1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xca997f001395d85ed8a3073ad4df1711fcdd7848e76b45ce1ba6cf0ae87a6c63. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/93cf9027-cd39-4258-849d-6c714c86a01e.json and https://artists.proofprofile.net/proofs/artist/93cf9027-cd39-4258-849d-6c714c86a01e.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 → block OTSBitcoinBlock must exist at that height 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 0xa9c18af3e9e8507683efeeee3e98fbb971634ea7eea62c59997c9aca383e815d. 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/QZWFF2398192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a018bcc363424cc1747e1ba1ef7c3e2bddbd935a3dcedc64d7aeed183fa7669. 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/QZWFF2398194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea9ba96d6931f130dc506586e43b38301e68dce10efa43d1e49c44a05203ca1. 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/QZMEP2372316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd557a426d7a565b4e6e9c9ad6dc8dbf5754a7d39b00f095e99ee5bc0fc3a4792. 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/QZMEP2372323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78141af43abefca9742dff25efe968fee79d60a717496d41d0bd2321fa9cbfe. 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/QZMEP2372324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a6dda94d39a545e324a87d763d68cf92b813bbca75293ba1b83590d14463ba. 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/QZMEP2372325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba502634bffc7ef450f8834be5ac41f3bf91c865ce200385a359c20379de220. 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/QZMEP2372327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3deae18aa70c40335a299006de38cc600c902fa6bb8f9312408481b23040c9. 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/QZMEP2372329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2eae2a4369b52d1109a0b92a3119236560996140ba7212e20f4244b933cdc3. 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/QZNWW2203395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55caaf2a1ef4b3e18a7687eb05aa40ec0d1241c63572f12fa6cd0d8d885be657. 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/QZWFN2481158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17cb23ddfbe50398f4d1dbbb61451ffa141f747c001a7070de92a076e6fff2c. 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/QZTBB2401092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x683ed73360ecc1261e951e901c656a6d7b92b15c0154da07ac1333482f35c18a. 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/QZTAZ2481570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4348f37f9237d0896ba419bf6cd993b3f9246799c494432aa22aef4afea624. 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/QZK6G2428005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9d0a73292fc11f239c95ff9601517acbe71114fd13f9684d578f25095e935f. 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/QZK6G2428006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b013c5c4ae97fa5ea69c2d1f82b42b5af39c421b4d7598986a340d9b34932e2. 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/QZK6F2413309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc82a8ce7133969b1a951d7b55c5cd0f0378a145b7dd899b3833443764839472e. 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/QZFYY2428022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf7b91b70dfd190b73aa47e01ed5d2a79165967369a71368954b1b4281445a4. 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/QZWFE2327582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc533005f10c53a7c8b1d68bc9e626782febf40b4ab08df6a5c5e94a18b33c6c4. 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/QZTB72383114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb681668f2ab8657c0b41092f56f0cda839033a02b84f7114c5fd8e6adf48fd7a. 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/QZFYY2386149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40bbba9e1114546e1bd85a5f39ae2a02f674a89b4b4f311714d703ab848b2672. 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/QZFYY2386154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67abaef415af066ff9eb51afa9b6f9ad42b16c15921a7ad14f79a9e149b189e3. 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/QZRP42102899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe697475cdde2f520abc9e7373a080bd72dc28f5502f4a9f08e41160492a0f7b0. 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/QZTBA2307799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888607d7562938bdcb3f0be718d01499657e4c9e7caaf544bd1d8d7753608aeb. 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/QZTBA2307800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c12dd937052bb796425cf9cf51a6a7b1ca5407c19f4b1ac258fbf0c53ed5f8c. 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/QZTBA2307801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90bf662e446a5ca2ff64317062c7f094d8b30a8c6ee14dc00b13c632814b2c23. 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/QZTBA2307802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e2c5d41a1f1d0ccda55a90ff8faae8fcc67fb59117e18093896f8091dfccae6. 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/QZTBA2307803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8fdf2fbf5187427a4bdaa53eb77ec65186f68ef5fdffca06eda4a893ec7b13. 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/QZTBD2419384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ad68a49919b7b9fc2cbe37cc01b775c1efb6cf1b4eff4280c0ae413d4c5c1d. 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/QZTBD2419385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9127cd438b6096ab1f440934eaf91d53ea30d4fbde58e28908de8c3e89726322. 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/QZTBD2419386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a34ddea6126f53d786cfbc5fed091fba4c85d294283ed6c56da8499a84fae1. 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/QZTBD2419387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a679ff77534fadd64db00a9db888f543d47941a799e3cc00569108cee7d6f3. 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/QZTBD2419388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a68bfcd30d45147fe1f41930e4b5c61e4c8c6d878656534dfa4bf045d55945. 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/QZTBD2419389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4848cade0eacef4741a57cbfb895e874602c77f93deab0aded586cf4de349d1. 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/QZWFP2369544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9378249af1ac1ecc5d05d841c66c83381c7d2921386603192908d95a739c9d6. 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/QZWFL2449117.