Most reliable third-party electronic signature platforms can lock the real identity of the signature subject, effectively prevent file tampering and accurately record the signature time;

Multiple real-name authentication technologies such as face biometrics and bank card elements ensure that the electronic signature is exclusive to me.

Encrypt login, reserve the random dynamic password of mobile phone, and ensure that the signature behavior is controlled by the signer.

The national authority issues the CA certificate, and ensures the uniqueness of the fingerprint of the certificate, which makes the tampering invalid and can identify the authenticity and validity of the signature.

The authenticity of the contract can be verified by converting the contract file into a tamper-proof PDF and stamping it with the time stamp of the National Time Service Center.