bd0a08 100644
--- a/crates/astria-sequencer/src/accounts/action.rs
+++ b/crates/astria-sequencer/src/accounts/action.rs
@@ -5,7 +5,7 @@ use anyhow::{
 };
 use astria_core::{
     primitive::v1::Address,
-    protocol::transaction::v1alpha1::action::TransferAction,
+    protocol::transactions::v1alpha1::action::TransferAction,
     Protobuf,
 };
 use tracing::instrument;
diff --git a/crates/astria-sequencer/src/app/mod.rs b/crates/astria-sequencer/src/app/mod.rs
index cc59071f13..e709778844 100644
--- a/crates/astria-sequencer/src/app/mod.rs
+++ b/crates/astria-sequencer/src/app/mod.rs
@@ -18,11 +18,11 @@ use anyhow::{
     Context,
 };
 use astria_core::{
-    generated::protocol::transaction::v1alpha1 as raw,
+    generated::protocol::transactions::v1alpha1 as raw,
     primitive::v1::Address,
     protocol::{
         abci::AbciErrorCode,
-        transaction::v1alpha1::{
+        transactions::v1alpha1::{
             action::ValidatorUpdate,
             Action,
             SignedTransaction,
diff --git a/crates/astria-sequencer/src/app/test_utils.rs b/crates/astria-sequencer/src/app/test_utils.rs
index 09b3571a0a..be7d0353a5 100644
--- a/crates/astria-sequencer/src/app/test_utils.rs
+++ b/crates/astria-sequencer/src/app/test_utils.rs
@@ -1,7 +1,7 @@
 use astria_core::{
     crypto::SigningKey,
     primitive::v1::RollupId,
-    protocol::transaction::v1alpha1::{
+    protocol::transactions::v1alpha1::{
         action::{
             SequenceAction,
             ValidatorUpdate,
diff --git a/crates/astria-sequencer/src/app/tests_app.rs b/crates/astria-sequencer/src/app/tests_app.rs
index 195b810999..813f76a47a 100644
--- a/crates/astria-sequencer/src/app/tests_app.rs
+++ b/crates/astria-sequencer/src/app/tests_app.rs
@@ -5,7 +5,7 @@ use astria_core::{
         asset::TracePrefixed,
         RollupId,
     },
-    protocol::transaction::v1alpha1::{
+    protocol::transactions::v1alpha1::{
         action::{
             BridgeLockAction,
             SequenceAction,
diff --git a/crates/astria-sequencer/src/app/tests_breaking_changes.rs b/crates/astria-sequencer/src/app/tests_breaking_changes.rs
index 8c1bb2d097..118c84a8c7 100644
--- a/crates/astria-sequencer/src/app/tests_breaking_changes.rs
+++ b/crates/astria-sequencer/src/app/tests_breaking_changes.rs
@@ -16,7 +16,7 @@ use std::{
 
 use astria_core::{
     primitive::v1::RollupId,
-    protocol::transaction::v1alpha1::{
+    protocol::transactions::v1alpha1::{
         action::{
             BridgeLockAction,
             BridgeSudoChangeAction,
@@ -181,7 +181,7 @@ async fn app_finalize_block_snapshot() {
 #[allow(clippy::too_many_lines)]
 #[tokio::test]
 async fn app_execute_transaction_with_every_action_snapshot() {
-    use astria_core::protocol::transaction::v1alpha1::action::{
+    use astria_core::protocol::transactions::v1alpha1::action::{
         FeeAssetChangeAction,
         InitBridgeAccountAction,
         SudoAddressChangeAction,
diff --git a/crates/astria-sequencer/src/app/tests_execute_transaction.rs b/crates/astria-sequencer/src/app/tests_execute_transaction.rs
index e2d3449c78..250c30d6c8 100644
--- a/crates/astria-sequencer/src/app/tests_execute_transaction.rs
+++ b/crates/astria-sequencer/src/app/tests_execute_transaction.rs
@@ -6,7 +6,7 @@ use astria_core::{
         asset,
         RollupId,
     },
-    protocol::transaction::v1alpha1::{
+    protocol::transactions::v1alpha1::{
         action::{
             BridgeLockAction,
             BridgeUnlockAction,
@@ -476,7 +476,7 @@ async fn app_execute_transaction_sudo_address_change_error() {
 
