thumb|upright=1.2|White-backed vulture (Gyps africanus), lappet-faced vultures (Torgos tracheliotos) and marabou storks (Leptoptilos crumenifer) feeding on hyena carrion thumb|upright=1.2|A crab-eatin
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 0x99a881dc5abddba6b7b691796d880f483c91250bc8528afd3ff60d5a4b247db4. Chain 2 (Bitcoin): anchored in block 954573 (2026-06-20T15:45:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b415be5b-1e2d-4fe1-8450-22745db9b004.json and https://artists.proofprofile.net/proofs/artist/b415be5b-1e2d-4fe1-8450-22745db9b004.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).