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 0x11b7880a1d88b9d2a9ed4deefa59d4d2e98a191dbbbed37c0ad090151178ac9a. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3e05858d-1455-49a7-86dd-af648f51df4d.json and https://artists.proofprofile.net/proofs/artist/3e05858d-1455-49a7-86dd-af648f51df4d.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 0x91918351af5394c015220d8e7ae1318943873318df8f5d4b06d2bf4bc210ade8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEG931150275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8f6299609ebd2e4400f635d8fdcd0873221c8aa7aa35dc45f6f1cd27fbf5f6. 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/DEG931150276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97cd63b9094dc676f3e9a333c63675af6333eb7b522c605a75613dc57f78be3. 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/DEG931150277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e0aca7902c7da3a3ce846f3aca63e5caf220b19a51abefd36b8a202c53c670. 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/DEG931150278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee4dc1cddf4d47f5827945add5d7a1fd30e39a16bc21e40c30e74380a68fe16. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEG931150279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49019e053993c99281d01363221f7de51ee16807a2752809c548618ffb0508bc. 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/DEG931150280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff8fc09abc4f7cabda276c71199fab4b590d27d6896c30d9dd80e935ba88691. 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/DEG931150281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a99e236ffcff03128768b05183a4d189e9cee60d5f49e2ddfd176a0501c100. 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/DEG931150282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8011c40d0c01ba3c2983f75e77b58a59e5393ebf02b7964d8b1d36b0caeb5bbe. 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/DEG931150283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54d15dea7cf65e8e876eb5ed148b1dbcf8b6ecea38ab855066796db6f45c2f7. 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/DEG931150284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed21c6ee9a5c5a4351c0c08e34100b2833fcc4edb0ee1a6aa2527ffae435844. 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/DEG931150285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b2d5bdce5cfbdf5ed9ed7017e9700f942c552d0bc954782d5b0e2ad3096f25. 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/DEG931150286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc4f34702909ff37e9e5f313d7852225c0fcb60ea29c560477988c8ae81ab19. 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/DEG931150287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f7e106e56cedc05f0ea0760ae454dac23032ae9e241b811cba3599e9b2ef21. 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/DEG931150288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee254c0ede6656cd4a77996621a7a170bdb3501043fbc94067533da8b8e239ff. 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/DEG931150289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d2a41b6a0ee68262b66db75fdce7732448f6f97c7df7b4f6075d6a8b6eb345. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/ZA56E1408011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd629e032338bf6b95fa06a854983dc77abab0406c43b109b940088c95a38abb. 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/ZA56E1408013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x673038a650f8ea6faca47f2e751ee511704c20a1b6df2ea117e6943c8a106179. 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/ZA56E1408014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9691547140a6b50e5af07c69605c6f65197c9cff00a8590f3aebba481e866def. 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/ZA56E1408015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b30b33eccc029d6a3992054016af3c6edd9b075d576a1e2294f4110d9a7dd97. 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/ZA56E1408016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e279c521a06e1682cb73f58c10384d1f46ecb8534cd1c71cbce7fc80a576c9. 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/ZA56E1408018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a22dff93aa7591992f5dd1289905520d2d85f4c5cc9f368dd96bff1f92fa690. 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/ZA56E1408020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3883c133830e02ea797b0d061de52b9e2499013af070b6273d36499397a1c13. 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/ZA56E1408024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5640b2ede2cd407122bf4e4ac765787247c5f5a6459f765fe5ceffd1cc7d7172. 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/ZA56E1408031.
African Rare Groove : Rare Funky Songs from Africa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d10d9b983e90672c6e61482127afe4806c71c1db1af6e4fd39b56b9ce3efe9b. 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/GBCLQ1200175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23cb4e8213136494a1ef12866d785c155d1f3e34d1bffd8d5bfda3b90ba6add2. 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/GBCLQ1500895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27830ffaae7255439d962e7cd19c85685fa4d92c0543af17928b90f499ee1aa2. 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/GBCLQ1200187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56736109671e6c577373b491ee350976def85f3ad3867f0105292df05d6d7f17. 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/GBCLQ1900038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7fe9b1c9e47c0754c124d46c044fbf41397e411714f07bfe907324cedf42169. 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/GBCLQ1900292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b08635f518647c598662853225f31d0ba2c4ec1515c1f5fe65db7509f628ef2. 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/GBCLQ1700035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7908beb4f5fe2722cd5eb8a7e1f7e6a912996598f913688e069f3ae5776d2b4. 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/FR6Z71700173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14be3843a0bb63c898352a0cdce4543edc84b976790d1eda2217b64722d6c644. 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/FR6V80500934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358d4e9f4f4a65ab1a0b642d209635d69295cec41135bccf1ea0080192645ba9. 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/FR6F31925020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcfa58febc035f56dda1daf9729e8183b610fc98b857b1f6a7412916b758e602. 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/GBCLQ1700039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d8065c69d0aeb13683dbdb06ebbfdde147ad275191baadbb3d7c65026b7f369. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/GBCLQ1900336.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa58a16c01009edea1b98f05acc639513efa1cf96735b704b072ea605c7fb68. 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/ZA56E1500068.