UTXO programmability
for Bitcoin Bitcoin Cash Liquid Arkade Fractal

We design, build, and audit smart contracts and transaction protocols for Bitcoin-like systems.

01

Development

Covenant-driven contracts, transaction builders, and wallet flows, built with your team.

02

Consulting

Protocol and transaction-model design for Bitcoin and adjacent chains.

03

Audits

Manual review of scripts, covenants, and signing paths before funds are at risk.

Bring us in before the transaction model hardens.

info@sighash.xyz →