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 0x4376a8d45a18e0d6f9730b8fc8dc86cdfbc509938cc9fdeeb8076a64316b066d. 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/8b3896f4-f82d-49b3-82bc-e94f73c15eb8.json and https://artists.proofprofile.net/proofs/artist/8b3896f4-f82d-49b3-82bc-e94f73c15eb8.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 0xdd23f3537b14801f0b85e54c030912bfa8c2d54fd87bc334b1ac5d5fd76f6fe2. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZES52284391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a619581531eb70eacceb9f82a093375d80b48f363d4bd29a34bb8c86239eceb. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:37:14Z), 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/QZHN62268152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70cd9260ef5844ee991b757ebf04df1bacf1d84ce087337e5a208a02be1efbb8. 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/QZHNA2293692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a52f85d367d40358ee31d03d344198c6ef36a7c00e91fa106a465cbf750c11d. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZTAZ2240969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2527217f1566f4a8fb602b55457150767e0f60e6761a08b3a629df5b2a4ac94. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/QZTAX2288289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55640ca5913cdbd9f6d49cdbf08657c704ad77a715488d875e863a3fbd5739b4. 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/QZTAX2288290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22619dcd11952a19576a5112984b5c87a52e26aeab6b23a39c4be7b509453a7. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZTAX2288294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5afdc3bed653742bda6d091abc6c2668e6e0f67cbbf91e4ee588347fcde67aa. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZTAX2288296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a629047ec8669edfd718a71ef5529fd000633c527c58e180f93ff49f660297. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:11:19Z), 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/QZK6K2316072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc082d9351c2be75d6a4a65bf3df4d276f45b3655c4523f25b483c5e9fd5ba317. 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/QZK6H2390727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7cc978d05cf00ab82c03582b3c571b0b247f1a2a4913d9cfcef7f548ac3622e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZK6H2390728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed9d845f30769b5545d46c2ef222962148ebdc7c0933de32682437847280f65. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZK6H2390730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b2fb7274ff1aee2b200617c8b3deb2841684741b9053e9e224bb3373d3ce87. 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/QZTB72363281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502fc9b8404ff4a9915bdf642ed5b076e3b61e377d2ea37b63189f4a2c824f1f. 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/QZTB72363282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ae756868d2a0686ba97825de95cb156ad114f81dcdd9d2bcc6511b84f3edd8. 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/QZTB72363285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a75c7cdd5bbd8d7f17c0652843e8744c3238d68e502731636ede12af71345e. 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/QZTB72363286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d4c5b50bf427e5277f1e804275b51435d7a4c5c454c9f32e9f8d25f96e27a4. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:42:39Z), 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/QZTB72363287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x200d5afafcbec9d19dbc27d388e7d46d529be75c2f83afd50f10c86c841b8d78. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZES52438737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0627d44ef683f53da0e62c1fb4507fdbd7d108fba3e49c260f984ab5279015d. 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/QZES52438740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb5e217a8c0a37a22cc577245e6a2148554138e9c3b7b3a25049f32761352c4. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/QZHN42438213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d40a17118f476b169651cdc362893e82561a1c970a0ed3489b049919ce00bc1. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZHNB2401083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d0f45d40e439d0344e96fc87461db73601c664e306b015a0e1c7ba7321198e. 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/QZK6L2462708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2a2c9c2f7eef90f893fefc16c9b1248396845c94a5ef2071640741280de443. 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/QZTB42467181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ebc227eb5a419442d0d9b4c07c9e962f51f76d505e9509ed3b40fedce7d2ca. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:58:01Z), 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/QZTB42467182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc60b3b9719a2bacb52794329040311a9c9cbe57c5b4e9400ffa36e6a2f3c34. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:25:14Z), 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/QZTB42467184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe52a8c82aa488fbfa5b5ac89d84a61ad6967ca1fd56564ffa799207ea492db04. Chain 2 (Bitcoin): anchored in block 958752 (2026-07-19T18:51:53Z), 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/QZTB42467185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf872fa0d890e38e9af7330eb4003dccfe4a0af7cef83a88c6bec9d82cfe30feb. 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/QZTB42467186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcdc527b7ff8b7fad32d2f44427a220da20f0c06a95e68b5e35a4e0f210e4c7c. 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/QZTB42467187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07092341d9063fdbbe5ebce7f617ac205cfc5a408221638e91cee4cc4aedc2d8. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:08:23Z), 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/QZTB42467188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51bebb35656eb66340a9be4c18e6ce0302fb841ca74e841509064c301dc715ee. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZTBE2424023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a31f2a481550e9bd1065b6b494a9d495680babefe719b88044917bbae576f3. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZDA42529676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61997bc488b924ee4e77e04aacef2ab689d8f9b90bf7283e7e8ffb5dd86e6dd8. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZZ7M2597982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf2ccee76652e7d72985b2b7272f6a5d89a3ea844e77197dce33049f593d186. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:54:07Z), 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/QZZ7N2571207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a012e2937bfe418e0c471dea38a354dcbef9c6d7c89e06483a1fd432d68bc5. 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/QZZ7X2503254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246fe2896e4cf38e90752ef93aaba1ebb6d0cc96b968764520d477f6c1541a95. 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/QZNWW2302497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99bfda601a172170fb65cb3ba24b56502be2465e4ada273c1ec387d4fa58c0e7. 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/QZHN52384892.