 #[tokio::test]
 async fn app_execute_transaction_fee_asset_change_addition() {
-    use astria_core::protocol::transaction::v1alpha1::action::FeeAssetChangeAction;
+    use astria_core::protocol::transactions::v1alpha1::action::FeeAssetChangeAction;
 
     let alice = get_alice_signing_key();
     let alice_address = astria_address(&alice.address_bytes());
@@ -502,7 +502,7 @@ async fn app_execute_transaction_fee_asset_change_addition() {
 
 #[tokio::test]
 async fn app_execute_transaction_fee_asset_change_removal() {
-    use astria_core::protocol::transaction::v1alpha1::action::FeeAssetChangeAction;
+    use astria_core::protocol::transactions::v1alpha1::action::FeeAssetChangeAction;
 
     let alice = get_alice_signing_key();
     let alice_address = astria_address(&alice.address_bytes());
@@ -534,7 +534,7 @@ async fn app_execute_transaction_fee_asset_change_removal() {
 
 #[tokio::test]
 async fn app_execute_transaction_fee_asset_change_invalid() {
-    use astria_core::protocol::transaction::v1alpha1::action::FeeAssetChangeAction;
+    use astria_core::protocol::transactions::v1alpha1::action::FeeAssetChangeAction;
 
     let alice = get_alice_signing_key();
 
@@ -562,7 +562,7 @@ async fn app_execute_transaction_fee_asset_change_invalid() {
 
 #[tokio::test]
 async fn app_execute_transaction_init_bridge_account_ok() {
-    use astria_core::protocol::transaction::v1alpha1::action::InitBridgeAccountAction;
+    use astria_core::protocol::transactions::v1alpha1::action::InitBridgeAccountAction;
 
     let alice = get_alice_signing_key();
     let alice_address = astria_address(&alice.address_bytes());
@@ -624,7 +624,7 @@ async fn app_execute_transaction_init_bridge_account_ok() {
 
 #[tokio::test]
 async fn app_execute_transaction_init_bridge_account_account_already_registered() {
-    use astria_core::protocol::transaction::v1alpha1::action::InitBridgeAccountAction;
+    use astria_core::protocol::transactions::v1alpha1::action::InitBridgeAccountAction;
 
     let alice = get_alice_signing_key();
     let mut app = initialize_app(None, vec![]).await;
@@ -753,7 +753,7 @@ async fn app_execute_transaction_bridge_lock_action_ok() {
 
 #[tokio::test]
 async fn app_execute_transaction_bridge_lock_action_invalid_for_eoa() {
-    use astria_core::protocol::transaction::v1alpha1::action::BridgeLockAction;
+    use astria_core::protocol::transactions::v1alpha1::action::BridgeLockAction;
 
     let alice = get_alice_signing_key();
     let mut app = initialize_app(None, vec![]).await;
diff --git a/crates/astria-sequencer/src/authority/action.rs b/crates/astria-sequencer/src/authority/action.rs
index baf6220db9..674cc9b083 100644
--- a/crates/astria-sequencer/src/authority/action.rs
+++ b/crates/astria-sequencer/src/authority/action.rs
@@ -6,7 +6,7 @@ use anyhow::{
 };
 use astria_core::{
     primitive::v1::Address,
-    protocol::transaction::v1alpha1::action::{
+    protocol::transactions::v1alpha1::action::{
         FeeChange,
         FeeChangeAction,
         SudoAddressChangeAction,
diff --git a/crates/astria-sequencer/src/authority/component.rs b/crates/astria-sequencer/src/authority/component.rs
index 91d8d71c7b..58afe9a9e6 100644
--- a/crates/astria-sequencer/src/authority/component.rs
+++ b/crates/astria-sequencer/src/authority/component.rs
@@ -6,7 +6,7 @@ use anyhow::{
 };
 use astria_core::{
     primitive::v1::Address,
-    protocol::transaction::v1alpha1::action::ValidatorUpdate,
+    protocol::transactions::v1alpha1::action::ValidatorUpdate,
 };
 use tendermint::abci::request::{
     BeginBlock,
diff --git a/crates/astria-sequencer/src/authority/mod.rs b/crates/astria-sequencer/src/authority/mod.rs
index 0eb1de4a6b..876df381de 100644
--- a/crates/astria-sequencer/src/authority/mod.rs
+++ b/crates/astria-sequencer/src/authority/mod.rs
@@ -8,7 +8,7 @@ use anyhow::Context as _;
 use astria_core::{
     crypto::VerificationKey,
     primitive::v1::ADDRESS_LEN,
-    protocol::transaction::v1alpha1::action::ValidatorUpdate,
+    protocol::transactions::v1alpha1::action::ValidatorUpdate,
 };
 use serde::{
     Deserialize,
diff --git a/crates/astria-sequencer/src/authority/state_ext.rs b/crates/astria-sequencer/src/authority/state_ext.rs
index afdb4856a8..8ff0047160 100644
--- a/crates/astria-sequencer/src/authority/state_ext.rs
+++ b/crates/astria-sequencer/src/authority/state_ext.rs
@@ -126,7 +126,7 @@ impl<T: StateWrite> StateWriteExt for T {}
 
