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 0x00099d0d2d4ef8fff52f7665be102f1714beff6a67ddbafcb178f85cebfebd6b. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/af7ae352-cbe9-48d1-b3fa-74ea77b96f4f.json and https://artists.proofprofile.net/proofs/artist/af7ae352-cbe9-48d1-b3fa-74ea77b96f4f.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 0x5f0bf3a620ddd4fab7445d50fe3b2d8246dcfb30981e942202f85bf7fe6adbaa. 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/NLQ8D2101175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c8f438083a0c0dce8769d53ed5693e83a0926bb4fc0a2c3b380e971ed1a598. 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/NLQ8D2101176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac0b3d4fd254aea7e68a0afe81eee7b83e7d4c42abcb1488434a3a9e03fc98e. 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/NLQ8D2100619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1376d06e9d546d06055cc4f74ca38eff1c5ef438a093f909902b09b5978fbd7c. 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/NLQ8D2201039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906765460bab8edb074fc748d3f7001dd8dfbce980a086ffe60844b3e903d242. 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/NLQ8D2200573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388c002f03b301d314bea6f79e713b71c600433810b30a0c1a54c01b5d187ac1. 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/NLQ8D2300638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458868c79f91bb92c1aea1249472a3bf9fd0f7a75c89d6e98edb2ee7cccbaed1. 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/NLQ8D2300368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77dfe93f60928cb9d285346f5912d8e4cf2b7abbe5900123d322122150fb94dd. 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/NLQ8D2300228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18c188f8d3a55c93c19718e5bad4afb907ed897ad7ec4672b7e97608741b929. 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/NLQ8D2300057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66936a8fbbedd98b7884a501a8980b9ea7c1c809f75eaecaa5633dd0cf41a2f7. 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/NLQ8D2201438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030105906019a902052bcfa15a8959f48111974be35e491283f5040bad67c97b. 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/NLQ8D2201390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1349ce1f6f3e820dd0f27cc3ed61d6ec00c8917403bec47badf3d0ae5db2a1d. 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/NLQ8D2201350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a91e8d11435b78ef9cc61d8a7c4fb8354f58af9894475bdb2ccee77b9bc4bd. 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/NLQ8D2201282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62f8e0593c0058e97585221edf010b9c57c4246a8519ba6c7800f7c0de9ef2d. 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/NLQ8D2201151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5999b9cbba49210f6c8926779e29821815b37200784cbab5d21d3caaf4c8ea. 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/NLQ8D2200915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e21c2247082d1d735c9297738b62338bb00cceee2ad50fd3d920091568c36bb. 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/NLQ8D2102019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b70a01f58d7daad60c19a8750c47896c71066eb5372b0e0e4c8f12b7f0aec8. 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/NLQ8D2101928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f7d611b162edb4aa205806c539e8b84cfceba2d457e2cfa74263f08753010c. 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/NLQ8D2101621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1468696bdc8950e0909daf466fd14aefd8dde3caa5e07b702dfe100c75f767c. 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/NLQ8D2101219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29de7e3f376debd86008e5a41fe919dff6d1d8cf1f431e5a21e4493f0d4b986d. 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/NLQ8D2101055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd93feeac73e54f9dd63c375c2e1b60bad21b75eb3155815b73a8894cb489cb. 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/NLQ8D2101053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd69c13b51af79caccf72b7339021db4257324e7ab289c5fbc87cc7d6e0f190. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NLQ8D2100915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b871273704fcb43ff35a7496f073810271e09d7792aa51f183c2447e1142d95. 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/NLQ8D2100876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ec26f48fcffb480cebfb9258dcd78d0a695c01fce2e020c076ce4ed4d4bc56. 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/NLQ8D2100704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2548fd5f2a6f7a7f9b3eeaa1d71dd7deee369505a4fef9ca9cd0f66160f072. 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/NLQ8D2100542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecfb6ae17ffc9d2ace9c46d61efa6f95fb9ac9fdf8f9e4585b98d2c07f087f84. 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/NLQ8D2100301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98e41f5cb92a97ed9f400deb893bd8d1a2b44a44d102d49eaa7454a9bed8840. 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/NLQ8D2100233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e387d4d174ad95fd1f8e1dc263632bd2c7dce14006cb7cf8371ba0a053e159. 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/NLQ8D2102216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f5048864fc2d1320f18e493f53e7f256b3e75b359349d4677e6cbacf04a014. 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/NLQ8D2102218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b524887a4a6db20f92db745329c76a0aedee656aaa10fa51cd82f6aedfeb6f. 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/NLQ8D2102245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2559cc2c730885e8cbbf220f095bc08d79625a4844f66500802997f5d60a9d84. 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/NLQ8D2102247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb2b5a8c6ae3729532cccb09366d89aff9886ea3c472bf62d1c838a70e5c768. 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/NLQ8D2102249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50d408fb770110f1f066a045b367de5248f08b0d5a27a11e79a59a745176452. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NLQ8D2102255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead6a79f39b90ff9bedde53d378fee0a01ea6591bb9ed154a84627713c9f3308. 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/NLQ8D2102262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821a49b2089a30eaa2793888cb0cbac14e28e19613403893c7dc4ffed55e9329. 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/NLQ8D2102263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956d76d0ca5433e5d8082363f9ac000bb06a4c41b5fc41775704b6757b643f37. 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/NLQ8D2102264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e07d3b54ad2216953f4b020ae581a33af7f4f9c317490a3441d6e64e6462bb7. 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/NLQ8D2102265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a2afb3b152b072e3b79f566a2307cbf6127f031bab120e315d5aababa6811b. 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/NLQ8D2102266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d51860e9cad35b797e6cae988847308990b0acacbf175520f0a1ccc0bf33992. 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/NLQ8D2102267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a8f24fe6fc5840ea551d0f46d80bc6e9640ae3863da3684abcee0d36289d83. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/NLQ8D2102270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe665c3dc1f6d477cd6b3e04ea9d3ab26664ec794a724105ab0ff88e60b4ff600. 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/NLQ8D2102273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ea2ee4c2570210541098daad7003ae043f88952115d558b1090c9e30bb364b. 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/NLQ8D2102274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57eb6036b5d7729a225c9a205e9eb047c1131d9bce42c93586dba4a857db56bd. 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/NLQ8D2102276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275918c58c9a1ff8c5b32e09442a88e19e49cb9d014118aa969471a6b71e4744. 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/NLQ8D2102277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50aec85f2767fc51f61f8ab90b173e991cafab6bb49d2d74ab663502a37e54e. 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/NLQ8D2102275.
