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 0x77accfba5d1011e70587cb27956797991358412e9b971e215b9ee12735cb0314. 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/dd227c6b-c83d-4467-afb6-a5f48d3f536a.json and https://artists.proofprofile.net/proofs/artist/dd227c6b-c83d-4467-afb6-a5f48d3f536a.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 0xe58fce046836da87777929035ff5105e3f286ee26756fa635ca9d7ff13cb098c. 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/CZF671102103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b16e1f7dd622331cf3657194b8a1c601107e30d6528c29600aca8f5a27e9cab. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/CZF671102104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc86a300a8650278a553855e5df9d8083657ea065f3bdf68e851fb6657d42895. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/CZF671102106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4eb4eee2b992a5d7c14f594e7888c822bb4b216ecca8f2611153f4529ed5c3. 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/CZF671102108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e27217c5e4a7fc47a562dccd6b52c4eb1fd9bb5f06ec83e08851aa9d9f0402. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:30:09Z), 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/CZF671102109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f66b04805ce2b1bcafcef42d03830543844b93002830d6a49628eb7334ee93b. 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/TCAGP2286559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037823d2371043358672f809d46e8aaaa376580eaf795a3de4d627c3d455fa01. 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/TCAGP2286665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c83b1257937c83327ecf879de1cb639aeeea8d6106cbfc9aab2ade08b867389. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAGP2286677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e3efcdaa3a3cae141dcdce0a81e2dc7fe154bbf7fcc8621c62eb399a67e1f9. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:29:51Z), 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/TCAGP2286686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d7ea82ec2e54697674b07084c16a0e16c359bb3712306288058bee5f6d995f1. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/TCADH1702508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26aae4e4feef77c0b2fe2dcadcfd7674b3668626b5823339a2f9d802eb96d7a8. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/TCADH1702515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf59b02146fab6043984c5978154ef841b0022262aeeafa322e63863c1ed226d. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:35:30Z), 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/TCADH1702517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7789f49840cefd01d0bbfd0a237a1d4c335e6f855ecefb8b874db661b07cef9c. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/TCADH1702522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e4b08b29934e4e32adc95cef1727bcc49b0746cb8b503280483d6646f6f9d3. 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/TCADH1702523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c61561da61529c95d679a3328d66ed3842b0a4d3104ee482120b51246e9c79. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCADH1702524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73bc9cba141536bd023936ab49e81bd921ce2793f3a614e8be56233e38faa36. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/TCADH1702531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0035f3250daf8fe5ed8f3357d427780b053f60376f07c5c9f2731c3ab5d1fa2. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/TCADH1702535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee0144759d8f53359618fff98e042cac3c543821bee2163cbfb50b91a3a8e32. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:12:34Z), 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/TCADH1702539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b65e3f54298e08582e387d1b13294bb94ae905ea2290f2d655e1cb8d74a862c. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:59:42Z), 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/TCADH1702546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2105e9bd941b34fa48c1b2d4233189bf92c595ad65b4d65adcd06063762c6eb1. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:54:55Z), 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/TCADH1702548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9af1eb181b25fe7e704b5735afa562d0392171b240c44607f60ea0a267d2b70. 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/CZF671802202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e219b4e9f3e0ea8c22842b52273f7e61aee62515612281ec5c9aa176b607617. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:28:24Z), 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/CZF671802204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2c75fa497eff0abc42320a6ff03b3eb4576ad15189134657f0731a8287e02b. 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/CZF671802211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6542ee089af649c31c0a46036998700afaf76c2181e7316a606ae7d4ac7400. 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/CZF671802210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96031b548627cce5797ebae3d9baa0d25dd7a8b69d64ba79e7e571871a6c074a. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:00:27Z), 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/CZF671802207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3378215c8563c2393ee75a533808edc4bada543a5c579776d7657191a14e11. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CZF671802206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec7cc35b59685f6cb0ed6c79bcb46a4b2e1dd610c0ae080c023a697616ac9698. 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/CZF672102302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0193dd097c48907d561109def4b149c6f4a1ef85078d1fb20e0873e72e704f4. 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/CZF672102303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc85c9cda36aad0bb6ac53a39b437a3c4ed37c41734ac9de65b9f1891b004cdb. 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/CZF672302601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09886d28fcacef7e48a9b7039edd80b9c7dd5f63280c4382be0b07b986769d2d. 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/CZF672302701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3e3f4931e86fe1594d12438a70395cf97d70863c61c46c39f3870c2ed8aba4. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/CZF672502201.