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 0x8a6535e887c69bef6e5a06bade94d2324a0f1d6bb5fefa98222fabda2405a1b5. 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/3625212d-c01c-4fd6-913e-65253b0e98d9.json and https://artists.proofprofile.net/proofs/artist/3625212d-c01c-4fd6-913e-65253b0e98d9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0x99279487fccdacb496acf2bd94de60994f1b6824b712f0cc7dee728a57786914. 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/SE37J1503972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae4728db385625845599fdaf23f7b898bee8b00328e43d94e4d419259141e7f6. 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/SE37J1503968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44459bcf66259230e4ecd831b061e47c981bcf89174ab3b2f1f03a9cc570911. 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/SE37J1503969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ba9a576d6741bb4b2e8fe9239e677118023b634bdc99911aeaae67256419f4. 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/SE37J1504357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6a5626ad12fbe876d28320e32627e3b532c1a807a952528c6503c0afb1d873. 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/SE37J1504254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4f324c4df45c146ac87416ae5630800045b38358fdf0dce19ad48ee0c59e64. 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/SE37J1504114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793382b7843168ccbf0ead7a2a1f309f333699c72f404cd667643779fe4d0f3d. 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/SE37J1503971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52656fde516602d2f6fa496d68312ec63745ace59f69a3d3b9599ec8a312605f. 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/SE37J1600142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34227a960c283705a7dfc7fe9de0bb1d9c3233378c2d6da05592cafb2804cb62. 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/SE37J1504038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45f313cede88576159c8e0e5fbcede25a9e709ce02da69a96b64ba119b71773. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SE37J1504072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23046d1fab4a8274e1fcaba2329f3277e47708524d99b288aec5a72971330305. 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/SE37J1504113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac7d4bd03bc6ec975f0f109dc93468e6b5fc4f336826e54374e22d3d3eb1604. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SE37J1503964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9414163f9280547a3102b628dbd5f637e45ecf45b47f973239d2fe4081fd7d52. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SE37J1504037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e55ab7a77ba1fc8c69ef755f5ebb6c349adc248504e20e16abab526bb13cbe. 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/SE37J1504164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690a2eb8e05981a4dafe499eab7f75b90c83130022d5bf40f7a251a286f4c406. 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/SE37J1503960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0e602efd189dd26e5a829c1be7dc36e005335530f6bfce4058a40d24e71634. 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/SE37J1504036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dad1298fe22b506ecdf765a522c4b44e3f26b53da743321e252c6989f6ff236. 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/SE37J1503966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337ba4f0c0af1ddb52c4a22f4580d2a4d41cf491942db0fd8e8a9d812885df96. 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/SE37J1503959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230513df2efc3b27466f6a38aa3e1e80a74247278eb18c2a4c1f7d65433d5340. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SE37J1503962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63cf2f86bcef943ef7781df4dbd7a7c60ef5fb7a8c2132a1eb4e932ae9f544b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SE37J1503974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3b976b4f183ce7f7c3ffd277c9df93d28e6233d8a6d1210fcf4bc66ab69090. 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/SE37J1504650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7226b4a55286648f26f4e4df634d1b313a37bade1c108ba3ec230626729a913. 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/SE37J1503958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef2d4bc99b44bea224fcaeed40ad258770615b4785165b16e20eb50a30c54d45. 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/SE37J1503963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e70d739393b2a39e29785a494e87096554278752a6d8011d631966431ba5de4. 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/SE37J1504253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361f62ee4348fcfeae781a1566b127db7acf375068d5364e354e1bf2d8d03f1f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SE37J1503967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52840aa63fa322d4095834fe037ce5f60c6ace2fdee8b307d94a9d0257acdcc. 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/SE37J1503973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48719bb62211422faa23337384f5d3734a16cfd249d7fa74b5af283713cf1685. 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/SE37J1504251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01396cd4eee2e0c88fe1d786c5ceb270309a02171fc3196efb2cec7edd683a5d. 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/SE37J1504071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cbf9a8f7c980a16c41bf78fe3c4d2d72695727a05490d97a29b8e41b80d6dd6. 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/SE37J1503970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc02e74bada6fa66106ad06343f8ca9c5385ab4f9c697451af5eed5e4072b371. 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/SE37J1504165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1261d4f46b33dcbd85498b21146b64d3e7c02cb97fada48c10b9cd12dfb00a22. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SE37J1504649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c9e334c42efedca65a5d02382f876adaaf86dc8d25e858672c039e98b44ba31. 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/SE37J1503965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ca44a7151e7d9cca54414902ea52e97d8a105f2b0a1561d2446ac65f27a535. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/SE37J1504729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636de4a046e575aad6d5debf0ee29258d50a93c2ba4bb3ba4acf8d62cb17d1a3. 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/SE37J1504255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd61c87b3aee2665ae3546ae95ebd1ec646c687b43fe38b03f3a37ebf4a69f4. 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/SE37J1504120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5985e6ad654bad3d473a1941e4eb5d1c28123045cea6525f6c6b73a2631b784. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SE37J1600143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44459bcf66259230e4ecd831b061e47c981bcf89174ab3b2f1f03a9cc570911. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SE37J1503969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dad1298fe22b506ecdf765a522c4b44e3f26b53da743321e252c6989f6ff236. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SE37J1503966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793382b7843168ccbf0ead7a2a1f309f333699c72f404cd667643779fe4d0f3d. 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/SE37J1503971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45f313cede88576159c8e0e5fbcede25a9e709ce02da69a96b64ba119b71773. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/SE37J1504072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e55ab7a77ba1fc8c69ef755f5ebb6c349adc248504e20e16abab526bb13cbe. 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/SE37J1504164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3b976b4f183ce7f7c3ffd277c9df93d28e6233d8a6d1210fcf4bc66ab69090. 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/SE37J1504650.