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 0x8809a851ee178ca7d7e02a356087130a43feba9272407608ab422b5d016943b0. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1fb028d2-7653-4b75-a578-889594551ce1.json and https://artists.proofprofile.net/proofs/artist/1fb028d2-7653-4b75-a578-889594551ce1.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 0x0c987a19f901da1a09dcb989323e6f2395389e1913a8a960a1bcca5aa95054cf. 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/QZDA52421826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4bf70e252d7451411c63a9275a49c03b4d0d66f3c017a967ae90271ac024f21. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZES62272389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15fdadbdd9f8f21a8c1197b339782fe594b2e296867ed6c1da271c1d7feb539a. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZES62272393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8080136a7d8fc46fc23f10e1ea5bf9d8bc0b66fba6aedab6517ea0adfcdb9e1e. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZES62272394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e8599920f8e1b67b54410f7d599aa2513ab4f184f554af2be77579c5c821383. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZES62272396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f50911492972a93a65f2a5ba71cd378ab51604cceee1f3b25dedb22f36554b. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZES62272397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcccb4bae711b7af6c8e7ddfbf528e10e61044ab7486360a70427b1b3b8d10c0b. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZES62272398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eacdc0027fd2321be9dc622d51818327240dac305af5889454ce77bf4f02da2. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZES62272399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa1430ba63f027ccd7c52825da2beabec6cce09125aec927b5addf60cfeb9e95. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:55:14Z), 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/QZES62272400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f44b8a25a9e24314011b783e8dbfc5d61f9a6f14cb9751862f6c9d6ff3c77d. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/QZES62272401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2309e468b135b1fa1cdb6e0f346b390328627eeee729a451b0f509fba784d691. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZES62272402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d98aebe28b64d633cf444ccf9d4ccac599141c20c1725e282f53975699eb31. 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/QZES62272403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70c95634b6d73439236a3717f10b902af09270f058eb3be5d0885595c4eca5c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZES62272404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73bea06ea913eded9d6229d072f5ad6ef84454f2eda5ea9983d3e83b105a52f6. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T01:01:57Z), 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/QZES62272405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27fe0034ba80e7a14bc5ad4a782a35836777e8c5616b6d3b91224925ba5378d9. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/QZES62272406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4baf181e8ed48dd41b33785f2fec044b836b7fdba0768291bf186d399cee199f. 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/QZES62272407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5505226e2cb1f7a92a8dbf3555f95477cee3759e17e6ee4bd4d84213b1699f51. 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/QZES62272412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8871d5a2607ee97a6b6d7806f484cc7f28f8fd14bf4e05f310e8d4b05b0a41. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZES62272413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c8f0d0b564c14301e4bb4a1c987de0e6e11acd4469a699fc7431ab8aa558eb. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QZES62272414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2368a50f1d58e9eb753ebe841e763c0f496a2cd8122ba147aafe1c145d2710b2. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZES62272415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59716697c71d10044906992f3576ca8fda3e11bfd5109b88afd3cea263cefb1. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZES62272417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb32b385bd3d661152246d5349a5013ef578eed6effadd347d803fc66e976133. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZES62272418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0300a71534e818e8260546cdba131c194bb6bfce42b16e426edf8a8e560d42f6. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZES62272419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78617c75f96b39f5e7842a01713befc88f0666f36c7c2307330469506f01ac4e. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZES62253274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c6ad12f5c8ad0315e2939bb23b8cb36f1ce6fb55561516d8c02c66dfedd60d. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZTB82205077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92642e2a04c99b790504e18b46313689d9ad3079bcd46f749b715cfdaf76510f. 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/QZTB82205101.