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 0xd70fa72ce66776100a1c19289ed447aaa25cbbcc1ce74654683eb2e50bbf489a. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2a27e476-c28d-42b4-a98a-bdebf76f22af.json and https://artists.proofprofile.net/proofs/artist/2a27e476-c28d-42b4-a98a-bdebf76f22af.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Christian Music: Spiritual Gospel Music and Relaxing Instrumental Piano Songs for Church, Wedding Music, Dinner Music, and More…
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 0xb41f899ef7109bffc9522bfa6d72d250b1d23eb3c1f8de7224055b0c0cd5fe41. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:42:42Z), 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/TCABQ1360344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7320fcd09bde605791362492900cbf42794e86cedb4d64d8b5dec352e3225b. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/TCABQ1360345.
Peaceful Dreams: Calming Tunes for the Night
Nighttime Lullaby Serenades for Baby Sleep
Relaxing Tunes for Cats: Gentle Melodies