On Chain Data Attestation

Definition

On-chain data attestation refers to the process of cryptographically verifying and recording the authenticity and integrity of data directly onto a blockchain. This typically involves a trusted entity or a decentralized oracle network signing a data payload and submitting the signature, along with the data hash, to a smart contract. The immutability of the blockchain then ensures that this attestation is tamper-proof and perpetually verifiable. It establishes a verifiable truth source.