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 0x3fb1414fa1a50bd6d309d2bfb610d661cdd3b5df53a1f635b240c73f74197ccb. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e3db7c0d-5371-4809-bb9f-ed3c0673f682.json and https://artists.proofprofile.net/proofs/artist/e3db7c0d-5371-4809-bb9f-ed3c0673f682.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 0x7ebc410669e39fc1aa2c7a27feea8b87ac6d6865254868d7d05a3d227bc935b7. 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/BE2GN2000201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x441864d9f4141e889036e17b14352261ab34e29922cf99f58c465f989ee6b133. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/BE2GN2000202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0304f898b83ae4320a75f0b2553af987c3624d7b3f9590ebc6e3fa2d0fa0909. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BE2GN2000203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769df0a086ed5a08fb5c08b93920f8bf8fa40a326e9ce0efa4e51dfae5d59971. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/BE2GN2000204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6778ff36f33cfedee32dc84e283c0d0ac9ef556e9148c7c94af7f9ac58de99e. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/BE2GN2000205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf559de7b6e407e027b07eea03d053b6287510ef051297b2cd16904150bce70c4. 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/BE2GN2000206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34af90496f5ae9f40aaf7adcdd1f876ee7ab9ae2cbed3d30cd4ca331a71d8e2c. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/BE2GN2000207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e5c7082427366313ff86988d04fdee1659e5bcbbce99810010ab24814f925b. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/BE2GN2000208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3042fe077cd2832478ec062d164bd18008b1f0d55f060b2c50a2813ff2a3d909. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/TR0331209127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f3d9265c0397b69f7d0bfb3288fb8a439ddab1c382c11d736b476ea77410ef. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/TR0331007769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0182512965b3d9bd930cfc3889137140fde0ee30fe096d621cb71b5cf2870b5f. 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/FRZPA1421720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c9c5334a4bcc6bce7402349cb5fa16b3fd34f1fa5f04726ca91016e9a23e21. 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/FRZPA1421750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e4e03b0cdb0673bcc32b180e41c4d10dcd060f006a52d40d8b90f358392793. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/FRZPA1421790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3fdfcbcde19c564fce80ebd787bae68cbaa7688cd0e5041d4db9f8fcc9d9235. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRZPA1421810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2689614eb1b30285faf05d5d07978b1ecf323e703cde5905ca73adadf2759b1e. 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/FRZPA1421820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5294d3729a99261a7d138e59e1ff1b151ca85940d21a6d630a70764b39186767. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/FRZPA1421830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec7aada9e12bf5a2d469641c45bfd92db3de38bae800073522bc4bb3bfd10b5. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FRZPA1421840.
The Book of Lovers / Classical Ottoman Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf0ab08083cb2a5c01bcb1d3efa302a8ff6af580eec037f99d5bf8bc088a1c3. 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/BEE641717714.
Türk İslâm Mûsikîsi Külliyatından Tevşihler, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62f5243d37cd27dcfa62d65818a19dc50af64b011bdda032fc0695200368ac9. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/TR0240703037.
Bir Muazzam Padişahsın Ki Kulundur Cümle Şah
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307aa4ea8b8ceb80feb29433980e7a3cb845ec1f67c84aef94a112425bdd97c9. 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/TR0240703038.
Gönül Fikr-i Hayaline Sabahlar Ya Rasulallah
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5346c57cd95538ade5ca7202bd5f265bea48e3d3a1c749a59bf15a8426a4cdea. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/TR0240703040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f68b6b792f34f64aa35b092860cf0cb0574e2bcc19dff14391c4f4b1ad9bcba. 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/TR0240703041.
Eğer Halk Etmeseydi Zatını Hakk Ya Rasullah
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04264c059bf3029f7206956fa37ef07598f936ea020f315d2537a21596ed5576. 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/TR0240703042.