Register or registration may refer to: Arts, entertainment, and media Music Register (music), the relative "height" or range of a note, melody, part, instrument, etc. Register, a 2017 album by Tr
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 0xef9a5c36b9a761c05d4336284a5d6de5e0e1441cccaf7e3a4a933cf8fda7d309. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a88ac4bd-79c3-4b7f-809c-7f3a9142c6d6.json and https://artists.proofprofile.net/proofs/artist/a88ac4bd-79c3-4b7f-809c-7f3a9142c6d6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).