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Set execution_payment field when constructing bid #4804

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jtraglia merged 5 commits into from
Jan 5, 2026
Merged

Set execution_payment field when constructing bid #4804

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9ea7fe9
add execution payment info when constructing bid
faheelsattar Dec 21, 2025
27ac677
rephrase
faheelsattar Dec 22, 2025
887825f
fix
faheelsattar Dec 22, 2025
3d58e72
fix lint
faheelsattar Dec 22, 2025
d89e3ff
Fix nits
jtraglia Jan 5, 2026
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5 changes: 4 additions & 1 deletion specs/gloas/builder.md
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Expand Up @@ -119,7 +119,10 @@ to include. They produce a `SignedExecutionPayloadBid` as follows.
10. Set `bid.value` to be the value (in gwei) that the builder will pay the
proposer if the bid is accepted. The builder **MUST** have enough excess
balance to fulfill this bid and all pending payments.
11. Set `bid.blob_kzg_commitments_root` to be the `hash_tree_root` of the
11. Set `bid.execution_payment` to zero. A non-zero value indicates a trusted
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@satushh satushh Dec 30, 2025

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Simple doubt: If it is set to 0, why do we have it? Is it used somewhere else?

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@jtraglia jtraglia Jan 5, 2026

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Hey @satushh. This field is used by "trusted" builders for an out-of-protocol auction.

execution-layer payment. Bids with non-zero `execution_payment` **MUST NOT**
be broadcast to the `execution_payload_bid` gossip topic.
12. Set `bid.blob_kzg_commitments_root` to be the `hash_tree_root` of the
`blobsbundle.commitments` field returned by `engine_getPayloadV5`.

After building the `bid`, the builder obtains a `signature` of the bid by using:
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