right|250px|thumb|Wooden loom in Lesbos, Greece. thumb|A treadle-driven Hattersley & Sons Domestic Loom, built under licence in 1893, in Keighley, Yorkshire. This loom has a flying shuttle and automa
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a59782c34c59d17af7e49ef65da99966d5695f39cf7cbe49926983de2cc8ae. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3c441661-b855-4a1f-8f8d-c556ee906a39.json and https://artists.proofprofile.net/proofs/artist/3c441661-b855-4a1f-8f8d-c556ee906a39.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).