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 0x87a0b1cd49edf492a94b61d12301958aa88bf7459fa724d59c8606e25201529c. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e117425f-7427-4e41-8c34-6f6b1efab653.json and https://artists.proofprofile.net/proofs/artist/e117425f-7427-4e41-8c34-6f6b1efab653.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 0xb3bceec665fe5c0ea1bdb5d59342fb23e2a3dbf3786eb16d2e7b3b4bf7c55d2b. 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/QZZ7S2537027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8e52937a26c4e3b227f376a2c91a1ee9911685f666dde828799bd6e8087ad6. 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/QZZ7S2537054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5daa62a19f22afdee6efa0eb5218cdefe2e48bf52e51e1de2dcffef544c2adf. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QT3FB2556734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb506980d8f2d2e5a7d26f69c76d141e147cabb303599a7e9a741098f37dd311. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QT3FG2535689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65285529e132c3a1dff704aa862482cb0eac6624a934a6d3f40d987fd8e75eeb. 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/QT3FG2533643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e9d7d1537190ffb7168ced1dde796c8eda593cd0517bbb20cff00209c155cc. 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/QT3FG2535709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffed990200ea150e13cf9cdadd74d0476c52ed5547b5ad61a2030d2f42884324. 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/QT3FG2535713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708cb4e8aab43cfa0daf982ff54be6605faeddc8e920f22a39191b852cd55f82. 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/QT3FG2535711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d15ecc54bf14748ec3a529ac6213201e657a2f22ea5b7153e2f1a5c03da13f. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/QT3FH2514452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c8c24bd71489758b34f345073f18eb460ffd00602421e725acfaad9a238d46. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QT3FG2535716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30bd358c163d45f75696961e4e4bb784cbc99d58ae0bc2f68ccbb8bd9fb121de. 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/QT3FG2537942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2dd12895783ea104679e0f9dfcd0b7e9a99e4a10df1c22037d1f3df31c9f911. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QT3FG2535727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ebc611a52cd20df258ebdb43d9eb6699f344f9e7ad8922d4b09d7610a7a0c54. 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/QT3FG2537959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e67d264bff10c0cc978956bd105d20f384628cbe332c1a3c713994272eb7e16. 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/QT3FH2514454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01ddc68fcef4d5c0f17614e3c6fe222031f3c8afc3ef4f8cd7faa5f7421569c. 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/QT3FG2537956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3940e2dec7ef81d6357d78b2da27d5e5cbd616a4f6b4d06e8e93c3f80cbc6ef. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QT3FH2514455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada05ffad29cadbcc576e34585d570f7f9d3d31195ee3b73c0a5acd75dc8f8ca. 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/QT3FH2528921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43c877fc0ba530c0718b8e139578d8791c1be152b58d9f6fb7eb1c94b7799ec. 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/QT3FH2524910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ddbb95978560cb4fe19610e872bc2b64c410c696e9a557d6e2988c08168839. 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/QT3FH2521587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7d480fa0e3ecedc62f35e02ce1c226d6085a97ac5c029144af63b7b9546e53. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QT3FH2525000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b468486f4da7a92987d0b9e0a277f7c82f34d8d300110a2a7de9d7dd3b688f. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:06:30Z), 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/QT3FG2537951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeed7e20f184317d9e7352672f76092e0bd21863378c9d23751ebf5fe37b6cdc. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:16:34Z), 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/QT3FH2521358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98688f4d23e9273979a65f5821bebea2db735a7b086981edbcddc96cfc3c05e7. 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/QT3FH2524918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d926d4b5761496a9dc27121d60997f4d0c46b4fa3056d2d5d83231044abd06. 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/QT3FH2521564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c62d79d4b731ba915cc46a68202de6b7257abca6b22564c128d85b67b2e4d8. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:22:50Z), 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/QT3FH2529136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758e5019eac7ab2a8799a767921d589b4f8f3070277947f88ad14f3ddbf9cbc9. 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/QT3FH2529155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7b0e69fa40cafb6bf33fc161887858aaddea0ee0662df4af9031b40abb34da. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:46:24Z), 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/QT3FH2521353.