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fix(rpc): set prevrandao to zero for eth_simulateV1 simulated blocks #21399

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Merged
klkvr merged 1 commit into from
Jan 26, 2026
Merged

fix(rpc): set prevrandao to zero for eth_simulateV1 simulated blocks #21399

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5 changes: 5 additions & 0 deletions crates/rpc/rpc-eth-api/src/helpers/call.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -116,6 +116,11 @@ pub trait EthCall: EstimateCall + Call + LoadPendingBlock + LoadBlock + FullEthA

let SimBlock { block_overrides, state_overrides, calls } = block;

// Set prevrandao to zero for simulated blocks by default,
// matching spec behavior where MixDigest is zero-initialized.
// If user provides an override, it will be applied by apply_block_overrides.
evm_env.block_env.inner_mut().prevrandao = Some(B256::ZERO);

if let Some(block_overrides) = block_overrides {
// ensure we don't allow uncapped gas limit per block
if let Some(gas_limit_override) = block_overrides.gas_limit &&
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