EIPs included in the Fulu/Osaka Ethereum network upgrade.
Abstract
This Meta EIP lists the EIPs included in the Fulu/Osaka network upgrade. It follows the Pectra upgrade, documented in EIP-7600.
Specification
Included EIPs
Core EIPs
- EIP-7594: PeerDAS - Peer Data Availability Sampling
- EIP-7823: Set upper bounds for MODEXP
- EIP-7825: Transaction Gas Limit Cap
- EIP-7883: ModExp Gas Cost Increase
- EIP-7917: Deterministic proposer lookahead
- EIP-7918: Blob base fee bounded by execution cost
- EIP-7934: RLP Execution Block Size Limit
- EIP-7939: Count leading zeros (CLZ) opcode
- EIP-7951: Precompile for secp256r1 Curve Support
Other EIPs
- EIP-7892: Blob Parameter Only Hardforks
- EIP-7642: eth/69 - Drop pre-merge fields
- Client teams MUST support this EIP by the activation of the Fusaka network upgrade.
- EIP-7910: eth_config JSON-RPC Method
- Client teams MUST support this JSON-RPC method by the activation of Fusaka network upgrade.
- EIP-7935: Set default gas limit to 60M
Activation
| Network Name | Activation Epoch | Activation Timestamp | Activation Time (UTC) | Fork ID |
|---|---|---|---|---|
| Holešky | 165120 |
1759308480 |
2025-10-01 08:48:00 | 0x783def52 |
| Sepolia | 272640 |
1760427360 |
2025-10-14 07:36:00 | 0xe2ae4999 |
| Hoodi | 50688 |
1761677592 |
2025-10-28 18:53:12 | 0xe7e0e7ff |
| Mainnet | 411392 |
1764798551 |
2025-12-03 21:49:11 | 0x5167e2a6 |
Blob Parameter Only Forks
Blob Parameter Only (BPO) forks, defined in EIP-7892, are scheduled alongside Fusaka to raise blob capacity without additional protocol changes.
BPO 1
| Network Name | Activation Epoch | Activation Timestamp | Activation Time (UTC) | Fork ID |
|---|---|---|---|---|
| Holešky | 166400 |
1759800000 |
2025-10-07 01:20:00 | 0xa280a45c |
| Sepolia | 274176 |
1761017184 |
2025-10-21 03:26:24 | 0x56078a1e |
| Hoodi | 52480 |
1762365720 |
2025-11-05 18:02:00 | 0x3893353e |
| Mainnet | 412672 |
1765290071 |
2025-12-09 14:21:11 | 0xcba2a1c0 |
BPO 2
| Network Name | Activation Epoch | Activation Timestamp | Activation Time (UTC) | Fork ID |
|---|---|---|---|---|
| Holešky | 167936 |
1760389824 |
2025-10-13 21:10:24 | 0x9bc6cb31 |
| Sepolia | 275712 |
1761607008 |
2025-10-27 23:16:48 | 0x268956b6 |
| Hoodi | 54016 |
1762955544 |
2025-11-12 13:52:24 | 0x23aa1351 |
| Mainnet | 419072 |
1767747671 |
2026-01-07 01:01:11 | 0x07c9462e |
Rationale
This Meta EIP provides a global view of all changes included in the Fusaka network upgrade, as well as links to full specification.
Security Considerations
None.
Copyright
Copyright and related rights waived via CC0.