A Public Key Infrastructure (PKI) certificate is a digital credential that binds a user’s identity to a public key. In cryptocurrency, this certificate plays a crucial role in ensuring secure transactions and communications.When a user wants to conduct a transaction, they utilize a pair of cryptographic keys: a public key, which can be shared, and a private key, which must remain confidential. The PKI certificate verifies that the public key belongs to the right user, helping to prevent fraud and unauthorized access.PKI certificates are issued by trusted authorities known as Certificate Authorities (CAs). These entities confirm the identity of the certificate requestor before issuing the certificate, thereby establishing trust. In summary, PKI certificates enhance security by ensuring that parties involved in a transaction are who they claim to be, thus enabling safe and reliable interactions in the cryptocurrency landscape.