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 0x416987ab597413215823086727f9045eeb8136afbb5a201088445d02452beff8. 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/c3a4ccdf-d3e2-48cc-92cd-33727744769c.json and https://artists.proofprofile.net/proofs/artist/c3a4ccdf-d3e2-48cc-92cd-33727744769c.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 0x2d2ae7ecd0414951f3d41344f593f4c01e79713142049409571292184366526c. 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/QMDA62219262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4260352afdf60e8a728f4d807cc95c6024ef27dede55d9860e2337bf5ea7bfa. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NLT2H2301079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fdd13962b9a353193929cb8796af61b698aae9bcf61dde36de8aa27f64ec9d3. 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/GBKQU2384926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd4251205fe655634d8e9b6804b3f9e5d6d6820124a370427a4fb5da15722638. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBKQU2391611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2f5eaa8ab20b9e923d635010a006c61ce3e4e0874bdd4e31551ee35fefaeff. 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/CA5KR2378446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028dad9295ce73e2de19b62ef6e0d877c1ecc5b03d3cc7a7d61e615907c32115. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLT2H2300688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd696d480db097b0c54528c64e92a7f4924b0b6e7964db2d105482b79e16560. 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/GBKQU2365620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b7749949cd343b9925c5efddb308533417829d6febf24a4b23a25d51fd5d44. 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/GBKQU2344745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92eafc1cc5fbeaf11717fff466b4e9a9bdb6a2a11a7399649aecee0dc50bbd8. 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/GBKQU2344739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf85ab4ba8a5a4db2be7c73b8f5587f940cf400652d94d26e502137c74e12f47. 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/GX8KD2376391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a609878579c64ba8477cd5e2a3c67a40543ec4380a2d8beb4458628a512813a. 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/DES232300150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff0011b1e4e9d7b891d969247c021bcc2ae0e1c6fb57647805c44043f417124f. 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/DES232300151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a13bc92a6ee157416a55d26e47e3dbf50ba2ceb451c54f3bb2d3df21770947. 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/GBKQU2319759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28905111b1c5acf417399df221e6714e85087d5ea0421bd87cb5eda91ec1bbb. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBKQU2303275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543eb03cae8bf36db4a00f8e0b2e875905f60f2b52e91ecc39b841d0eccd2a23. 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/QMDA72229617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce5dd393ed58368837e741bb592dc5cd70c91182f92dacbb8e7dc7eb4d4748e. 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/GBLV62214563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce5dd393ed58368837e741bb592dc5cd70c91182f92dacbb8e7dc7eb4d4748e. 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/GBLV62214563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543eb03cae8bf36db4a00f8e0b2e875905f60f2b52e91ecc39b841d0eccd2a23. 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/QMDA72229617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8084f093619868d30c0609b38b9af86abc7bee8bc272de24ed85a058e8d8991. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DEXO52257562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1379800d079322008ea3b8a1f2f0b647c1c34d7f96cb701ee2482e6546443e5. 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/QMBZ92256573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b11a099ca45792a9581d9734b66b3a7af6eb8ae231b95bf5298ddcca994958c. 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/DEXO32235010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea2f322520914b6fdc54f47b435411b191e6282ba34f763a16afc635b41ba21. 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/NLT2H2200551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101bdddc2fb9a3a4aeae65c7faace803a472d3ae5efa8824b57d8ec549079df3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH7812221714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2254645222c72f8ae45593ca0eb5b5ce6261f7776bfc08a742ebbb3326ba1a. 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/NL2QC2100675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa872c766d4de2dae414ecb5c78953bf30207b3ea521090078189c56679d0aa12. 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/QM6MZ2219100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342ee4f0c678e93dfa44c0b468b11e5d5a93a056faee67e0b90e49b0f4e5d93a. 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/QM6N22222306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b56e51d79361ba3303d6dfefe2091e33fbe797b52504696fcca0f9f19adee4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DK4YA2281401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9091e0f10751c7c4e8980ee882fa9fcab02637e876ea3bbdfe975af4b17ca5a1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM4TX2279026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a711b9959f6cb9e4cddce90359004d974b24d1247759b48929f7a81ebc3157b. 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/QM4TX2208434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0136e139326449e4c64adb971ad369b575cfc77aa10b6336b14f98874968e50d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM4TX2208489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0bf380e8177c42e648e27ac7f4eb55277039cadffb0ecb9a018eaa4f1fbc59. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QM4TW2288627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8060206b9056f7c84586a1cc35b31edfd6f63313d8c6ea17ea1158d52df63b. 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/QM4TW2220085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf5be58aede05c810f8b061be02c279e566d6b53de27334ec56c70349882143. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QM4TW2219954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5250126ebd65141c1c0bfe20b006f88780f5edd00ac0d3a5d7b7444595066ff0. 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/GB2LD2110405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70db69512f3df49b6584bcf77642a97b91e53998e24bec118b1fe061e1b77301. 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/GX5MY2103826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08df5cce1dac63d528a410d0eba9c200002203ca3f02a9255e6b8850556380a5. 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/GBKQU2414921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6cb8dfa499fdc2c7c4f236461bd33a097b6c6e99744be1591a7e5de764f7254. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/UK4ZF2400161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecde764696cbdb19dd4409b1cf1a255dee29813f1905fc4539a9d41080112303. 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/QM4TX2450194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5f67db946ccdeab7fd85f54c518d0e71495fe7306f8769c7d70d81c927c16a. 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/CA5KR2420752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a5a78684064712513201d3af2852e23d3cb68d260e773778516a3677a53e16e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CA5KR2420753.