 #[cfg(test)]
 mod tests {
-    use astria_core::protocol::transaction::v1alpha1::action::ValidatorUpdate;
+    use astria_core::protocol::transactions::v1alpha1::action::ValidatorUpdate;
     use cnidarium::StateDelta;
 
     use super::{
diff --git a/crates/astria-sequencer/src/bridge/bridge_lock_action.rs b/crates/astria-sequencer/src/bridge/bridge_lock_action.rs
index 2326593150..d7e0fbf311 100644
--- a/crates/astria-sequencer/src/bridge/bridge_lock_action.rs
+++ b/crates/astria-sequencer/src/bridge/bridge_lock_action.rs
@@ -5,7 +5,7 @@ use anyhow::{
 };
 use astria_core::{
     primitive::v1::Address,
-    protocol::transaction::v1alpha1::action::{
+    protocol::transactions::v1alpha1::action::{
         BridgeLockAction,
         TransferAction,
     },
diff --git a/crates/astria-sequencer/src/bridge/bridge_sudo_change_action.rs b/crates/astria-sequencer/src/bridge/bridge_sudo_change_action.rs
index 518a9417e9..2675797313 100644
--- a/crates/astria-sequencer/src/bridge/bridge_sudo_change_action.rs
+++ b/crates/astria-sequencer/src/bridge/bridge_sudo_change_action.rs
@@ -5,7 +5,7 @@ use anyhow::{
 };
 use astria_core::{
     primitive::v1::Address,
-    protocol::transaction::v1alpha1::action::BridgeSudoChangeAction,
+    protocol::transactions::v1alpha1::action::BridgeSudoChangeAction,
 };
 use tracing::instrument;
 
diff --git a/crates/astria-sequencer/src/bridge/bridge_unlock_action.rs b/crates/astria-sequencer/src/bridge/bridge_unlock_action.rs
index 550cf5dce4..00566c229d 100644
--- a/crates/astria-sequencer/src/bridge/bridge_unlock_action.rs
+++ b/crates/astria-sequencer/src/bridge/bridge_unlock_action.rs
@@ -6,7 +6,7 @@ use anyhow::{
 };
 use astria_core::{
     primitive::v1::Address,
-    protocol::transaction::v1alpha1::action::{
+    protocol::transactions::v1alpha1::action::{
         BridgeUnlockAction,
         TransferAction,
     },
diff --git a/crates/astria-sequencer/src/bridge/init_bridge_account_action.rs b/crates/astria-sequencer/src/bridge/init_bridge_account_action.rs
index 986a314bfe..d21920ea25 100644
--- a/crates/astria-sequencer/src/bridge/init_bridge_account_action.rs
+++ b/crates/astria-sequencer/src/bridge/init_bridge_account_action.rs
@@ -6,7 +6,7 @@ use anyhow::{
 };
 use astria_core::{
     primitive::v1::Address,
-    protocol::transaction::v1alpha1::action::InitBridgeAccountAction,
+    protocol::transactions::v1alpha1::action::InitBridgeAccountAction,
 };
 use tracing::instrument;
 
diff --git a/crates/astria-sequencer/src/fee_asset_change.rs b/crates/astria-sequencer/src/fee_asset_change.rs
index 7ccdfdf804..8eca22fa32 100644
--- a/crates/astria-sequencer/src/fee_asset_change.rs
+++ b/crates/astria-sequencer/src/fee_asset_change.rs
@@ -6,7 +6,7 @@ use anyhow::{
 };
 use astria_core::{
     primitive::v1::Address,
-    protocol::transaction::v1alpha1::action::FeeAssetChangeAction,
+    protocol::transactions::v1alpha1::action::FeeAssetChangeAction,
 };
 use async_trait::async_trait;
 
