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 0x0a72a66372fb7fc9d0db42b4dcc249719b47a16fbdd521c6162f7df38b0bde4c. 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/42dd7a00-8793-47be-bb43-8c089f17867d.json and https://artists.proofprofile.net/proofs/artist/42dd7a00-8793-47be-bb43-8c089f17867d.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 0x8bb12e04287b78e61c3d811966891d0236b5eb5763c479c76130151e64df2cd7. 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/NLAM42100155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6abe709f7b4a4056bf4bdeb5f4fbf0a1d78c695ac57ef18136fd615c6d546502. 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/QZWFJ2338067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39304187b50437e0ed94e9a9a89843667851b8276ab56140defda22ea92f1a8. 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/NLAM42300301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845d273be13bac506cf84365cf7606c0d59a4f0668357c0db95620bb681e3dfd. 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/QZMEN2395644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87bf7e032d4f449da3ab41d7ba9a93e50bb70ddb34bbc94c5c6cb60248f508c. 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/USA2P2322172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0065b809ab1a7b652b7873afe66191f63e6bb3ff6634c48a54dcbf105bbd116a. 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/QZHNA2334152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9bb037f316fd0fdfb15cdb55a2635bb8c8c8749280a5ad69f0c72f10063877a. 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/USA2P2311593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4867846cd86d08e8ca3c329669f2700c22dc6d90683696cfd6288d04e3f3c44a. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ72346643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecbbb38ac7ff6613be92b9683dc4ef143b6cd17a14bf5249c5265e8a1904427d. 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/NLAM42200256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e028e772d752cfbdddc3eb5faf46f82ac05b37b5a187cadf054ffe6d6c4a36. 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/NLAM42200186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7316a40c5ffab960b59dfddd66dcee4ebb782b3154744c1763afb3003ce86996. 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/DEXO72200324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145a272ab605918f92a6df59959b4a06365a291a45c0037f5d8568df1dda4b07. 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/CH7812225445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a466ffed2b46704c3a4c1537ef5b612b8619da59473fde314d89e7a7cde00e. 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/QZHNA2210919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0610acf59e2e61db8fb43e010a2d39dbb480240162967cbedbe4cb96b8842681. 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/QZHN52282226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8e0de753763a3350ab4c4e8b081bae9e659fa21c5b4d75c19b7be2ad4912e8. 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/NLAM42200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd04382d0222ed1744e6289e78ee16f351e0987212a4cee1518ad090d05297de. 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/NLAM42200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b77dd857017881fcb3666146034539704e080e987797344797e68bc4104057. 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/NLRD52024505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92492635aba418c93a299847b5f1ba361d250e249e1ae0ba4c9a0de2e2702af7. 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/NLAM42100165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6248fa78ba758bd5ef6fb619e785c26beb913a355eda1daede4da72dd91ca0c1. 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/NLAM42100130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc322ab6ce47994cbdaa4c236a7158cb533d5db8f48437f19b936a3e45f2742a0. 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/TCAFP2199100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0475e1542e4087fa569e955a351d73a9d6c5d802ae15b1dd6ba8c5ac285417e4. 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/NLRD52018930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e8cdba44161787159269850af7fa0375b246abc14afd5a7cdcf1c52b548eb05. 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/QZDA72113817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39bcbc642ffc3dfd6faaa7bc184927e08d694a93b3e836762f61163c5a680cfb. 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/NLRD52018907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd4d97741e701b8a9b913c2b03872c3ee95360e73159ffb1294e63383b03435. 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/QZNWX2061547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe335362118b0b0aa8b4ba477668815a84b1850f8733518b20f203799778b4a9e. 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/NLAM42400113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3494785b56f2548a39d59d0af070b5bffe39e9243e427de62a04464603f5b0. 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/TCAHY2482253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61371721889879013aaae128cb364f6a82be95bd91ce2b277e0756e8deb5ffee. 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/QM4TW2424535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9895c2c2c4d02901e1c66c85ade5d9229a56fa8024199caecfa8aa7c57163d. 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/QZNWT2512052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7a9a3e8d6f0e421559ee2d26f973ef37e7e53710e592cc471e21fd6adff28d. 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/USA2P2512332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a7e51ec8a5bf7c77e0ce7702605d577d2720b66870bc6c00cb24fb22dc126b. 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/USA2P2505274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfad438e073e8fbd2b42d9e557ebeae1ba9c780bb7ef5f92fed8806d4c6d6d0f. 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/QZNWU2325640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360205644f9687f78e68446adf13786d4d4ab7161618d550e8a2ccb2ad6bd00c. 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/NLAM42400161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39371f827faabb52df55288fca8937702a76e3ac518bddf0bcba33f16a7d44ee. 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/USA2P2413706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26422c71abb127735b839d0d171570002e3ea453a446f8941e278a4a10c3542. 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/QZES52418063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70fd5cd6a9b18ce2014d975e4f931b56d3b2eb8a49c6850822dc9ee79f0e8b5. 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/NLAM42300353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39bcbc642ffc3dfd6faaa7bc184927e08d694a93b3e836762f61163c5a680cfb. 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/NLRD52018907.