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 0x2f08d8b1745d6752f99cd8bba92043ec5f0bb35f9f0a4aea24888ff8e8b37fcc. 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/43af083f-3d6d-403c-b5e3-777604027a05.json and https://artists.proofprofile.net/proofs/artist/43af083f-3d6d-403c-b5e3-777604027a05.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 0x6d0f433e80684d31e98c03366d6f4134d224b894f300a6d7fce4be5ecdb04988. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GBBRQ0100053.
It's Just A Feeling - BK's Back To '99 Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf1c20b1c865ce44b30af03486d9535abc8df1e7915dafa673b692a79a749f1. 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/GBKQU1298651.
Hard House Music Library Mix: November 09
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8514b4476de633406a464400ae7c6f1e7441f0d0a0c727d44375e42428989044. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:21:12Z), 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/GBBRQ0000037.
Lost In Love - Paul Janes Remix - Mix Cut
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9833b3a8f07593b1ded95e2f6a40b6645012ee3a8ae7c25fbc9d3dcf367ac6d8. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBKQU2002156.
Fire Burning (Trap Two's Harbaceous Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8fc7af8e2b24fc91e28cd850d4cbc0554f31ac8b527d4e7789ff7c9be2be4b9. 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/GBKQU2155323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe989292b2c762ec27728ebac3a84fb652e9723d27bec24890f107b0cba4f21fa. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBJAJ1701257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f3b107c4a5a0b858e57901b0de0b06803edff3d40ce3d88c3ae61b0ad5de91. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBKQU2155340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7c8f88692c42c77f155cf4a3f8fe3a281b8d0260edfb114f662d596f413c83. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBKQU2155325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4961efd5fe6a710ac6eb1437d71d2abe798742aef47f9bf3243475ff10a7e3e7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBJAJ1700955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1c0ac6655a7756200d555de19feb9e0fb6c90caa1c1a97a91b4678b6eefdf9. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBKQU2155326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643649d7dbaa1a9a843411a3d1bf48ee7e595992195bc95ce10fc4ecbfac5842. 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/UKGGD0600001.
Music Is Moving - BK & dBm Amber Mix - Mix Cut
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab65954a4c0866fc49db46a9ad1a53d55c8334b30a4409963d8d71af22015bfd. 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/GBKQU2155327.
Iguana - BK & Nick Sentience Remix - Mix Cut
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc750fb4bc1cec5c9f3fb65289fbd9d6a2817e8279bd3987fc430d560504d3a57. 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/GBKQU2155328.
Bad Ass - 3am At Convergence Remix - Mix Cut
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece910129794e64664070af020fc13d78f0a907066279100b8c051e44420389e. 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/GBKQU2155329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d199f97f63587d3a710fe6662a903038264e3dfc42d2aa6f4206611e4c1d8e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBKQU2155342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf56400ede639a8021bf260a3139d211be692ff1011bbf1ba507b348102deda. 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/GBKQU2155330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c5ca4e4b87149d8d8152826c5197d78d608f4f7333a658266b78dbbabeb5c9. 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/GBKQU2155331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6dccb1782171845480e80d66a56d353bd8615c64673c01a9d135c939086c1d8. 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/GBKQU2155332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x984b11102ef52c4ff16324ffd3f2ea06b6e897e042740c82de0f59828e1725b6. 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/GBKQU2155333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30740222490997a82e48f52a6227f7324ec2da6bc124cc60446350c628d22cc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBKQU2155346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39aeac07d250f050ec88248cecf69e088f8371b94aec38486479839fb99394e0. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/GBKQU2155335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ea6c77bf1ed4ff986378ffd77653a9755dc57cc4eb32955d25481db6f17e55. 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/GBKQU2155336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93372cd05ebf5a8f097a6ebb316b06d6a2cb0836110834bb4471d68a279f812c. 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/GBKQU2155337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26cd6f0df466ae29d2d0b27023d14b75b00361db55de3f665d89860454a45340. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBKQU2155351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57730ac91e2211f983b6b8475c973a956f7dcd2c4a5211a6401ac88f17de5ca. 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/GBKQU2155338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c420d5b3fc39a7ac9fef46811094a7bb9a77b5a68b605e7f71571c3b38419f2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKQU2155339.
Revolution - Bk's Rework (Remixes Part 1)
Revolution - Bk's Rework - Reinier Zonneveld Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b66124a12f4196769ce0f54d0fa040009c517f9d8904343cc5f075a4aa39122. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:29:51Z), 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/DEG932103565.
Revolution - Bk's Rework (Remixes Part 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64bf4ae5534013973c593beceea3310a3ba3dbc1d01b33ba68d2a89a9a0a022c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/NLF712303917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd390e5afa4b018609af4a943f2ae39f08b2b9eee2e933a6f2b9793ba4079b6e6. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/US38Y2410074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d8946287578202e0fcdb81b50ac1717e4d9eea69da0322fd10f9d05bac15705. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/NLF712405190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f3abb307d7f37c83d00726cfb4eae186a0f6b2069a180462709ce3f1a644f1. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/NLF712405908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc2f063418a847e2ad643671203cc4a27cfca99f8aa263f58bd388fceeb08ff. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/TCAIO2423140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a50f344bd3828552ad76ca003057eb2aa5d0449ec1f85caf460f935e736f8e1. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/NLF712409952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150bcc208fef2833113691e07400161d1b3dddde5d8ca7d54f3cb4bdd0f5ac58. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/US38Y2508742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92fff31b99f341f88783f150f88b0c6624bdffd7a52d8015d61c4c5146a83377. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:10:06Z), 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/USA2P2533102.
A State of Trance Radio Top 50 - 2023, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64bf4ae5534013973c593beceea3310a3ba3dbc1d01b33ba68d2a89a9a0a022c. 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/NLF712303917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa614fe8b2f304330fc5a12d9caf7097cfe38676c9ce00adb548f97e5f94f65. 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/GBKQU2308792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b3945410a9ced02f94fba3039903d30c5381a4aa7ea57af63a73e99e02f047. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKQU2308793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5e51de34524a33025bf190916243d54b9b84596c45006911c0230d60daaefd. 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/GBBRQ9900231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ceb4880e046516195075e76d3a8b476785a598bcfdca98b0376c245ac75aac2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBBRQ9900185.
A State of Trance, Ibiza 2023 (Mixed by Armin van Buuren)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84aef2a311e13c9558e11fd6da77a8f0921be1780faaeb54e5456179d0c65add. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:48:09Z), 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/NLF712306529.
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 0xde18d49459cdf4daff047e32fea045d0451fc5173bdbfb983a45e7f0b3c19064. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/GBKQU2308794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d6813cd823b100529cc519dc52b216d376f680ac22e42c08182b8fdd57972ab. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/GBKQU2308795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24b3e870dbff7407218cf3df3e7279a2862cdf3a55a81a9f82a3461b6ce3c17. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GBBRQ9900039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3afc6cdb2ef04d66537d113e69ccacccf724bfce1b02f3680ef6850015392dab. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/GBBRQ9800128.