diff --git a/crates/astria-sequencer/src/ibc/ibc_relayer_change.rs b/crates/astria-sequencer/src/ibc/ibc_relayer_change.rs
index cb37a1ac30..a0718f0eb6 100644
--- a/crates/astria-sequencer/src/ibc/ibc_relayer_change.rs
+++ b/crates/astria-sequencer/src/ibc/ibc_relayer_change.rs
@@ -5,7 +5,7 @@ use anyhow::{
 };
 use astria_core::{
     primitive::v1::Address,
-    protocol::transaction::v1alpha1::action::IbcRelayerChangeAction,
+    protocol::transactions::v1alpha1::action::IbcRelayerChangeAction,
 };
 use async_trait::async_trait;
 
diff --git a/crates/astria-sequencer/src/ibc/ics20_withdrawal.rs b/crates/astria-sequencer/src/ibc/ics20_withdrawal.rs
index 859ca1d920..42660a34a6 100644
--- a/crates/astria-sequencer/src/ibc/ics20_withdrawal.rs
+++ b/crates/astria-sequencer/src/ibc/ics20_withdrawal.rs
@@ -10,7 +10,7 @@ use astria_core::{
         asset::Denom,
         Address,
     },
-    protocol::transaction::v1alpha1::action,
+    protocol::transactions::v1alpha1::action,
 };
 use ibc_types::core::channel::{
     ChannelId,
diff --git a/crates/astria-sequencer/src/mempool/benchmarks.rs b/crates/astria-sequencer/src/mempool/benchmarks.rs
index dacf377f00..cce73ba1fe 100644
--- a/crates/astria-sequencer/src/mempool/benchmarks.rs
+++ b/crates/astria-sequencer/src/mempool/benchmarks.rs
@@ -15,7 +15,7 @@ use astria_core::{
         },
         RollupId,
     },
-    protocol::transaction::v1alpha1::{
+    protocol::transactions::v1alpha1::{
         action::{
             Action,
             SequenceAction,
diff --git a/crates/astria-sequencer/src/mempool/mod.rs b/crates/astria-sequencer/src/mempool/mod.rs
index 6ccf5f9e22..0170328ee5 100644
--- a/crates/astria-sequencer/src/mempool/mod.rs
+++ b/crates/astria-sequencer/src/mempool/mod.rs
@@ -21,7 +21,7 @@ use anyhow::Context;
 use astria_core::{
     crypto::SigningKey,
     primitive::v1::ADDRESS_LEN,
-    protocol::transaction::v1alpha1::{
+    protocol::transactions::v1alpha1::{
         SignedTransaction,
         TransactionParams,
         UnsignedTransaction,
diff --git a/crates/astria-sequencer/src/proposal/commitment.rs b/crates/astria-sequencer/src/proposal/commitment.rs
index 1578b47208..dc63e36873 100644
--- a/crates/astria-sequencer/src/proposal/commitment.rs
+++ b/crates/astria-sequencer/src/proposal/commitment.rs
@@ -4,7 +4,7 @@ use astria_core::{
     primitive::v1::RollupId,
     protocol::{
         group_sequence_actions_in_signed_transaction_transactions_by_rollup_id,
-        transaction::v1alpha1::SignedTransaction,
+        transactions::v1alpha1::SignedTransaction,
     },
     sequencerblock::v1alpha1::block::{
         Deposit,
@@ -93,7 +93,7 @@ pub(crate) fn generate_rollup_datas_commitment(
 mod test {
     use astria_core::{
         crypto::SigningKey,
-        protocol::transaction::v1alpha1::{
+        protocol::transactions::v1alpha1::{
             action::{
                 SequenceAction,
                 TransferAction,
diff --git a/crates/astria-sequencer/src/sequence/action.rs b/crates/astria-sequencer/src/sequence/action.rs
index 5b52bfe760..faa77ee977 100644
--- a/crates/astria-sequencer/src/sequence/action.rs
+++ b/crates/astria-sequencer/src/sequence/action.rs
@@ -5,7 +5,7 @@ use anyhow::{
 };
 use astria_core::{
     primitive::v1::Address,
-    protocol::transaction::v1alpha1::action::SequenceAction,
+    protocol::transactions::v1alpha1::action::SequenceAction,
     Protobuf,
 };
 use tracing::instrument;
diff --git a/crates/astria-sequencer/src/service/consensus.rs b/crates/astria-sequencer/src/service/consensus.rs
index a57706023b..0cf3a01489 100644
--- a/crates/astria-sequencer/src/service/consensus.rs
+++ b/crates/astria-sequencer/src/service/consensus.rs
@@ -210,7 +210,7 @@ mod test {
             VerificationKey,
         },
         primitive::v1::RollupId,
-        protocol::transaction::v1alpha1::{
+        protocol::transactions::v1alpha1::{
             action::SequenceAction,
             TransactionParams,
             UnsignedTransaction,
diff --git a/crates/astria-sequencer/src/service/mempool.rs b/crates/astria-sequencer/src/service/mempool.rs
index 8ce3d114d3..dc0e8b1b6a 100644
--- a/crates/astria-sequencer/src/service/mempool.rs
+++ b/crates/astria-sequencer/src/service/mempool.rs
@@ -9,10 +9,10 @@ use std::{
 
