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 0x3e6108220f27f1ba0aa501ff44e144092731155a26e8b5bc38ac7cbbd6df04c8. 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/55230a8a-05a4-4b59-949e-99982a9d05aa.json and https://artists.proofprofile.net/proofs/artist/55230a8a-05a4-4b59-949e-99982a9d05aa.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 0x13ae40ca25d99de645ecb26d7d194d9e76affa22d0d42435c73d2aca748bd561. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/QZNWY2083552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60007d17914314fb6958d7c94068374054102000c33810893b23475b1f1c299. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T03:07:03Z), 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/QZNWY2083559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14eb4365b0c39b406da8f30e622935981812e9f44956bbdd1c5f32e35067abfb. 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/QZNWZ2019784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d473ff2282739ce56122daa5a2c4ce7db126db4381021b219b3df9dc1b2a9ab. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZK6F2038377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194f4aa0ac88968ac34f0bc11c616796da002cc4815fd4926ab3d66f72159919. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/QZK6F2038378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6486064bb839a4c512b0648f706a26135af2fe84f302129f6661aec5fa48334e. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZK6F2038381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa2dc5b55ec843dcc49d2136b3f5a4ec367de0eddee0ebf7d10fab179eb7834. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:07:53Z), 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/QZK6F2038384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039dbe59aef17fd0a4ea5442707c805e59a0192a639badb2fc8a3f242938a602. 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/QZK6F2092142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed08248122f2eee287dd28cfdf871463185d2ec9f1b118a67199c598565f505c. 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/QZK6F2092148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea4e5beed4ed3543b45803c6e212d77fa8d307c2cb7029dbf9df7e422de545a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USQY51579387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe182f21128baa21b91a73ef9d93673be86ec1ad188fd68bd223d0d85583003af. 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/QZK6Q1949174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9f3898cf9df3fa71b803c4d83f9801115bd6c8b63ec673aa8b0c266c52acf3. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QM7542000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd921268054971860342fb80908a54356533b8a96eccd10defa3c7a88c03871. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:35:09Z), 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/QZDA52550532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7bbe7de327f7dd1efca244383bd6b49bede9313111e10b5dee4e7daffafc99a. 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/QZES72542140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325a0caa48d5621cbe343f059b0727efde8acc27f0aa3c859ab872f946639964. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/QZHN92562998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc538430ea5105cdf14e0ed736d747a56a8b2551f98689fabec0058963010be35. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZK6P2502742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b12d19a82e00e95a672d1af35cf3f7a58c19ee1abd0b63b23820beba65167f. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZK6P2502743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7bbe7de327f7dd1efca244383bd6b49bede9313111e10b5dee4e7daffafc99a. 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/QZES72542140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325a0caa48d5621cbe343f059b0727efde8acc27f0aa3c859ab872f946639964. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZHN92562998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd7f386af27ebbdfa210857e93b323f69143e6321e22369e9f0b6146ff1485f. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZK6P2502747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab79ad9aed364294d9267da40f9b39304264420d2e5928f96cd33b9b2eb8a8b. 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/QZK6P2502749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11287fc9d6f38fc5c03f8727e58f00e6dcaf4e74b8a2496c8482bfeec851b78c. 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/QZK6P2502750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a7ca51bd992d0d7df1e86a0a1646cfe8aa77443c11d323d109e2f938db1134. 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/QZK6P2502751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd871ec5a646fd7cbe9a636eb954ead899d588ad83d64e0bbe8f011631d720c. 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/QZK6P2502752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27723d2c51968578420942aa43800a6c2408200ce3cf0e92217810c08b0be432. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZK6P2502753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97e402f533802865009d1bf458c12a51e94561e1c243f02211394d5854b1cc7. 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/QZK6P2502754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c98cd7d224297feb8ea283b20686d80c5052435741063e07c2071475b6a9ce7. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZK6P2502755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677a2241455b3dd48536346aa83c4922959c1202f32b8aa252c54d0b5dccf061. 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/QZK6P2502756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1219d64bfd18315d467191771050e8801eb8a005b05eac9d78cb4abb205ddf6e. 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/QZK6P2502757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3929e32091ac373355f932c541b07e5a530a8af60bd52d888acb8d42d7d68d. 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/QZK6P2502758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32fbb0844156823d5454c6913ce4d37fc9e1dc52af15503b2dd542a1718fd1d1. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZK6P2502759.