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 0xb0b34717d6a99505487261bb3d960b09f2950a7fca41ef29a19fcd45cbf7dc89. 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/NLQ8D2200059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd31d636bee93df10f63d27ffae0d1b1af466a7f5ad7a40b62ce624fcbe64509. 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/NLQ8D2200067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77f7b2913312363f29c0412c273e7eae674c74488cdcb3523412e8b0658c284. 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/NLQ8D2200068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4be8fcc42e72467981ecab91e3874c8432a7beb385b068de3ef6d399311662. 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/NLQ8D2200075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422a27e6eee5c7d6d0f6fe6f2e6b8f3ebf61eb209c48f23394682efb015d422c. 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/NLQ8D2200770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ebcff63a4ef83559140edb7a91fa85c130e07ab9328e4c5dcb35aa4adfc1f5. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/NLQ8D2200772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7230d756530310c332e4b574551260a8c56b3e2ae504c711ba3d416a3e63dfc. 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/NLQ8D2200769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85add0066873ce6dc58038138c32dd32f257678dcccdf46661909229d449cc2. 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/NLQ8D2101421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ffeb911a0d34ecff51e09bbf458203cdebbc3f7d396cdccd7f00fc7ba7c073. 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/NLQ8D2101422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5160c4f77a56c623469557f58fafa1b323f0eb18e020aed0d2a364729bc013ee. 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/NLQ8D2101425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe9106f70ce15de74fcec43a1062b525198f78a566a7164a9eef07f870f0105. 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/NLQ8D2101426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344ad4b82c9cf36f99bb06f9da8551f0bce57d11247a3dbb7e406d506563bb7c. 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/NLQ8D2101428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55aa90d5147a7a45414c97906a8b835fd27f61fd3d42a7a4fe7bc212ddfc86e0. 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/NLQ8D2101429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a864711b4ae87060561a75d737b32eeaf3be821fa6704a45b2c369a8bb28e1c. 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/NLQ8D2101431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832400c573d6963fd36714045f4200dd6a01b8fa9aa68dc2268475e5593d3b7d. 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/NLQ8D2101436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c673f2a57b65b82c4d945784ac2c3e2beaeee43a48281d7bdf9be10131cea3e. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/NLQ8D2101434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a998fedc5191f505b66ac2eef129b0df22b3581e356f73ef1569d667a9cf88f. 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/NLQ8D2400748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634bd376c7c870c44f5589d531206c63c584b1e92851ef648b2838f06402a741. 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/NLQ8D2400404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01fa73b778ea03490c4b186d1cd0dd91749eb718b475822548971fc8560910da. 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/NLQ8D2400354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22938d08cb93a8e14804c3b3aa8a427a5068cfeb8834163a9e7a7bb69dd728d5. 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/NLQ8D2100741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b83a738c77488e975f6679597ae69ec512612732eda034e6a60bc629c5b25e. 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/NLQ8D2100742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4cacd6c7c25b0ffc1c2c2a8e5982fddacd39ffe070dfe73809bf4af7850fbfe. 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/NLQ8D2100744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f9eabe6689860f597cb466671631ad388c69ed9545af30f1d3c6beadb5bec5. 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/NLQ8D2100746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01500d096abdea79ad83a83b43ac4144f907556517cb7d00df377eebbbf8f8e. 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/NLQ8D2100749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c96ab1586c0d11830157f95e15b151b0332b258a4849194e8ea5155e2af0781. 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/NLQ8D2100750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeafaca478656dca33952c5af90fe775fbcf8233c6631511b1895a849a43f4e19. 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/NLQ8D2100751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e28f8ab40ae552213cf5f28675051605dc6c729480cf6ad307110e60db3db4. 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/NLQ8D2100752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61103e8ff48b8cb5b8a6794ae0534009c030d4c1374e81ae89c9f08dcdd0c56. 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/NLQ8D2100754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6a49c92bad5d64e2fcb3c828b7468c1006bc189cef3d98426a8f71597482b1. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NLQ8D2100758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1183ba20045813e74644ce0936dd715e81156a5afd3680b30e2952a31e0d270f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/NLQ8D2101611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0680d2dba061edac7ccf5bd9b54aba09d4451a95721b1564282e746e117f6640. 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/NLQ8D2101618.