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 0x165e4ecc9408234639232f87da6ebbc29b8d23fda6b9f8661732e86315015464. 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/0e68ec8d-bbb6-44ee-abe6-9539b3a33545.json and https://artists.proofprofile.net/proofs/artist/0e68ec8d-bbb6-44ee-abe6-9539b3a33545.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 0x831be555742aa8f1264e50d00b4e9ae1770dc1510af75f7beda3d2a15fd3cbbb. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR9W12417721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46c1f429a7dc1f611811ccf8310c70e377dc7401b2edefd959be9f9d9111312. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR9W12417724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794dc6e9fa57cd5ed4be00bd79e2d83b9577b7c8d94da6bde4564590f1e94763. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR9W12417729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c33592f6de7f02d118ace228bc0b020c80e543780ecc886b6ee54d798c0779. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR9W12401688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648be302d4f505b4eb05faf8dcd3cbbb9e8ddb1d53de623eafff12c2528fc115. 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/FR9W12401690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f173ec0890ac595bc2a7b1210d58b7b46a809380c9fe67e27959898a5b79409. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR9W12401691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd417ab8c29b467c5eab68f38004245d0b6c35825836e006b223093802f37a52a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR9W12401692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79024823cd52db0a75769db049d2ab424eb9086b9fa4f4eb9bd9ed8741925fac. 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/FR9W12401694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b9e0c88ae97b3e0c7c7e4dea6c28ebd2ddaa131a3de57a68fd7f43b55b1502. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR9W12326793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801766eceed004314c40a8fa630058430cb50a584910a2780f85e80c241b958d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR9W12326804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038eced782bf5716f3454cc20d0d3f0a07f573fdf736baa8d174cb73b3fcf2d8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR9W12251566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x783570783b39390db3cd4c02aeb97f05b5e3d368ca694cf7631ebce20faf7f88. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR9W12251567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3146c1baec8cbeefadc6eb03bd673db24adb7cf4db781a6b65dcfaf4dec88ee6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR9W12251568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1d911481e51d42cdaacfd214884904fa7e46494e69352e38225b515e940e76. 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/FR9W12251571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b46fafd48b98bce0fc44b9c42fd573873ae4f63e72d4dfe8ec9eb0fc8526bea. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR9W12251572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e48dc5542322aa6dc44216d05c09baee42e770da8d3b484ad744c4d86e3e0f3. 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/FR9W12251573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa755ddf625f5070a187843f594796d48053cce3a9e2a14832be1fda788fa86f2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR9W12251574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285a8dc89d9296363756f688fd9a6d69dbdf3a14532e4f725c05384172f15f37. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR9W12224731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43febc4bda715319b38045caf0683a4218a5ecd0ee8193e8dee94313fb80dd59. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR9W12224737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3d134ac4895d88d8817fdddf1f09d2807ebf91e124be3e723741c17c13515f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR9W12145574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e15787db5a94c80cadca7d322ceeaea2cda7ceebe80912f833e252fd056144. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR9W12109890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e51d029d76ce8a3d44a081482d42e21167916d8995c08a78d04cdbaf67fda0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR9W12109891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92b2c9fee037673edd463ab0948ef8841268c413ad51dc0cc8221cdc3a8ffa9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR9W12109892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b5fd253e7c6b47ccdfe89919f517654d0e6c1dd107d730f4bdc4dcd8ba3e10. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR9W12109893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473b89d1a7904ba2f3c1407f7082b1b2de91095251638a24d0ad1350b37f6e3b. 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/FR9W12109894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30e0998027e99a53660f5bc6380bbf84a85ada643830203f58068a830a60d3c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR9W12109895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74fa4d385bf535845d819a0277da8b7a0460ff6cbd1438d385954bd332c1c30. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR9W12109896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49eab8e38fcaf4f32c51d958621f0173e2d3ff19eba750ca6a7496b400ae6dda. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR9W12109897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96e6252a5bf2c1c266ab4d5d69a7d0cc1030fba0183ec9cc064293ac7c31bc5. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR9W12109898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63037d7b14db724f3a117a41ce25449434206c79d03d6811633eac81cb2f47b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR9W12109899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63873d824b2b4d5ea69e20e3c947a31cc48c63613a3f51077bddcffe670f393e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR9W12012422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7880219b2206f456a24a8910785866a28ca6d374a718bd62f56f4d36539d0771. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR9W12012419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5dfb2f3ec70ba87fde8922458c05ea41574288ef54d37b3371586630ace8832. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR9W11911835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928f585e65f5d2d7712447e13b99e3f1697eea43797a70d5681b4451b9f53f6c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR9W11901365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f9b63bc66706598d8e278859c3c0b410f31fe7a842b42517d24e0500d36360. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR9W11813688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd7216424c3b7a4c8a685a5c72e2c863a3112d9ce3a8f871fc7315ce5cdbff3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR9W11911838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7644f4fc2048b49007d4985ef3775c800491e98e2b7d63403d5b0594c05c4a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR9W11911839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72607da008bcacafebf8f607ad9d337537f4d1cb4cdac344c0bdf81b6517b6d6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR9W11911840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5029f85ea72776c60ad96bf1fdda07e9a912d6fcd69532eddc14651c2941eaa3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR9W11911841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c33592f6de7f02d118ace228bc0b020c80e543780ecc886b6ee54d798c0779. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR9W12401688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b5fd253e7c6b47ccdfe89919f517654d0e6c1dd107d730f4bdc4dcd8ba3e10. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR9W12109893.