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 0xe6ace7983795e9313d40bda9f05f1718a1b57d4803b1cabe6607aa1265fc40af. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1e15c9a2-6662-427a-8a87-260516cac2e8.json and https://artists.proofprofile.net/proofs/artist/1e15c9a2-6662-427a-8a87-260516cac2e8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Little Women (Original Broadway Cast Recording)
Little Women - The Musical (Original Broadway Cast Recording)