 use anyhow::Context as _;
 use astria_core::{
-    generated::protocol::transaction::v1alpha1 as raw,
+    generated::protocol::transactions::v1alpha1 as raw,
     protocol::{
         abci::AbciErrorCode,
-        transaction::v1alpha1::SignedTransaction,
+        transactions::v1alpha1::SignedTransaction,
     },
 };
 use cnidarium::Storage;
diff --git a/crates/astria-sequencer/src/transaction/checks.rs b/crates/astria-sequencer/src/transaction/checks.rs
index e73e18acf7..93ac8fff6d 100644
--- a/crates/astria-sequencer/src/transaction/checks.rs
+++ b/crates/astria-sequencer/src/transaction/checks.rs
@@ -10,7 +10,7 @@ use astria_core::{
         Address,
         RollupId,
     },
-    protocol::transaction::v1alpha1::{
+    protocol::transactions::v1alpha1::{
         action::{
             Action,
             BridgeLockAction,
@@ -325,7 +325,7 @@ mod tests {
             RollupId,
             ADDRESS_LEN,
         },
-        protocol::transaction::v1alpha1::{
+        protocol::transactions::v1alpha1::{
             action::{
                 SequenceAction,
                 TransferAction,
diff --git a/crates/astria-sequencer/src/transaction/mod.rs b/crates/astria-sequencer/src/transaction/mod.rs
index 1426a91804..84e19e58af 100644
--- a/crates/astria-sequencer/src/transaction/mod.rs
+++ b/crates/astria-sequencer/src/transaction/mod.rs
@@ -11,7 +11,7 @@ use anyhow::{
 };
 use astria_core::{
     primitive::v1::Address,
-    protocol::transaction::v1alpha1::{
+    protocol::transactions::v1alpha1::{
         action::Action,
         SignedTransaction,
         UnsignedTransaction,
diff --git a/crates/astria-sequencer/src/transaction/query.rs b/crates/astria-sequencer/src/transaction/query.rs
index 1bda4fe45d..c2d100f7af 100644
--- a/crates/astria-sequencer/src/transaction/query.rs
+++ b/crates/astria-sequencer/src/transaction/query.rs
@@ -1,8 +1,8 @@
 use astria_core::{
-    generated::protocol::transaction::v1alpha1::UnsignedTransaction as RawUnsignedTransaction,
+    generated::protocol::transactions::v1alpha1::UnsignedTransaction as RawUnsignedTransaction,
     protocol::{
         abci::AbciErrorCode,
-        transaction::v1alpha1::UnsignedTransaction,
+        transactions::v1alpha1::UnsignedTransaction,
     },
 };
 use cnidarium::Storage;
@@ -23,7 +23,7 @@ pub(crate) async fn transaction_fee_request(
     request: request::Query,
     _params: Vec<(String, String)>,
 ) -> response::Query {
-    use astria_core::protocol::transaction::v1alpha1::TransactionFeeResponse;
+    use astria_core::protocol::transactions::v1alpha1::TransactionFeeResponse;
 
     let tx = match preprocess_request(&request) {
         Ok(tx) => tx,
diff --git a/crates/astria-sequencer/src/utils.rs b/crates/astria-sequencer/src/utils.rs
index 0ee4ffffa6..f77444cfd1 100644
--- a/crates/astria-sequencer/src/utils.rs
+++ b/crates/astria-sequencer/src/utils.rs
@@ -1,7 +1,7 @@
 use anyhow::Context as _;
 use astria_core::{
     generated::astria_vendored::tendermint::abci as raw,
-    protocol::transaction::v1alpha1::action::ValidatorUpdate,
+    protocol::transactions::v1alpha1::action::ValidatorUpdate,
     Protobuf as _,
 };