HWT may refer to: Harvey World Travel, a former Australian travel agency franchise Health and welfare trust, a Canadian healthcare plan The Herald and Weekly Times, an Australian newspaper publish
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10cbb07ee1b3f975cb4df7a505c4e88c579aea911fa3ee1ad7106d394b38ea94. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8aacfcc2-7590-4676-8572-0f3778146398.json and https://artists.proofprofile.net/proofs/artist/8aacfcc2-7590-4676-8572-0f3778146398.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).