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 0xf7479e16e80e3dc9fd44a291a828fbcf5416d0baa09c6fccd7570e85602a185d. 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/450d84c6-424b-42c7-8950-f8655ba7e21c.json and https://artists.proofprofile.net/proofs/artist/450d84c6-424b-42c7-8950-f8655ba7e21c.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 0xaafaf05f4312b7240eadcae4609d738427b0641450dfdfc8a1c2a6f0bf352402. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:12:28Z), 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/QZTB52295113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c1b1c059124b463c5e114298b2e9d5ee0fd894c0d6bc75068b118b86d18116. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZFYZ2369125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa12e84a23c66231d8219ffc8e17b5913a2cab28d1f598fc09d186226efd1385. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/QZDA52305372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d272152ec9cd8082c4204dfafb7ca626d722e0c15de130cd7a5d92154b423c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZES91915912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d2c936d0f7d5b0c8169c1164de7980c37bed6d0db089a84ff02f9604ee1f68. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZDA82376995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8ff9e92edace37f681aa6149e728b98c31229b8ec172d1519ba5888133c83e. 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/QZMEN2313811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30a82e59cb7faddffe07f7c130129c8c972de5b1c7a016c211b246196b515bd. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZMER2350082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea387a1ebf07f7e67b241e4b193786392b0399ee142b6b93a19960244acb4610. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZTB72330946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c00285148dd59e07b180b07f3764b7ee84c93e41731dd0b593e4ff990c05afe. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:16:20Z), 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/QZTB72332577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a007264fe098d817c06d0cff495050579a5ad0d0728dd46e771810d95c78dd. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZHNA2454529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db15efa8c7cabed5ee4870735a16e60aa84edc32b5b872e995f4950669e6910. 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/QZMEP2402858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6236c24d62640e9dc53c9718649489396cefc6790c1126ba8720166176e480ad. 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/QZNWZ2474084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c00285148dd59e07b180b07f3764b7ee84c93e41731dd0b593e4ff990c05afe. 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/QZTB72332577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d1573cdddaef693ab0568aaa8ded5e63d8e1a46dfa81d00f0412212abcce8d. 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/QZTB22351793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa12e84a23c66231d8219ffc8e17b5913a2cab28d1f598fc09d186226efd1385. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZDA52305372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8ff9e92edace37f681aa6149e728b98c31229b8ec172d1519ba5888133c83e. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZMEN2313811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81724e5b3f203411e7d64c202552a86f6ed1505d4c4c722620ef3bd595dbbc5. 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/QZFYW1942083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d2c936d0f7d5b0c8169c1164de7980c37bed6d0db089a84ff02f9604ee1f68. 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/QZDA82376995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dea370a796ef0c3dc1bdbd98b9731fe0769746269df4af659a4a07b4b97c40b. 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/QZHN52388478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d70d362559b6a11986050ef0b3ce6be6fae9f4350b3da174226a72e6732189. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZHN62321112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a4eef19ee1a055ca9599f2fc04ee72391c5ca039adc856fff3d33ec8abfa79. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZK6P2311156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3830cd4f805908e07771ae7763810800115740b9e9a58011f208bf3fd6f569b8. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZFZ32453896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaafaf05f4312b7240eadcae4609d738427b0641450dfdfc8a1c2a6f0bf352402. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZTB52295113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d272152ec9cd8082c4204dfafb7ca626d722e0c15de130cd7a5d92154b423c. 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/QZES91915912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea387a1ebf07f7e67b241e4b193786392b0399ee142b6b93a19960244acb4610. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZTB72330946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b041fa8c79dbeade4d19b84dfe6fd68578d9478a96710f84ad81b28e5c3a547. 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/QZDA52439582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db15efa8c7cabed5ee4870735a16e60aa84edc32b5b872e995f4950669e6910. 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/QZMEP2402858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30a82e59cb7faddffe07f7c130129c8c972de5b1c7a016c211b246196b515bd. 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/QZMER2350082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc5e5a1409ce5263fda6db34f1c056a178981fedac43378b7b43b756d723313. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/QZWFR2410102.