ethereum.forks.bpo1
The first blob parameter only (BPO) fork, BPO1, includes only changes to the blob fee schedule.
Changes
Upgrade Schedule
| Network | Timestamp | Date & Time (UTC) | Fork Hash | Beacon Chain Epoch |
| Holesky | 1759800000 | 2025-10-07 01:20:00 | 0xa280a45c | 166400 |
| Sepolia | 1761017184 | 2025-10-21 03:26:24 | 0x56078a1e | 274176 |
| Hoodi | 1762365720 | 2025-11-05 18:02:00 | 0x3893353e | 52480 |
| Mainnet | 1765290071 | 2025-12-09 14:21:11 | 0xcba2a1c0 | 412672 |
FORK_CRITERIA
| 23 | FORK_CRITERIA: ForkCriteria = ByTimestamp(1765290071) |
|---|
ethereum.forks.bpo2
The second blob parameter only (BPO) fork, BPO2, includes only changes to the blob fee schedule.
Changes
Upgrade Schedule
| Network | Timestamp | Date & Time (UTC) | Fork Hash | Beacon Chain Epoch |
| Holesky | | | | |
| Sepolia | | | | |
| Hoodi | | | | |
| Mainnet | 1767747671 | 2025-12-11 21:15:54 | 0x07c9462e | |
FORK_CRITERIA
| 23 | FORK_CRITERIA: ForkCriteria = ByTimestamp(1767747671) |
|---|