thumb|European mink (Mustela lutreola) Mink are dark-coloured, semiaquatic, carnivorous mammals in the genera Mustela and Neogale and part of the family Mustelidae, which also includes weasels, stoats
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 0xb0d0b04717dfe80ed23624fa59371e4183fb99d9c9abcf091dee54d95f3f3750. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/97dace1f-60d2-4154-af12-058b0dc0281e.json and https://artists.proofprofile.net/proofs/artist/97dace1f-60d2-4154-af12-058b0dc0281e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).