One or more non-transitory computer-readable storage mediums storing one or sequences of instructions, which when executed by one or more processors, causes a method for generating a secure digital vaccination certificate for a user using a cryptographic hashing and storing the digital vaccination certificate on a smart contract by a decentralized blockchain, wherein the method comprises,
- processing, by an identity validation server, personal details and biometrics of a beneficiary from a first user device associated with the beneficiary;
- storing, the personal details and the biometrics of the beneficiary in an off-chain database that is external to the decentralized blockchain;
- generating, by the identity validation server, a registration token for the beneficiary using the cryptographic hashing, wherein the registration token is generated based on a first hash of the beneficiary, wherein the first hash is determined, using the cryptographic hashing, based on the personal details, an identity (ID) of the beneficiary, and biometrics of the beneficiary provided to the identity validation server;
- storing, by the decentralized blockchain, the registration token of the beneficiary as a second hash in the smart contract within the decentralized blockchain using the cryptographic hashing as proof of registration of the beneficiary on the decentralized blockchain, wherein the registration token is used as a key for associating records or information of the beneficiary with their identity on the decentralized blockchain, wherein the decentralized blockchain further comprises an address of a database of a plurality of authorized vaccinators;
- authenticating at least one vaccinator associated with at least one second user device, using a driver algorithm by verifying an address of the at least one vaccinator in the database of the plurality of authorized vaccinators within the decentralized blockchain;
- receiving, by a plurality of second user devices associated with the plurality of authorized vaccinators, a digital request through the first user device associated with the beneficiary, wherein the registration token is provided to the first user device associated with the beneficiary, wherein the digital request comprises at least one of (a) the registration token, or (b) the biometrics;
- validating, by the decentralized blockchain, (a) the digital request of the beneficiary by (i) authenticating whether the biometrics of the beneficiary associated with the digital request are valid using an authentication algorithm, and (ii) checking whether the second hash of the registration token of the beneficiary exists in the decentralized blockchain using the cryptographic hashing, and (b) the plurality of authorized associated with the plurality of second user devices using a driver algorithm;
- sending, by the decentralized blockchain, a message to the at least one authorized vaccinators associated with at least one second user device to initiate the digital request to the beneficiary only if the beneficiary fulfils at least one condition;
- recording details of the beneficiary in the decentralized blockchain by the at least one authorized vaccinator after recording is completed against the registration token of the beneficiary;
- generating, by the decentralized blockchain, the digital vaccination certificate for the beneficiary by creating a record of information for the beneficiary in the decentralized blockchain when the beneficiary receives a verification by the at least one authorized vaccinator;
- updating the decentralized blockchain by recording vaccination details of the beneficiary linked to the registration token and ID of the beneficiary, and storing vaccination statistics in the smart contract comprising hashes of the registration token and the digital vaccination certificate;
- and
- verifying, by verifiers, the digital vaccination certificate of the beneficiary using a blockchain-based distributed ledger algorithm to calculate a hash of the digital vaccination certificate to match the hash of the digital vaccination certificate of the beneficiary stored on-chain in the blockchain.