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Steve Degosserie 063773eb05
fix: 🔨 Update Snowbridge Ethereum network configuration with correct genesis hashes and fork versions (#310) 
## Summary

This PR fixes the Snowbridge Ethereum network configuration across all
three runtimes (Mainnet, Stagenet, and Testnet) by replacing placeholder
genesis hashes with correct values and updating fork versions to match
the target Ethereum networks.

### Changes Made

#### **Stagenet Runtime**
- ✅ Updated genesis hash from `[3u8; 32]` to Hoodi testnet genesis:
`0xbbe312868b376a3001692a646dd2d7d1e4406380dfd86b98aa8a34d1557c971b`
- ✅ Fixed chain ID from `3151908` to `560048` (Hoodi testnet)
- ✅ Updated fork versions to Hoodi testnet configuration (0x10000910
series)
- ✅ Added Fulu fork at epoch 50688 (activated Oct 28, 2025)

#### **Testnet Runtime**
- ✅ Updated genesis hash from `[2u8; 32]` to Hoodi testnet genesis:
`0xbbe312868b376a3001692a646dd2d7d1e4406380dfd86b98aa8a34d1557c971b`
- ✅ Updated fork versions from Holesky to Hoodi testnet configuration
- ✅ Added Fulu fork at epoch 50688

#### **Mainnet Runtime**
- ✅ Updated genesis hash from `[1u8; 32]` to Ethereum mainnet genesis:
`0xd4e56740f876aef8c010b86a40d5f56745a118d0906a34e69aec8c0db1cb8fa3`
- ✅ Updated fork versions from Holesky to Ethereum mainnet configuration
(0x00000000 series)
- ✅ Added Fulu fork at epoch 411392 (scheduled for Dec 3, 2025)

#### **Core Updates**
- ✅ Added `fulu` field to `ForkVersions` struct in
`snowbridge-beacon-primitives`
- ✅ Updated `select_fork_version` function in ethereum-client pallet to
handle Fulu fork

### Technical Details

**Hoodi Testnet (Stagenet & Testnet):**
- Chain ID: 560048
- Genesis:
`0xbbe312868b376a3001692a646dd2d7d1e4406380dfd86b98aa8a34d1557c971b`
- Fork versions: Genesis (0x10000910) → Altair → Bellatrix → Capella →
Deneb → Electra (epoch 2048) → Fulu (epoch 50688)
- Source: https://github.com/eth-clients/hoodi

**Ethereum Mainnet:**
- Chain ID: 1
- Genesis:
`0xd4e56740f876aef8c010b86a40d5f56745a118d0906a34e69aec8c0db1cb8fa3`
- Fork versions: Genesis (0x00000000) → Altair (epoch 74240) → Bellatrix
(144896) → Capella (194048) → Deneb (269568) → Electra (364032) → Fulu
(411392)
- Source: https://github.com/ethereum/consensus-specs

### Why This Matters

The Snowbridge light client relies on accurate Ethereum network
parameters to verify consensus proofs. Incorrect genesis hashes or fork
versions would cause signature verification failures and prevent the
bridge from functioning correctly.

### Fulu Fork Support

The Fulu fork (part of Fusaka upgrade) adds a `proposer_lookahead` field
to BeaconState but does **not** change generalized indices for sync
committees or finalized roots, so it reuses Electra's configuration
constants.

---------

Co-authored-by: Claude <noreply@anthropic.com>
Co-authored-by: undercover-cactus <lola@moonsonglabs.com>
2025-12-02 12:49:18 +01:00
..
fixtures test: init benchmark infra (#110) 2025-08-06 13:44:42 +02:00
src fix: 🔨 Update Snowbridge Ethereum network configuration with correct genesis hashes and fork versions (#310) 2025-12-02 12:49:18 +01:00
tests Add Snowbridge Inbound Queue V2 pallet (#32) 2025-04-18 20:28:00 +00:00
benchmark.md Add Snowbridge Inbound Queue V2 pallet (#32) 2025-04-18 20:28:00 +00:00
Cargo.toml feat: ✨ Bump client version to v0.3.0 & runtime spec_version to 300 (#224) 2025-10-11 00:38:19 +02:00
README.md Add Snowbridge Inbound Queue V2 pallet (#32) 2025-04-18 20:28:00 +00:00

README.md

Ethereum Beacon Client

The Ethereum Beacon Client is an on-chain light client that tracks Ethereum consensus using the beacon chain.