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Merged
jtraglia merged 18 commits into from
Jun 19, 2026
Merged

Add builder execution requests (EIP-8282) #5359

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20d292f
Add EIP-8282 to Gloas
jtraglia Jun 11, 2026
be0f335
Go back to using withdrawal_credentials
jtraglia Jun 12, 2026
c90980c
Sign builder deposits with DOMAIN_BUILDER_DEPOSIT
jtraglia Jun 12, 2026
f1e91b9
Move BUILDER_WITHDRAWAL_PREFIX back to beacon-chain.md
jtraglia Jun 12, 2026
5483667
Onboarded builders have a version of zero
jtraglia Jun 12, 2026
b78e143
Move helper functions back to beacon-chain.md
jtraglia Jun 12, 2026
a9077f3
Keep version from withdrawal credentials for now
jtraglia Jun 12, 2026
76e9c40
Merge branch 'master' into eip8282
jtraglia Jun 12, 2026
4ac8251
Set MAX_BUILDER_DEPOSIT_REQUESTS_PER_PAYLOAD to 256
jtraglia Jun 15, 2026
f089bde
Merge branch 'master' into eip8282
jihoonsong Jun 18, 2026
7049710
Merge remote-tracking branch 'upstream/master' into eip8282
jtraglia Jun 18, 2026
ec21b6e
Cast index to BuilderIndex
jtraglia Jun 18, 2026
347f9b7
Update operations test format
jtraglia Jun 18, 2026
8a73ad0
Update DOMAIN_INCLUSION_LIST_COMMITTEE
jtraglia Jun 18, 2026
c15bd91
Improve testing
jtraglia Jun 18, 2026
ed960f1
Apply feedback from nflaig
jtraglia Jun 19, 2026
c84f2e4
add test for builder exit request
nflaig Jun 19, 2026
bb5e31e
Merge branch 'master' into eip8282
jtraglia Jun 19, 2026
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7 changes: 7 additions & 0 deletions presets/mainnet/gloas.yaml
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Expand Up @@ -10,6 +10,13 @@ PTC_SIZE: 512
# 2**2 (= 4) attestations
MAX_PAYLOAD_ATTESTATIONS: 4

# Execution
# ---------------------------------------------------------------
# 2**8 (= 256) builder deposit requests
MAX_BUILDER_DEPOSIT_REQUESTS_PER_PAYLOAD: 256
# 2**4 (= 16) builder exit requests
MAX_BUILDER_EXIT_REQUESTS_PER_PAYLOAD: 16

@potuz potuz Jun 19, 2026

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This may be very costly, but with these numbers assymmetric, someone could make a ton of deposits and then withdraw all of them and take the whole churn for a long time.

@nflaig nflaig Jun 19, 2026

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I don't think there is a good reason to use such a low value for exits as they are generally cheap to process

@jtraglia jtraglia Jun 19, 2026 •
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Staying in the target of 2 exit requests per payload, it would require locking up 14,400 ETH ($30m) to delay the builder exit queue by one day. This doesn't feel like a realistic concern.

@nflaig nflaig Jun 19, 2026

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no, not a concern imo, we have a really high MIN_BUILDER_WITHDRAWABILITY_DELAY so this would be way too expensive, and exiting builders isn't actually time sensitive and already takes a long time


# State list lengths
# ---------------------------------------------------------------
# 2**40 (= 1,099,511,627,776) builder spots
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7 changes: 7 additions & 0 deletions presets/minimal/gloas.yaml
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Expand Up @@ -10,6 +10,13 @@ PTC_SIZE: 16
# 2**2 (= 4) attestations
MAX_PAYLOAD_ATTESTATIONS: 4

# Execution
# ---------------------------------------------------------------
# 2**8 (= 256) builder deposit requests
MAX_BUILDER_DEPOSIT_REQUESTS_PER_PAYLOAD: 256
# 2**4 (= 16) builder exit requests
MAX_BUILDER_EXIT_REQUESTS_PER_PAYLOAD: 16

# State list lengths
# ---------------------------------------------------------------
# 2**40 (= 1,099,511,627,776) builder spots
Expand Down
2 changes: 2 additions & 0 deletions pysetup/spec_builders/heze.py
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Expand Up @@ -68,6 +68,8 @@ def is_inclusion_list_satisfied(self: ExecutionEngine,
def deprecate_functions(cls) -> set[str]:
return {
"initialize_ptc_window",
"is_builder_withdrawal_credential",
"is_pending_validator",
"onboard_builders_from_pending_deposits",
"upgrade_to_gloas",
}
2 changes: 1 addition & 1 deletion specs/_features/eip8025/beacon-chain.md
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Expand Up @@ -50,7 +50,7 @@ and imports proof types from [proof-engine.md](./proof-engine.md).

