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 0x46bd3504c6d385abdcdc5544fee7c785d2bf8dde445d55be2b8d36c8795f5e1c. Chain 2 (Bitcoin): anchored in block 954553 (2026-06-20T11:51:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/abc58343-8914-47ad-8686-a326209d3a6f.json and https://artists.proofprofile.net/proofs/artist/abc58343-8914-47ad-8686-a326209d3a6f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Music for Chill Tuesday - Exquisite Big Band Ballad with Guitar
Bubbly Background Music for Seasonal Feelings
Music for Spring Work Mode - Trumpet, Soprano Sax, Tenor Sax and Guitar
Guitar Bossa Nova - Music for Resting Aprils
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 0x55e8219022d200240a7c4dc3ae945bf4790afa33b0b64f25c2b294287d1a6c29. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:20:25Z), 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/AUC1F6892038.
Simplistic Bari Sax Jazz - Bgm for Hidden Chances
Smart Music for Jazzy Nature - Jazz Quartet
Opulent Piano Bossa Duo - Ambiance for Daily Moment
Bossa Nova Piano Duo - Background Music for Chilled Minutes