The Osaka fork (EIP-7607) includes networking changes (peerDAS), increases
the gas cost while limiting the input size of the MODEXP precompile, limits
the maximum gas per transaction, raises the blob base fee to always be above
the execution cost, limits the RLP-encoded size of blocks, introduces a count
leading zeros (CLZ) instruction, and adds a new precompile supporting the
secp256r1 curve.
Notices
Changes
Upgrade Schedule
| Network | Timestamp | Date & Time (UTC) | Fork Hash | Beacon Chain Epoch |
| Holesky | 1759308480 | 2025-10-01 08:48:00 | 0x783def52 | 165120 |
| Sepolia | 1760427360 | 2025-10-14 07:36:00 | 0xe2ae4999 | 272640 |
| Hoodi | 1761677592 | 2025-10-28 18:53:12 | 0xe7e0e7ff | 50688 |
| Mainnet | 1764798551 | 2025-12-03 21:49:11 | 0x5167e2a6 | 411392 |
Releases