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 0x39bfb89400c38f5cad502c504a6c492d4f1eb7173af18ebac0f3d9d2e7d5b7d9. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c287b8bd-421f-4762-b66e-047d716735ae.json and https://artists.proofprofile.net/proofs/artist/c287b8bd-421f-4762-b66e-047d716735ae.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x25b142b9294e6f2777c61b0001ae509fc61b510153b799f2cc0920f76ee5c619. 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/US83Z2473122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71f5459b2268f1ebadacb83d878b8d70c0a54d881f651e6693b8e2ef61b9ea4. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/TCAIA2430851.
The Call - Lost Desert Tranquil Days Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034126e1681b3f8bc6b8f007af67976038516a8ec1eaadc8e9c53bf58e1dd1b1. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/US83Z2459425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f52b53d4be3232f4dc82bcd7cfcda523e872be1672f6a8fb41e071c4bc0ee16. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/US83Z1333895.
Sands of Goa - Hernan Cattaneo & SoundExile Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f02f7ce80361866b65d4c7dc2a910ad5f7dc6e1d4a70875c4e4d81a67137572. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/US83Z1208044.
Sometimes It Just Turns Into Reality - Michael Cassette Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b72a6e62e046edc6d22665141bdfcbba40efcc6bc17bc6a5201ed729199ec97. 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/US83Z1208047.
There Is Something Missing - Deepfunk Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977189bdcb2242487149e7c614cb017a5aae7f8089293b620670624a9f7fad46. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/US83Z1328471.
Losing Myself feat. Dhrithi - Alexey Sonar Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f1db6373cc9e28bc49597565e745db380699805eae2c83f4c12c379a62f6ab. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US83Z1106714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd43a306f9562d86ec0c2f4acf317571ad749f85648fc8cd59d6d475bb4bdbd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USLZJ2447476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008e1a04dfb798afc0aa5bada1a75e1bf3b79bc11a900a59e7a7b9a8c4e74730. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USLZJ2440909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e4ea1288aa358862864d89c84cf786cca59d37ce03730045df83105f13ed12. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USLZJ2447462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729e71761882aefa4df1b0ff2f08d17bb857f27ba6f377835ed7f1f085e4c908. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/USLZJ2447515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59823296b2bb5295b433f9949f0ea3118d4e6d5ce00c838ca8a3b9fcd7d67e72. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USLZJ2447505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a10a7c799913c5e80ce449a81cfb9fc35c4bbe3e88295a63cc606c5f821164. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/USLZJ2440900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e8c685d65a50a19bd07f2442b3b62d1df2e3038c0fb71e213d9a3af1ab3214. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USLZJ2440904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9c96e271f0f593c8fe9c071ddff6642a23f227556e5b1c87c7f18e1d786dda. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USLZJ2474879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79cb1a970b128303d5e3a0860a6e9e8eaaaec82e9103ccdeda124001628d04f1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USLZJ2474862.