sigil-signing

What problem does it solve?

This Skill provides a secure method for signing blockchain transactions using Multi-Party Computation (MPC) where one party's key material is stored on a physical floppy disk, preventing remote compromise.

Core Features & Use Cases

• Secure Transaction Signing: Sign Ethereum and other blockchain transactions using a 2-of-2 MPC threshold signature scheme.
• Physical Consent: Requires the physical insertion of a Sigil signing disk for every transaction, ensuring an air-gapped security model.
• Bounded Damage: If a disk is lost or stolen, the attacker can only access a limited number of presignatures.
• Use Case: Securely sign critical DeFi transactions or multisig operations where the highest level of security is paramount, even in an untrusted environment.

Quick Start

Use the sigil-signing skill to sign a transaction with hash 0x1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef for chain ID 1 and description 'Transfer 0.1 ETH to vitalik.eth'.