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 0xd642526b3d055a951db4920d2840a4e760c050888b568f82fcfe5618e27a2cad. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/546a0244-ac19-4d93-8419-811beb67f7b7.json and https://artists.proofprofile.net/proofs/artist/546a0244-ac19-4d93-8419-811beb67f7b7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ultimate Spa Music Collection: Most Popular Songs for Massage Therapy, Day Spas and Relaxation
Lotus in the Moonlight: Nice, Relaxing Acoustic Guitar Music & Forest Streams
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1640beba8187545b59ea3f2a2b3f60903d91f6af1ddf68ea60d16337bdc76b. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:50:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM81499553.
Relaxing Variations of Canon in D (A collection of New Age, Ambient, Easy Listening and Classical Variations for Meditation and Relaxation)