A sinner refers to a person who commits a sin. Sinner or The Sinner may also refer to: People Carl Ahasver von Sinner (1754–1821), Swiss architect George A. Sinner (1928–2018), American politici
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 0xb867e92d4c8beca2549bd29c420e7ed797daa1ccee9ecde08763358128c7278f. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/330a90f9-b7b7-4acf-9986-f932ce56a00a.json and https://artists.proofprofile.net/proofs/artist/330a90f9-b7b7-4acf-9986-f932ce56a00a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).