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 0x0e75b258f099062d9da1db4047f3712ca4c4fe43082cb6fec0387951c57bcb5c. 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/234f11ae-ba4d-40d3-bde4-62169e4c1985.json and https://artists.proofprofile.net/proofs/artist/234f11ae-ba4d-40d3-bde4-62169e4c1985.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Let's Stay Together (Superstar) - Single
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 0x01ab4de4112a404e8e06c62621a53d9e095bb519755af8fddc0187c6aaa6d700. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BRRGE1602918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe37e9ad1908b2da4ccf70760653bc67ec7ee4743504d2f1c86dd5cb9cc4b5f1. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T13:04:09Z), 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/BRAWX1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948a21787c5d21e2cae50f011f51d2377ad5b4d7caebd7b45604b408c8dc1554. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BRAWX1700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d3f584519086db393f0f0fcfa2b898e8b02c20ef829674c755f5291da303c0. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRAWX1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa150e2d0185291cb7459d295879cc13fd47843c14dfe5e22c930d8185debe15a. 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/BXPVY1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8008207fb07104299f75f2e6123016380bf2733ba8a6f252eafed23a1ecd6a0. 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/BXPVY1800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a22462bc32ae245237ef621c54d4f6830581e72f788a8b98f1ab0a107ee6fc. 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/BXPVY1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd7198daff02e5bbd27b465f95b1df0abb38a4ea5f4a5e779e5f2e8a177b1c6. 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/BXPVY1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c552572ce94b1bdb413a634470ee716bc4b57ed870b9e0fe813d4f4dfbb555. 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/BXPVY1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7678d8642649c1b0e91f44fb94cbb1f5ac99406a4d8cd3b07ff45b313a5c8a2. 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/BXPVY1800014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0978d40b521f11d961f2be7e908287832205270e20fb92ed2df3c01e8ba2a24e. 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/BXPVY1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f3619a4d6e35387bae57580204ade3d915baab92f62e1987719f12f29b6e92. 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/BXPVY1800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9693d5d1a02d7e54358efb066522590217ef6851e566fa900fb48a8afa5477. 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/BXPVY1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e9f62975b57286daaddc4cca8164b1d8ab72eed75737a01831e92bb9439364. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/BXPVY1800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246f782d2b62a49e61cc54af18926a3a1d32829326f11a0a9b6ef1fb4f1b07d5. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/BXPVY1800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadeea33aad8b31a8baaadf7b250c9733a48d7b011ee11160ef5dc31c468364e4. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/BXPVY1800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b0568e8d930d97c4ccc10e64592dffec99fa7aec0f43d14a79a75e9aee7e12. 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/BXPVY1800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe68efff739544d4726563c56c22fbd56e4e7dea880fc28a48e991efc3302f369. 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/BXPVY1800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e9992902138e3e7a459baa97e396939a84eadac19b5db5d09f67bf7595597b. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/BXPVY1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a4e185dc8663302a97146ee55b432a51a122c192f4f5ab1551b917c260e7db. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/BXPVY1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7888ecf15106b58349dffb05a71147099d30b7d6020345012576676f627e13. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/BXPVY2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11130f9770aaaafc84c2a0fee632bccff47a3ca05c2b171fc395cdb67f8434c6. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/USANG2180722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59bfabbc48957202c602317f90ce0150714cd248d8fef45976a1ad452d3e648. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/BXPVY2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93fbc34a8f451d5860dbeb75db1825e9d5a7469c6ead8f3d42ba8c04a270f57b. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/BXPVY2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1703df36b59aa1488d982afc3736b06bb1fad2834ebb85d6a8ec6fe428049513. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BXPVY2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb932638db2a2510856006a8ca2481fbcdc75ac5c6e6f5be666d8cd559b43ac60. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/BXPVY2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110c6fd9973f93f6325de9297b9162818e5ea79a997d6d572f6d27d84dbb7df2. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXPVY2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10b26e8b329fd6ca4fc6780cc4b57ca963b8c836aeeed336f7bf7c84efc827d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BXPVY2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aecd8069ab52e753654540ce45082fef5ae1ccbfc0dad0577cb734160a67917. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/BXPVY2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c210923d270877e7ee1cd410021616c180815998135bda396b04c9fd55d572f. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/BR7WF2500001.