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 0x645a71997d145bab0b9112d0b6bd5eb3ee493e1cce589a75e4b90e6bd27ed227. 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/7e2779c4-e2b0-4f9b-9396-2483eaa716f9.json and https://artists.proofprofile.net/proofs/artist/7e2779c4-e2b0-4f9b-9396-2483eaa716f9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dont Stand On The Tracks When The Train Is Coming
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 0xe019f68f539fea86ce702b1fcaa055951d2d8dd1c899f8c7228ebb4e94274cc6. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZWFV2441289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7405e7e794fac12c23c1d24fb2cf368c1e2e7f778e37d2f97f071e79549bbf. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/QZWFV2441290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8922defea28ca5f166b446a51a27988f28bd2a9a043ffc4d53b946b16b29a65a. 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/QZWFV2441291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f40a684b3ca1ef2cb04dadbd4e6f4653b70aaf9b9c7b28d89b53d0192a85e6. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZWFV2441292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56957b675ba9caf26ce902d5a5018b56e7bc864901be148adea3bd4631c84d7b. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/QZWFV2441293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87ec56482ec5bde3f0228266ac4e04e1d9855cb52aedc93e7be935e116341ad. 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/QZWFV2441294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08cdf6be5b4bafb0ee605fc188f9ece654651563f7e3f90859682fb3a8591d7. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZWFV2441295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c4ea3df6c42bd2287ba7dc8a862efbf863784ebda22e6b2e3b6d8329f858117. 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/QZWFV2441296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd6f57a145e1e13e5c139b3b8426f13a20a579f3018e81c503db2eb6f034a80b. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZWFX2417299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd207f31cd0d4d9a243a03964dc083d8da6bae2074572a0e411f5d3994677c6. 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/QZWFX2417300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8060b23b87fcaf74ac9552ee19a29c9e9709415062eed377ec2999b0e04dfd61. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/QZWFX2417301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307404700ca907b679040e2e37aa919972045e572e1ec6eb9abd2bdc44df965e. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZWFX2417302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893bb4439c27333abbc33f55a3d6b226d8f1155d0d1f032e0deef3c509c72dcb. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZWFX2417303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25acce3e1c2efacba06199f4399a3977b5082bdb35ac1e1c4239ef232ed1f126. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZWFX2417304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832e18f81270b25092c2d63cb00d338926e6e3577e94a56b310775a87140b6cd. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZWFX2417305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2418bc734a697718d98ee0b3519830b451dbf1345312f7f430fb73b8fc6fc37f. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZWFX2417306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8486f552eff4f9583d846c2f08fc9b5fed6cd74bec2ab2f6e59aac79da3eb82c. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZWFX2417307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38aaaeddda4c04b6d21138e4d491b1b5b5b9e6bdfe62a4bec04f3c3274ffe888. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZWFX2417308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd984b05077da5483d3742b70b8c1fb0873298d836aba5aa4bc5fefe2015b59. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZWFX2417309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc118dda2a942d10105ab9afbc7a7b4ed3b96f30f25ae67e013d3f6f2d4c52cc8. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZWFX2417310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c47fdec7151e9c0344d8cecdf05ae0f05208fc2f314697af4987a34b38efd6. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/QZWFX2417311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767434e6851118ebdcfa20da1dc3b590c18d96fe92cd260b030d0f54158ad0fa. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZWFX2417312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a3923793a226a18e824435a205133186472043978bb1deaa7b69e49a705994. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZWFX2417313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3899b7c3622017e6b0c602a8aff22715d302c2904895dc183b7775d6a2afefab. 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/QZWFX2417314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681e439e0795344ddb090539ccffd9a8c0327c1f7871d072fe833a9812561308. 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/QZWFX2417315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3dbcd5321ab72089586cf1e7172bf755dface802de447d4e4b8bde010862ed7. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZWFX2417316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e395349f95e9e4ecd341b655a01630f8bec97abb1cedf7f9dbdd63a7dd94a5d. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZWFX2417317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293e811c6792d2f138bb259ab4d3c75d6d3943a1330ce1c3d4921c05e3f6713c. 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/QZWFX2417318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6c323aff455be0ee23d9225446660e16577996e1c7322bcbacbe711c7f4dba. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZZ762499795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd3c18a798f0f4981fe921a85ecd8c8618fcaf1a7dc3d31e33e5cf334638788. 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/QZZ762499796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2645097e5c0e206749d9817f9dcf1d5ee7856c5bee4ab551f1cdfcd2e9c2b7. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZZ762499797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db72d55a825b7952cc4d19d4ef18517c5b0fba69a1e9cf06067b0a5261c2693. 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/QZZ762499798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4678acbf83cf9709685120472a210d9dd496309bcec673682dbb5d27dde01fc0. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZZ762499799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8625bbb0a6c283194084324cf8844b3655ed90afd6898b0605f88ca8a0175f. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZZ762499800.