Overview

Block Commitment is the second of Truestamp’s two commitment events: the hashes of finalized Truestamp blocks are batched into an epoch, one Merkle tree is built over those block hashes, and the single epoch root is recorded on a public blockchain, as a Stellar transaction’s memo hash (MEMO_HASH) or as Bitcoin OP_RETURN data. Each covered block receives a compact inclusion proof tying its block_hash to the epoch root, and the block transitions from finalized to committed on the first successful public-chain commitment. Because the public chain’s record is timestamped by a network Truestamp does not control, Block Commitment is what lets a proof be checked without trusting Truestamp; it complements Item Commitment, which binds an individual item to a block. The batching mechanics are covered in the epoch and Block Commitment, and the two-event distinction in Item Commitment vs Block Commitment.