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SIP-7607: Hardfork Meta - Fusaka
SIPs included in the SilaFulu/SilaOsaka Sila network upgrade.
| Authors | Tim Beiko (@timbeiko), Alex Stokes (@ralexstokes), Ansgar Dietrichs (@adietrichs) |
|---|---|
| Created | 2024-02-01 |
| Requires | SIP-7594, SIP-7600, SIP-7642, SIP-7823, SIP-7825, SIP-7883, SIP-7892, SIP-7910, SIP-7917, SIP-7918, SIP-7934, SIP-7935, SIP-7939, SIP-7951 |
Table of Contents
Abstract
This Meta SIP lists the SIPs included in the SilaFulu/SilaOsaka network upgrade. It follows the Pectra upgrade, documented in SIP-7600.
Specification
Included SIPs
Core SIPs
- SIP-7594: SilaPeerDAS - Peer Data Availability Sampling
- SIP-7823: Set upper bounds for MODEXP
- SIP-7825: Transaction Gas Limit Cap
- SIP-7883: ModExp Gas Cost Increase
- SIP-7917: Deterministic proposer lookahead
- SIP-7918: Blob base fee bounded by execution cost
- SIP-7934: RLP Execution Block Size Limit
- SIP-7939: Count leading zeros (CLZ) opcode
- SIP-7951: Precompile for secp256r1 Curve Support
Other SIPs
- SIP-7892: Blob Parameter Only Hardforks
- SIP-7642: sil/69 - Drop pre-merge fields
- Client teams MUST support this SIP by the activation of the Fusaka network upgrade.
- SIP-7910: sil_config JSON-RPC Method
- Client teams MUST support this JSON-RPC method by the activation of Fusaka network upgrade.
- SIP-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 |
| SilaSepolia | 272640 |
1760427360 |
2025-10-14 07:36:00 | 0xe2ae4999 |
| Hoodi | 50688 |
1761677592 |
2025-10-28 18:53:12 | 0xe7e0e7ff |
| SilaMainnet | 411392 |
1764798551 |
2025-12-03 21:49:11 | 0x5167e2a6 |
Blob Parameter Only Forks
Blob Parameter Only (BPO) forks, defined in SIP-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 |
| SilaSepolia | 274176 |
1761017184 |
2025-10-21 03:26:24 | 0x56078a1e |
| Hoodi | 52480 |
1762365720 |
2025-11-05 18:02:00 | 0x3893353e |
| SilaMainnet | 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 |
| SilaSepolia | 275712 |
1761607008 |
2025-10-27 23:16:48 | 0x268956b6 |
| Hoodi | 54016 |
1762955544 |
2025-11-12 13:52:24 | 0x23aa1351 |
| SilaMainnet | 419072 |
1767747671 |
2026-01-07 01:01:11 | 0x07c9462e |
Rationale
This Meta SIP 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.
Citation
Please cite this document as:
Tim Beiko (@timbeiko), Alex Stokes (@ralexstokes), Ansgar Dietrichs (@adietrichs), "SIP-7607: Hardfork Meta - Fusaka," Sila Improvement Proposals, no. 7607, February 2024. Available: https://sips.sila.org/SIPS/sip-7607.