the whitepaper
the security model, with the math attached.
Lattice is a proof-of-stake layer-1 whose entire signature stack is lattice-based. the whitepaper formalizes the claim: there is no known quantum algorithm that breaks ML-DSA-87 or ML-KEM-1024 in fewer than 2^128 operations.
the full paper covers the consensus, the key formats, and the migration story for classical chains.