thumb|The giants Fafner and Fasolt seize Freyja in Arthur Rackham's illustration of Richard Wagner's Der Ring des Nibelungen. thumb|Giants Mata and Grifone celebrated in Messina in August, Sicily, Ita
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 0x35928cd8ed3589986d91625fca4d69c458dc3d058bd8b735b4d34e99bf9ffd0e. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cb80ae4f-becf-43ca-985e-4008478680f1.json and https://artists.proofprofile.net/proofs/artist/cb80ae4f-becf-43ca-985e-4008478680f1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).