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 0xc955ae45f84168e59fe97c821e41d2be9e3d115ac76aee49c5fa3b1a96971db5. 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/d0b8bc7d-d6d3-4a19-ac1e-4aed903f7ff2.json and https://artists.proofprofile.net/proofs/artist/d0b8bc7d-d6d3-4a19-ac1e-4aed903f7ff2.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 0x994deb515ea309c20856f94324f1a3f0e87bb40a7a4b34ccb26c87eba0c22142. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZWFH2447421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081b003a57231dc022a4d402a01efd6f39b322a98e2fb011c06cbc878d965f56. 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/QZWFH2447422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e3c5f78e08504b46caa10c84f69dd3ba8fe3c2b7a772119e21c57d23d61616. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZWFH2447423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e053aa215b12877098bfc52a647799b9d199112d7a1a358323ebf92555099c. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/QZWFH2447424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93ea493c38f1dffe931723e1740c2d57a6ae23fff132e1fd3bef19f75c4c646. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:27:26Z), 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/QZWFH2447425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d39e24681d5b82e9a0a229bb3cd87da4fac42407e1df7b2b9fc087b04c35d7. 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/QZWFH2447426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb165006d65d6c62f10eb0d0357e61720c60ea0d20e0f36a1f078e4ff184fa6d. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZWFH2447427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133ecd7457fa2b5170f37a18aa09a083df2f1400ed89bf6e707c411ce85456f8. 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/QZWFJ2425509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803ab205b27e1c7133ee7ff00ffeba3cfbd1c36bdca6e1dc6440d3f96f0b80ab. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QZWFJ2425510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4ccd1dcb056d583c792cfbb3c5c2032f99ceffff675c312a5f141ef7de73a2. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZWFJ2425511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ada70d08bb2d7fb53359e4709ce4efbd13594d205e259a7f224eb8e1cf3ecf. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZWFJ2425512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd7b2870a49e9a99545205b35090bef13bac378aa485ee2869b9c077a6a40a5. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZWFJ2425513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1463008cc2fb8b7c98c4040470f63350d3be4100c033e8284fefad2f75d0a695. 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/QZWFJ2425514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0399bd64384a04eeeac27c92dc577ff247762f7426ddd6b48e321632aafea90b. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZWFJ2425515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f595f799bd598b128cd95bafbc466a48a481c99ede0ae8e6a501fe35cae0bc6. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZWFJ2425654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05b25eec151c45929728c39505807ac3241511bb152afe91f8e4868a01ec143. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZWFJ2425656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95bced744d8d0890d6d7cc991e91bddecd30e09872519eac09913b186eccbe30. 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/QZWFJ2425658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca99f05c22bc85a451d61b208499091136d8dfae0e2ce8811947af584c56005. 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/QZWFJ2425659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c3460c7b8e66b20798c31e902f5130966ec95d7aeb6f98b79ff54f0b12a3cf. 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/QZWFJ2425660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x862407cff5723638136f57f41af66e56664a1ad0cba440f98692586aaf7c43bd. 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/QZWFJ2425661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d60679b01b76fa57436eefabd6edd6ce42ceb094018be27abad37494783deb8. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/QZWFJ2425663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a1f8e9ab56d08eb161fafb88855809f66413d3c458161adf9be850009d054e. 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/QZWFJ2425664.