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 0xf6b7c8a400afc24eaed073124463fbdb44a5294c2dc566dc9348bccbd6903268. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/54fa5490-90b2-4943-af44-6d9df9bb3093.json and https://artists.proofprofile.net/proofs/artist/54fa5490-90b2-4943-af44-6d9df9bb3093.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 0x28321078f30838229ae74f362fdae999b64e2e83a5a044b1d16f4bffc5fbf887. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZFZ72281995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac893a2134174c0d52a43f7496a94cc6b965646beba9b70f7ec54458d589cf2f. 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/FRDKW2303753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ecb49a4699039bd6b0edf006e109ab777edc13bae3125db164a9eef33c84759. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZZ972436982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905791c434eb19c7dbcbb1b11c7259a4cba261dc51ad3501829acb5bb6271722. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:11:14Z), 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/QZLL92361003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f64e5ecf1e92a88013784aaff452ea36e106913e9fe5f1c82be503e78a11d7. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZL382575371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6510625dd1067c2dbb8064a011969cf72c141a8355ab145c69f8fc60e56e7676. 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/QZLL92527577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23181b374e6d47641b1e75326d680d0a1ec2e0d514bcdb9902078fb818b2568c. 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/TCAJJ2520720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b5c64a3e1dc65987a87dc9eddfa2948a4d01f17dfe5bc905c6b88034479371. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/TCAJJ2520728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212bb2aa907e1d22656fb040780455f110c161adf74517c9a5f87dbe0c1f2f2e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/AUBEC2550220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfaf7c22af252921a15f37502dd465326fe56d2cff20810765d3433b62043eac. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/AUBEC2550515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800dcee29da82253d3c3a07654d02857c3e03ef338cf64c406811695a9dee2d9. 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/AUBEC2551931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d31a7234a55ab826042f7c6da349c356049df995b1a497b896ae5140291bac. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:51:01Z), 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/AUBEC2567810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a0e5fb15e0ee6c87a2440c494020194689797183e0dd12fd18d56d48d8fced. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/AUBEC2578585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8eb3bd4c1d88165e84df40227ed36caa1f78e0edd163ee88884bfc616285a04. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/GBLLT2511002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94f6f94c8b448dd7c26db74dde78cf98eb10a3b70b8076b123836530532688e. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/TCAJW2548993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99b083b6f9e2ce42c5b386aaf1456f2f8cc259c6217f53e5d6e1a92dbca69c3. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:11:27Z), 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/GBLLT2525117.