About

About Fairseq

Fairseq is building the foundation for cryptographically provable transaction ordering. Standard zkVMs prove what was computed. Fairseq proves when, using Verifiable Delay Functions (VDFs) anchored to a time beacon network, so protocols can prove FIFO fairness with certainty.

Why it matters

Fair ordering reduces MEV uncertainty, makes sequencing verifiable by anyone, and improves user trust in L2s, DEXs, and DeFi aggregators.

How we do it

We combine fast proving, time anchoring via Lighthouse epochs, and clean developer ergonomics in a Rust SDK, plus optional hosted proving for teams that want it.

Our story

Why we built Fairseq

Blockchain protocols have long claimed fair ordering, but claims aren't proof. Fairseq was built to change that: cryptographic evidence that transactions were sequenced fairly, verifiable by anyone.

Brand Promise

Fair by proof, not promise.