Blockchain Sign is a one-stop platform helping businesses with online document signing and auditing contracts. Users are allowed to sign on-screen using online web addition as well as mobile app, helping organizations save significant time handling complicate paper printing, signing and scanning process. The platform provides end-to-end document signing, biometric authentication, permanent preservation on blockchain. Together, these features make signing process more efficient by making use of cryptographic encryption, face recognition, two-factor authentication and blockchain technology.