MPlookup: A Quasilinear Multi-Party Lookup Argument in Collaborative zkSNARKs via Four Sorts and a Multi-Point Evaluation

A lookup argument is a cryptographic primitive that allows a prover to convince verifiers that every element of a private query vector belongs to a public table vector without disclosing the underlying data. It can enforce correct instruction execution in zero-knowledge virtual machines and serve as an important supplement to zero-knowledge succinct non-interactive arguments of knowledge (zkSNARKs). However, existing lookup argument protocols operate exclusively in the single-prover setting and