PSC
cryptographic contract format
Petoron Seal Contracts (PSC)
Fully binary .psc contract format
TTL (time to live) built-in
Ed25519 participant signatures
Executed-flag to prevent reuse
External .sig signature support
Fully offline and P2P-ready
Compatible with Petoron Time Burn Cipher (PTBC)
https://github.com/01alekseev/PSC