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Key Takeaways
- Devnet-9 pairs a fork with failure testing.
- Finality needs two-thirds of staked ETH.
- Blocks can continue during a finality stall.
- The inactivity leak can restore finality.
- The drill is confined to an isolated devnet.
The real test begins after Gloas activates
Ethereum’s published Glamsterdam devnet-9 specification gives developers two jobs in sequence. They must first complete a clean Gloas transition, then deliberately take validator participation below the threshold required to finalize checkpoints.
The Gloas fork was scheduled for September 2 at 15:00 UTC. The same specification describes non-finality as the devnet’s second testing objective, but does not confirm that this phase has started or finished.
The first stage matters because Gloas must apply to a large pre-fork state created at genesis, rather than one grown over days of block production. The second stage asks a harder qu...
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