sigil-signing

MPC signing with floppy disks secures transactions by storing one party's key material on physical media, creating an air-gapped barrier. This requires physical disk insertion for every signature, preventing remote compromise of your blockchain transactions.

To sign an Ethereum transaction, ensure the sigil-daemon is running and insert a physical Sigil disk. You then provide the transaction hash, chain ID, and description to generate a 2-of-2 MPC threshold signature.

Yes, air-gapped MPC transaction signing requires the sigil-daemon to be actively running. You must also have a physical Sigil signing disk inserted to authorize the presignature management operations.

If an MPC signing disk is lost or stolen, damage remains bounded. The attacker can only access a strictly limited number of presignatures, protecting the overall air-gapped wallet system from total key compromise.

Use physical media for crypto signing when executing critical DeFi or multisig operations that demand maximum security. It enforces physical consent through an air-gapped model, which is ideal for untrusted environments where remote compromise is a risk.