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 0xf54940d5236473784ed8ddec4f5afd381c59c6491ea989162f5657e50089b2ca. 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/024ec250-2de3-4601-aa7e-ec499aa94530.json and https://artists.proofprofile.net/proofs/artist/024ec250-2de3-4601-aa7e-ec499aa94530.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 0xd103fe34071172498a03c639e9752cafe0cbdf12bc8ec039884dc9284483a5d3. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZTPX2408027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1818f15520611561c038356cdd711c339fe640b17bfb38d797162794051051. 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/QZTPX2408028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a14fd19dda84a9a9e32c9817e18a07bbd310aab5ed561eb0f9e8ad2116e4b0. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZTPX2408031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef15e13a2786391e440ae2d0169b74b86ea1290e173b0977fa5d43142d70a0d. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:32:11Z), 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/QZTPX2408032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad102fcfda9b0228a809b4ac29bf3527ca5798eb16307c2c9226af372efb7ea. 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/QZTPX2408036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e17df54ee223e409cd24d806fc165c74c963982679c75c8d2e1eefa3e8bca9. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:55:26Z), 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/QZTPX2408037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca67ffc7472458df7bfff8563eaa3b3f485d90c42dcdf3568fb718e52938602a. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:38:29Z), 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/QZTPX2408049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47c57959e978b17b29d1c073f81b0c1d62b6806c228b0ae1cd9efaf2dd4dd80. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:28:05Z), 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/QZTPX2408050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b7b63c5fb5461108dc9bd14312549d7ded456d09d195568a1c9c9b0828feef. 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/QZTPX2408051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a78420d6f9962f8c3e75eb67c4dfbbc7aa2a3f2cfb0e4e25da2dfc600a7e5b. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZTPX2408052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6430890a334761418ddcf851d94cc820c1440ce8c718cc55385ea7a8d661a86d. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZTPX2408053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa9348f79fd4274643198428bef5dfc2b6810098d4ed1ec46c4722ddab23d8a. 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/QZTPX2408072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a503c5aab587a54ca3ab1d1113b8e16279f82954b4068ad0ef64baa0ff1809b. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZTPX2408076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5fd38f34ccb0664c38b75fad5794aab85890352fdc55fd59bb1163ab67aff8. 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/QZTPX2408079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb4a273f4ea13478b76c8e95c27f089262c175d28fb3d5aa07f1514089e9555. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZTPX2408080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04ce523f9325337ec2f1e375a01cf86ae147c2d891e4503583a0ed556ea8028. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZTPX2408081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38d0417e3579e75b156716625528449a0d7f5a0378f05c3134dcb93302f0ef6. 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/QZTPX2408082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d46fb8e6853f7478f51fd812eaa27dd53e025a3935d62c862c7796b3c28dcbd. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:35:01Z), 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/QZTVM2449619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58310cb215206ac8d5df59a253b6191c512905ee2dc27f8edf079d06624f967. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZTVM2449622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ee3d30cb6ea0b7230c91397e0bd5e927c9739f10e18f8867f5acf22a3cc5a6. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZTVM2449626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb21d2a4aa7a95c651a99776528a834e846b5f78be697a8de71c8e33b489272. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:30:25Z), 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/QZTVM2449628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd4ffea0a1ad00f2dba8f748d9c48c272e40f4d1d2afeb7b9d0c106799a9d043. 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/QZGLM2546021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27d9e9f95256292f3b3ada5963056f78ab0cdd44bd1bc15aa9079e03b38da8e. 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/QZGLM2546023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126e82ad7082fa1c499596b47bdcd629c367e64697159269fc578d8e809f6042. 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/QZGLM2546025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb570e3e4eb8d7eb043ef0018535b80e8733aa540865f295cc9718c66463aab46. 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/QZGLM2546026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c3d956b6a08f64171c4242b6cedf5a54460cc6f0f124c5c6fcde48d5f74405. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZNJV2553606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed31ceba44c660fc37e791478486c4b41efe3f2354b6616a0960414e0a7a19e7. 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/QZNJV2553609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa745766764757fc0280adb4693e364d4eaceaaa1c0b0017461b67d3669ba9ee9. 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/QZNJV2553610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb23a9a5dc8a8d63c225bda5456ca5e5aefb3ed5bdb4a4f278ca4dda9c6eff89. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:28:13Z), 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/QZNJV2553615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942667d45b96edaa22d2195f6b45517487c300cca1658b7d376fc28e7a7037e8. 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/QZNJY2589968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a9803c77135097290047fc874a1214472fc4e98e1e14ff81e5f5185dd55d282. 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/QZNJY2589974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba58739f35801d5a9692c2506f2bf02080ab809a7995e5b3f2375c4edb305e9e. 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/QZNJY2589977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b190c72b35537aec543a779f932f53ce4101410d0a6d1d514a8769e653ea6b3. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZNJY2598989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cef5696622c534ceb025d5e6900f25a18253cbebb228bf67321d6d1c457d45b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZNJZ2535774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf43764e14c2eb397c1914fd64c67d5acd93de9b34dc23efc55806045d6e32e. 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/QZTPX2510565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94130431b35b9f5bdf4223275478a63caec0b7e76ee2249386b34f45f2e2017f. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZTPX2590070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd124e06b78261668457e63e18dd8d10542aed8d7f8d77e63c27c6342e08eaf75. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZTVM2546336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958334aab090b843b46b05fa373d171e0d76a6b06f819e5cb754c75c20c469df. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZTVM2599190.