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Alejandro

Verified account Sei

@alranpe

Protocol Researcher @Sei_Labs. Ex
@protocollabs.
Blockchains PhD graduate by @Sydney_Uni.
Joined October 2017
683 Following 643 Followers 1.3K Posts

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Alejandro Verified account @alranpe
Inside you there are two wolves.
One builds trustless systems, permissionless, verifiable, no privileged operators.
The other slaps "decentralized" on a multisig with 3 keys held by the same team.
The one that wins is the one you fund.
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Alejandro Verified account @alranpe
Secret single-leader election is hard. An adaptive adversary can crash the leader in single-leader consensus if the leader is not hidden.

A very interesting result by @ittaia et al. fix this with Multi-Leader Fixed-View Simplex: k leaders propose, everyone votes on the set of proposals they saw, then a threshold beacon reveals a random priority order after voting and each vote resolves to its highest-priority proposal. This is kind of similar to what we did at what we then called asynchronous Granite back at Protocol Labs (and ended up being psync GossiPBFT).

Two leaders already give you ≥½ chance of finalizing a good view against one mobile crash (expected ~6Δ). Structure stays basically Simplex.

They also check the rational case (leaders delaying for MEV). Second leader drops view-failure rate from ~1% to 0.01% at equilibrium.

arxiv.org/pdf/2611.01323
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Alejandro Verified account @alranpe
I love consensus analysis in the context of (k,t)-robust equilibria. In a future where validators must be KYC-ed (to prevent bots), more safety cannot come throwing more virtual entities to a protocol that can handle them, it comes from safer protocols.
Vincent Gramoli Verified account @VincentGramoli 6d
Do you know what STAKE stands for in the context of blockchain? Secure and Tolerant Algorithm through (K,t)-robust Equilibrium (STAKE), a new blockchain algorithm that does not suffer double spending attacks despite a coalition of 2n/3 hackers.
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