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 0x6e5e3193dfa674e3de386009123bbb3119f686c33f12e319d8bd1ec5a4ae8666. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/831ccd2c-452b-48ef-9b58-de02918f7114.json and https://artists.proofprofile.net/proofs/artist/831ccd2c-452b-48ef-9b58-de02918f7114.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 0x9e92370b681db2743156df0c88a11ac94fc7461cca72ed2053b6f43c3e56af8f. 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/QZP7F2552736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7e9bd51583bdcc547541cf754a91e9ed85276a765c9c492e3af44f532c368a. 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/QZP7F2552737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d455cfb95d1f9a6e6a38a8ff3d731925bc09c86e7bcd0f0d50ed3be84e6c04. 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/QZP7F2552739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7533a53a213b7e568f1de63eaebb0f11dcdead288f9d6c64b58f1dcb4815e90a. 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/QZP7F2552741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0200082c979362fedf5f6616985f0cf7a4dbc283affad1823d9524700db79556. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:35:40Z), 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/QZP7F2556749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d7cb173f2d14acdb12fe2b032c8d06ed55f29e92b3aa13b6420f73eaa8c50d. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZP7F2556750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d63232babd0403fa1414ce96b639c5c6433ca074c3de047c3235963b776b2c. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZP7F2556753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7fc814e05e41f06eea4ed37502a78df228851181d7d016cd5af31d9fb9dd51c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZP7F2556754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc3edef3c06ae94b73be077630096645c4cc5f46bda5743c3f6e50388399006. 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/QZP7F2557026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb857a2a8de5d84f808fa7366a4406930745d1852ec7dfe8c70e6140c64a2d65c. 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/QZP7F2557027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e704e15b1c72c0c5c5b1cbbb16e0ee165e77faedef248e8426b8fef74cd2991. 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/QZP7F2557028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd04e07b9456de51d974987b6f01759b478ddf95def46919160799fdee5b640b3. 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/QZP7F2557029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f924496608abd1bad936f2ae8ea427b9992c853dc22892023748a9fa5b3440. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZP7F2558734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b50249d7d88ad204c9008746e6916724cb9be9ea346d088f2487fb32366a522. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZP7F2558735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75d7bd90406134e97f827ab84576018032e694c2a8ab8975cb069d459004684. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZP7F2571176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd449a19cbc083cc48456a72bc141df677eab1db4cd1648d641f3dc423e103156. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/QZP7F2571178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4abeda47272af4fe087a45778e52eab51a9460208636d51cc9f3d4afa64a1699. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZP7F2571179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c02be74dcca630cbd85fdc8e2e4c3beb4ee0bd520f3321ec6d96d707eae534. 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/QZP7F2574201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa845c26663ba0b777cbc49fba48938c62aa92c1cf5091fb33273dd087e76e47. 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/QZP7F2574202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6f5c06b664b079e534650cf78fe9a0c56681b6cdd46c91953cc6d2902d92c3. 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/QZP7F2583634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e0e2a54037660ca468f5614c2e9d07a9cb2b2b072ce03ac46da9e3143d03d1. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/QZP7F2583635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54133fd5da8865145176a29e71606b244f90f0fe7bf9bdd41adeb572329f8ccc. 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/QZP7F2584912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x939b73064dce64c200dc8444574ae015926ba40165e3ddf0f5c22a402e43b5fa. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:52:02Z), 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/QZP7F2584916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7ca1e939beea3ab9da7d0a4221db07649be41233c29604851bfe6b58d456c1. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CAWK52504958.