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 0xaab7d547e82d744b9882f8714f945db913eb312c086f587a351fb77d7ebfd05d. 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/6aa04f26-8e58-4746-b63a-bcfa2ed53369.json and https://artists.proofprofile.net/proofs/artist/6aa04f26-8e58-4746-b63a-bcfa2ed53369.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 0x6f24105e63cfd302eca29ff3569f92dcbfed23fdd98a1b8720818b04f1164d54. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QM6P41995426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a3bd7f899b121bc5483ef16c6cfd856ee45687e441dd1b50c92c7165f347806. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QMFME2008083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c497fb851607c6814b97c79c5a97cf0be6b0aac17b2c75a59d189c4b73385fe. 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/ES64E2305486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a31ca17eb24769a78ae4d86b5489f16e87f37a7baf591843c8f6c682608aff. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ES64E2307050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670d1d63b8a42f81fccb8d14253fe4f5e0cc2b7211522c708322fd63d59cb68e. 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/ES64E2307818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d9bb0f1584c5754f3ac241cd2e0c8ae05976c60bb2f32e05c952d76bac488a. 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/USA2P2350022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eea8fad0ac2a55cd2d9c604bf05384013b202275ffa3aa56f317de0eacb0ab6. 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/USA2P2355044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb2a78b26411343a1356404234ef2808815af57e769f4d3e03adb5947315bf0. 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/USA2P2357193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b95126342ee2eca7e04c8ebe4e3b0edae7496f520a43ae1c68b5e4a919f147. 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/USA2P2402307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c70e4903371e24fe71b1772502c8444098a0da36da22097e5ca58fc4a959252. 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/USA2P2407870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62157e4bb374dea98d0ee45e8fd3fc408bd2ec78e0b41dca54e9844381599434. 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/USA2P2411746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd2f9c93b34d2f707e1c865791521e00cd7aeaf575eec3277af4fd527a2fe9c. 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/USA2P2407872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c8a180cd70290e5686b5e2a43f42db4e640a62b22c089f3da7e87f9076915a. 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/QM6MZ2443570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94795c5c2e79e69a25fde0712280fa8c5801d63d95688b2d2d9f1a398cbe08ed. 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/QM6N22420814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20f5ded011956c71b28563239c1888679707bb126acaac884be0bf8a41bbcc7. 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/QM6N22421152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b42974fecadb5d3689def6608d104f29aac3806d4cd12f7943b29fa53bcc24. 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/QM7282416639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4555be72e9847993ce27f132fb96f9a187e729c449089fb79761b243521724. 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/QM6N22420952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953ce01a9a4b3f848e6c59cd91be62dd324958bbf7a2b6d77a7aab1773e5dccf. 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/QM6N22421050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1eb40449c134ec30f9b91a3638ca2cb51b43e173aca2ff72c2581e1286e8b6. 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/QM6N22421105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27c892a9d319f53fb13b7d2d195281f6b43cb200b0cfacaf6346ae1b2d0b165. 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/QM6N22423884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3b41f1460271d7f86bfd6e926b2d2e343e329d33d9c4e82030c4bc73f75c61. 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/QM6N22421136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08ad0ac0ceef4a80f1925f018095e0ddb2f5569b06fa2920c13b606ce106ecb. 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/QM6N22423909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1892f3671c0ab7eb36ad8ee4cfa021f4514df6efef8b27844cd1496b1941d95f. 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/QM4TW2574756.