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 0x197ffab591fca9c4e1214692131025565f7d593a415f0eb535324f94cbffa945. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/503b5ae4-78c3-48f0-86f7-5dba35af2ba7.json and https://artists.proofprofile.net/proofs/artist/503b5ae4-78c3-48f0-86f7-5dba35af2ba7.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587110246780a6b877951d200dcbb944aedf4e8cd399df63f258494fd4f03636. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBKQU2347951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9d19214671c2248d097609ab8f7a040d2763ac3ccd77321fc10512333ca5fb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMDA62267147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed6846114cd9bc6bbe0d21fb751bf496e1dd28e6a7485f2e6de7ff78901f675. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBLV62402661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5892b8281a9ef42051658d69e919355c5207a1d427ccb504367a4902dd8550e2. 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/NL3M12412390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8694cb2f1053b2f7eacb19c90671d5d0882c9bdd1030c37f51b25020911bf3. 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/NL3M12412442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9d4d02fb3e4e56ea8aed205c610a743cd3f0f3fdbe7777ead6ebc6fbafa3d4. 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/NL3M12412398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13ee6f543557af76bb2604b30c2d5b41bc28c39999ff3608755b4eeb4260b7c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBKQU2517821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44ad7d7c4fc82b780103c652b4975b2dec86017a6ed24acc45927f15c2c1063. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBKQU2477928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba606bbb394f6d25a5e947bd1fc0258d3423495bdd0df3978d1014578cdd776b. 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/GBKQU2474515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbcc40c37686d4418aab63235b2512162e3a867432b2ec32105eae39f90925f1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBKQU2455825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d789ffb7beb5fd6010a2d412530c1571bd30f47d995880100020d4e479b19a. 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/GBKQU2435717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a256667e05f2a4b8e7894c6bd79cdec7fcf9fdc4d2c613372433a760d6a134. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBKQU2436142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd8df1cd93228cf509a3adbe2addb14bbe50d33bc30cd303270ac542a273370. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBKQU2405588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ef78125ff2309d98d84ea68f9bbd2b3dfaadbcba695a6535286881fda11db7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBLV62322441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b3c458f649fdc8cfbf7189315d1aa25a736dcfb7c0f277f35313972bde43d20. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBKQU2385420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4a309cdd43e3b47145c69f9915acf7232fa41c05a66bcb177685f3af1e7b2f. 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/NL4WT2300271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba71ba1db739a0dd49935eacd17b2fc919c556a48af8a15c293409619a7db5dd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBKQU2383010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6adae0fd5e97fb521bd65cee422461d91853ec60dcd343c9eb8f52c1b35de2b0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBKQU2371404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19413baba1dc827afbfc1b2987e9dd8fcf94caf3502d40f26931a9a84a3f5c41. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBKQU2358200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8cc3c5d1f5ad9b611a53f831e25ab77bc76fd5dfb1115e0608dccc0a3b55d3. 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/GBKQU2336393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21438801d0aa88868dc6a67ba63dba1bf613f6824ef446446cfa9ff6893ac177. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM4TX2316247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97d5423f3aa89dcdca33ba32f18e7058a376c225433994a10d6200c418cdd13. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM4TW2343765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4cae2e3e3db652dd7baf47dad74c51d630393e29c91f2a42110918cc2513cc8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMDA72257482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9b8c8ba658e38f51e03098addc99bbf65ef6b8d119508f9ea327e6410f1759. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMBZ92266938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb567ef3d49c6319932e8419dabf276c46ef2ad753d8934fa6b66909f2274e43d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM6N22276190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3887b436a467b2ae28c3caef517fceab216c8c04839e7abbf5cd76453033f81f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM4TX2234763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89613627a038861e4cf48fade016c30488edcad2d73b750c7f5d4b6440f3a9b1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM4TX2284838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf018446aef80725a37edeaf8db78ff1eb935110bdc088efdb32d67cfcfe1a25f. 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/QM4TW2284704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5247a28723393b60f7c50f87ca325991bb47d23fea35c34a7db7a20289a6465e. 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/QM4TW2217843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59bc41ba6d569bd9a14778392fd644bfa67e9d73cc4525689538e00ef9106155. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMDA72193514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed4a0dd4754609f74f4224d163afb5a2dc4cc0497e62a7ee0ccea5df5952c21. 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/QMDA62189055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0cd647e523b155dca2ac06825d8047eda14bc4317b1377e599b4b217b76f83. 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/QMFME2193880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a7daccc6dad6b19cd873008afe9c0c091b28e251654d9b380b63088be64d13. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMFME2186427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26260cd5a6ca691415cd2da963dbc9a6e49eb36c3695ff3a7467d5731722f34. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6N22188709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba6d9f3730b029f12dc280e48212a68cb5d3894a2bf48c6719ed828e23b2abd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6N22188652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3831a1fe36e096865a1b96db7cbec071054a0092748884a48ef4bb3d4db1b814. 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/QM6MZ2133723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3193e627847cbdbb84f5169500a040f373d43d651266a4ccfa82158d2783abfc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM4TX2199874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59baed770c83d57fdebe484e9c2c881c284234be7f068fdad9a32ce4251f5e69. 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/QM4TW2153371.