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[Feature] Provide txroot hash to executionPayload to block conversion #3444

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#3452
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[Feature] Provide txroot hash to executionPayload to block conversion#3444
#3452
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Soubhik-10
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enhancementNew feature or request
@mattsse

Description

@mattsse
mattsse
opened on Jan 6, 2026

Component

rpc

Describe the feature you would like

this would currently decode the txs and compute the the root

alloy/crates/rpc-types-engine/src/payload.rs

Lines 1238 to 1241 in 72038c5

pub fn try_into_block_with_sidecar<T: Decodable2718>(
self,
sidecar: &ExecutionPayloadSidecar,
) -> Result<Block<T>, PayloadError> {

via:

alloy/crates/rpc-types-engine/src/payload.rs

Lines 340 to 344 in 72038c5

// Calculate the transactions root using encoded bytes
let transactions_root = alloy_consensus::proofs::ordered_trie_root_with_encoder(
&self.transactions,
|item, buf| buf.put_slice(item),
);

in reth payload validation we can avoid or rather optimize the root calc separately,

so it'd be nice to have an extra fn that also accepts the tx root hash directly, like

try_into_block_with_meta

or smth.

and ideally this unifies the existing fn:

alloy/crates/rpc-types-engine/src/payload.rs

Lines 335 to 344 in 72038c5

pub fn into_block_raw(self) -> Result<Block<Bytes>, PayloadError> {
if self.extra_data.len() > MAXIMUM_EXTRA_DATA_SIZE {
return Err(PayloadError::ExtraData(self.extra_data));
}
// Calculate the transactions root using encoded bytes
let transactions_root = alloy_consensus::proofs::ordered_trie_root_with_encoder(
&self.transactions,
|item, buf| buf.put_slice(item),
);

with an extra fn that accepts an Optional txroot hash arg

@Soubhik-10 ?

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enhancementNew feature or request

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Alloy

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