nexio

Nexio is a parallelized rollup for Bitcoin built on the Movement SDK that supports both MoveVM and EVM contracts. Execution moves off the Bitcoin base layer: the rollup processes non-conflicting transactions in parallel and anchors state roots back to Bitcoin, with zero-knowledge proofs attesting state transitions. Cross-chain custody uses MPC threshold signatures rather than a single multisig key, and a Fractal interpreter translates asset semantics between the UTXO model and account-based chains.

Its users are developers bringing DeFi, gaming and NFT applications to Bitcoin, with Aptos Move, Sui Move and Solidity compiling in one environment and assets mapped between UTXO and account addresses. Against EVM-based Bitcoin layers it uses Move's resource model to express ownership; against sidechains its security rests on proofs and anchoring rather than an independent validator set, and tooling plus liquidity follow the Movement stack.