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 0xfb8aac0772488928583fb6030e2555d118aa5b4e97bce507eb11fc1f0143608c. 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/15f3813d-f579-445d-96eb-b05b70a23dfc.json and https://artists.proofprofile.net/proofs/artist/15f3813d-f579-445d-96eb-b05b70a23dfc.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 0x4636217961494548ab7fb27424937ec706ef30367215b23e72a81b7dd644e16d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USCGJ2107945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa359d878773cce591244d68f3c3743e95f1410af8a83277068a1c53795183e5. 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/USCGJ2107956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978193651f65e1e83244e702c74bfc04cd73983b810a2f63738a66838c684dd3. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:22:25Z), 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/USZZR1201706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7828e00a1cd8518d033e382a112c3d895e49d498bf33bafe838ce86e87fabb40. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/USCGJ2107954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3e905d5b8755bd4e39babdb2fca68073e006a950a2c9678700bbbcfd2ed741. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/USCGJ2107924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4010745b90409b9a52047478703317289f793b4b40001b88c2f1fba554a0c7. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/USCGJ2107940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d5cb647e761513bf742d20a1f115892b5ba6f7c2c72e0a75bd523bf0008dca. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:40:46Z), 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/USCGJ2107941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x277288c8acef3a13fcd08a1a47d729b0e7826b31013661c9fa56adbb5f1e634c. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/USZZR1201704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7dfb598bcde21825217bc718ed10b798e9227980554511a254d428c5a57b775. 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/USCGJ2107938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87114b0ff4d6f92a473ce873532a467b013916b30478905485b53e67658dec0. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:46:47Z), 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/USCGJ2107936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x130c388cdfb2396e8c7a1f237841db6a9bf2c73cf39a68db408c6bd2bce8606c. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USCGJ2107939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076d7e70a5965c54786c54b6fe34222a3517f12459f427e158da69115cce7c65. 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/USCGJ2107935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255a9adb7cb92961ad85670198d82d971828ba72203960fbfae03b836e94cdb1. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:45:43Z), 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/ES71G1875375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8194249614f53a261e5ebf911f372af320462d10067e639093558e45c2cbfcab. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/ES71G1875364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe663840ff79b82871128f1a7e22c56d9de889c8fb541fdf8fb75a52c73ca546d. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USCGJ2107928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78376207567792a318842d7c483b3a93d2e7d9ee54f44ce0bb7f3e32d24ff790. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USCGJ2107926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2572b8a8ce0916208eb6b1defd6b1d3a6a738146801eb075bbb46bcd64eae25. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:47:14Z), 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/USCGJ2107942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73791b202029d4d582361147a606361e6e1f2fd3e6ea49b5cc5d347e8a64160e. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:38:35Z), 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/USCGJ2107931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x130c388cdfb2396e8c7a1f237841db6a9bf2c73cf39a68db408c6bd2bce8606c. 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/USCGJ2107939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x051e8fa391ed8655e3b7fd40b17b4b0732d49d76cf740a101935c87f260bb9ec. 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/ES71G1875392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4478c8c0df6a5a56ac9305273a28f93a1fd56db7542d83782b778c3d7f1516d. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USCGJ2107916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958f0ae23da8c1bfdce55c0255584bba003f4a29fc544a74a182832266e221b9. 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/USCGJ2107932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb525198c98816ac313c5a15dfdb8925fe87152b9da0b8df200aa21c23cdafc. 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/USCGJ2107950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666172fc89c803517fb03d9c3f4990e4c01e6fa8aecd678321bcffdb9fe35353. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USCGJ2107912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c00da1d58bd6481dbd0ecdf3a6d8e5a49e02ced82582d4b78288dadd9e30fe8. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:03:45Z), 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/TCAGC2262092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92fd9a263c4aa0f2ee3301fbd03f41cdac6ef3c03e6dbbc7b518b58f214aab5. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:00:26Z), 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/TCAGC2261904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d065edba1aecdb95b3d0e5c75c03432fd0c05d876ec0959de4067a6290fcdc. 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/TCAER2003704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb029421cf4ebea4d9fee05fc33c1497b8e9d6ccae9883015ae89edd296f898c6. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:32:34Z), 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/TCAER2003674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0869569e6c8835ada7fd12281b9e3b334bd193c66c5837eaf6f711bc49b893c7. 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/TCAER2003673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417092de628cb34c8d99d8bbf10215a0e997c55d31738842aa9dd073467c82ff. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/TCAER2003688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8bcb10c35b91384992cb1002a700ca182cf9d1dced4b24832531056a817661. 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/TCAGC2262138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578866e222eade3e9f3de940a9784d4b803dfdaa300be237a65d57e7946a30a2. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/CAHQJ2322482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764c9387542152abbcf46a19b0da9ff34738b4b1973b71a1a54c5ece5225ad88. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/AUGBT2344392.