| Name | Value |
| ------------------------ | -------------------------- |
| `DOMAIN_EXECUTION_PROOF` | `DomainType('0x0E000000')` |
| `DOMAIN_EXECUTION_PROOF` | `DomainType('0x0F000000')` |

@jihoonsong jihoonsong Jun 18, 2026

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Suggested change
| `DOMAIN_EXECUTION_PROOF` | `DomainType('0x0F000000')` |
| `DOMAIN_EXECUTION_PROOF` | `DomainType('0x0G000000')` |

@jtraglia jtraglia Jun 18, 2026

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Hmm 0x0F doesn't exist yet here. Since this is based on Gloas, not Heze. But yeah, we can change this optimistically.

@jtraglia jtraglia Jun 18, 2026

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If this comes before Heze, the domain in Heze would change instead. If that makes sense.

@jihoonsong jihoonsong Jun 18, 2026

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Either this or Heze's one should be changed. Slightly prefer to change this one to G because it's not entirely scheduled to ship this.

@jtraglia jtraglia Jun 18, 2026

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To be clear, since both are currently based off Gloas they do not need to be different right now. After thinking about this for a while, I have just pushed a commit with changes Heze's DOMAIN_INCLUSION_LIST_COMMITTEE to 0x10000000. I changed this instead of DOMAIN_EXECUTION_PROOF because (1) I consider optional proofs to be part of Gloas and (2) I expect optional proofs to go live on mainnet before Heze does.


## Containers

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8 changes: 7 additions & 1 deletion specs/_features/eip8148/beacon-chain.md
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Expand Up @@ -55,7 +55,7 @@ control their balance withdrawals more precisely.

| Name | Value |
| ------------------------------ | ---------------- |
| `SWEEP_THRESHOLD_REQUEST_TYPE` | `Bytes1('0x03')` |
| `SWEEP_THRESHOLD_REQUEST_TYPE` | `Bytes1('0x05')` |

### Sweep threshold validation

Expand Down Expand Up @@ -137,6 +137,8 @@ class ExecutionRequests(Container):
deposits: List[DepositRequest, MAX_DEPOSIT_REQUESTS_PER_PAYLOAD]
withdrawals: List[WithdrawalRequest, MAX_WITHDRAWAL_REQUESTS_PER_PAYLOAD]
consolidations: List[ConsolidationRequest, MAX_CONSOLIDATION_REQUESTS_PER_PAYLOAD]
builder_deposits: List[BuilderDepositRequest, MAX_BUILDER_DEPOSIT_REQUESTS_PER_PAYLOAD]
builder_exits: List[BuilderExitRequest, MAX_BUILDER_EXIT_REQUESTS_PER_PAYLOAD]
# [New in EIP8148]
sweep_thresholds: List[SetSweepThresholdRequest, MAX_SET_SWEEP_THRESHOLD_REQUESTS_PER_PAYLOAD]
```
Expand Down Expand Up @@ -239,6 +241,8 @@ def get_execution_requests_list(execution_requests: ExecutionRequests) -> Sequen
(DEPOSIT_REQUEST_TYPE, execution_requests.deposits),
(WITHDRAWAL_REQUEST_TYPE, execution_requests.withdrawals),
(CONSOLIDATION_REQUEST_TYPE, execution_requests.consolidations),
(BUILDER_DEPOSIT_REQUEST_TYPE, execution_requests.builder_deposits),
(BUILDER_EXIT_REQUEST_TYPE, execution_requests.builder_exits),
# [New in EIP8148]
(SWEEP_THRESHOLD_REQUEST_TYPE, execution_requests.sweep_thresholds),
]
Expand Down Expand Up @@ -376,6 +380,8 @@ def apply_parent_execution_payload(
for_ops(requests.deposits, process_deposit_request)
for_ops(requests.withdrawals, process_withdrawal_request)
for_ops(requests.consolidations, process_consolidation_request)
for_ops(requests.builder_deposits, process_builder_deposit_request)
for_ops(requests.builder_exits, process_builder_exit_request)
# [New in EIP8148]
for_ops(requests.sweep_thresholds, process_set_sweep_threshold_request)

Expand Down
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