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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b72ecccc206d86146004362a65d1234343beb9d583fe8408ca7bddbeddd0835. Chain 2 (Bitcoin): anchored in block 953938 (2026-06-16T11:35:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/20924374-515e-4463-9709-2aed054a4a17.json and https://artists.proofprofile.net/proofs/artist/20924374-515e-4463-9709-2aed054a4a17.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Music for Moments of Slow - Awesome Jazz Quartet
Sophisticated Latin Trumpet - Ambiance for Unwind Hours
Music for Relaxing Journeys - Number One Soprano Sax Solo
Music for Nocturnal Acoustics (Jazz Quartet)
Chilled Music for Relaxing Journeys - Soprano Sax Solo
Music for Slow Dawn - Cheerful Latin Piano Jazz
Refined Music for Breathing Shapes - Latin Piano Jazz
Contemporary Music for Chill Out Shapes - Latin Piano Jazz
(Latin Piano Music) Music for Morning Coffeehouses
Easy Listening Piano - Background for Free Relaxation
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6889c2a953a00a570640ebece633856e066faaffdb3577e854ad7a4ca84ba6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR33T1740801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f581a30e1669cef00ed1e4d87b064bf7fb4026f8a7476b3c75874143dfad08a. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/FR33T1740802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb712c8b799a60b743f8650405e4831af36bb46eb33b3b4533850bf94a437a2fd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR33T1740803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527c92f5a6b989b0065b3218e920ccdace4c31f33054ac7ee8dc1c22b83371c8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR33T1740807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210fb4ba43e20bca21b4c93b2b11f334eca1d5f3e2659ba0dd4aa6bd548616cc. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/FR33T1740808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53806c644d8ea4ec2502e467e1219c850eb98ef49d6ee9e1247d51c77092f5fa. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR33T1740809.