Action Items
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Fusaka Devnet-3 Stability Testing
- Finalize debugging MEV-related issues and other client-specific bugs.
- Run “perfect progress” and non-finality tests; aim for stable participation above 94%.
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Finalize Decision on Transaction Gas Limit Cap (EIP-7825) on August 4 (ACDT)
- Currently capped at 16.8M gas per transaction; community concerns raised on Ethereum Magicians regarding breaking existing dApps.
- 0x highlighted DEX aggregator limitations; additional analysis forthcoming.
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Confirm Fusaka Upgrade Schedule by August 7 (ACDC)
- Client teams to confirm preferred testnet order (Holesky, Sepolia, Hoodi) by next call; consider non-finality testing on Holesky.
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Evaluate Custody Balance Parameter Adjustment (Consensus-spec Issue #4477) by August 7 (ACDC)
- Proposal to increase BALANCE_PER_ADDITIONAL_CUSTODY_GROUP from 32 ETH to 128 ETH.
- Impact on home stakers and fractional staking products (Lido CSM, Rocketpool).
- Default decision is to defer from Fusaka; potential inclusion via future Block Parameter Override (BPO).
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Block-Level Access Lists (BAL) Considered for Inclusion (EIP-7928, PR #10083)
- Community consensus favors BAL as EL headliner for Glamsterdam fork (Ethereum Magicians feedback summary).
- Benchmark “read+write” vs. “write-only” variants; report findings to determine final specification.
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Finalize CL Headliner Decision (ePBS vs. Delayed Execution EIP-7862) by August 7 (ACDC)
- CL community to choose between enshrined proposer-builder separation (ePBS) and delayed execution (EIP-7862).
- Conditional support indicated for BAL as EL headliner if ePBS is chosen.
Detailed Summary
Fusaka Devnet-3 Status
Devnet-3 stability improved, reaching ~94% participation. Ongoing debugging of client-specific and MEV-related issues. “Perfect progress” and non-finality tests planned shortly. Lighthouse and Nimbus to flag unresolved bugs before RC release.
Transaction Gas Limit Cap (EIP-7825)
Extensive debate over the proposed 16.8M gas cap. Community members, particularly 0x, raised concerns about breaking existing DeFi aggregation use cases. Proponents highlighted benefits such as DoS mitigation and improved parallelization. Vitalik Buterin and others emphasized long-term advantages for client design simplification and potential future enhancements (e.g., multidimensional gas pricing, stateless clients). Additional analysis from affected dApps (notably DEX aggregators) requested; decision to be finalized during the August 4 ACDT call.
Fusaka Rollout and Testnet Schedule
General consensus on target schedule: client binaries by September 1, 2025; Sepolia, Hoodi, and Holesky forks sequentially through September and October; Mainnet by mid-November. Holesky identified for potential non-finality testing; client teams requested an additional week buffer for adversarial testing. Teams to confirm the preferred sequence by the August 7 ACDC call.
Custody Balance Parameter Adjustment
Discussion around increasing custody group balance threshold to 128 ETH (consensus-spec issue #4477). Concerns raised about impacts on home stakers, particularly regarding fractional staking and validator consolidation. Given complexity and timing, the decision deferred to future upgrade considerations, with further discussion at the August 7 ACDC call.
Glamsterdam Headliner: Block-Level Access Lists (EIP-7928)
Strong community and developer consensus resulted in BAL being Considered for Inclusion (PR #10083) as the EL headliner for Glamsterdam. Benchmarking needed between variants including/excluding read-locations. Conditional commitment pending final CL headliner decision.
CL Headliner Debate: ePBS vs. Delayed Execution (EIP-7862)
Deep debate between enshrined proposer-builder separation (ePBS) versus delayed execution (EIP-7862), which defers state root computation. Considerations around complexity, L1/L2 interoperability, and the “free option” problem discussed extensively. Consensus-layer teams to finalize choice at the August 7 ACDC call, with conditional commitment to BAL if ePBS is chosen.