Proof of identity (PoI) is an identification systemAn identification system is a set of rules to identify individuals or objects. In the context of PoI and blockchain,... that allows blockchainAs a distributed ledger technology (DLT), a blockchain is a digital ledger that can create an immutable record of transactions.... users to prove their digital identityA digital identity is an online or electronic identifier used to represent a person or entity (for example, to confirm... in a secure and tamper-proofTamper-proof refers to the immutability of data on a blockchain ledger. Blockchains utilize cryptographic hashing and consensus mechanisms, making it... manner. PoI systems usually involve cryptographic signatures or biometricsBiometrics identifies an individual based on unique physical or behavioral markers. to authenticate transactions on the blockchain or provide access to encrypted data.
