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 0xbb525f83da6260a1ef0ea363f5cbebee417a4a0ce7ff8d6905239e59ee96482b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3cee93ae-68cb-484a-9d11-b286aa9a6653.json and https://artists.proofprofile.net/proofs/artist/3cee93ae-68cb-484a-9d11-b286aa9a6653.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 0x2ccaf1a53264226db6a60c1efc36a1bd15487a56a43ffaddad87e6dcbc473f2e. 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/QZ8BJ1700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238e1a257c145b7dbbbfb3a0416d560d2b067056d20dcd49f0a09effac288c8a. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:11:02Z), 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/TCADX1817957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461c76a8277f52d957cfaf341af10bdf37812e4c8e52da76966f10da1a40f289. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/TCADX1888936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51bf520cc6e816e5d0cb8b8f43a3f13fad49d1dd3483861db73883148336324c. 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/QZFYW1983760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b7f240200972ab078767a3a1875678aff44383ea58dc9395a2c241df12e3fd. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZFYW1985106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa144a14023adb49bb7e5bf11c73cba5acf79b9d87dfc561f4a3d85b136320632. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZHN52202188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e84936a44a6d5b2f44c3a9095217103f0a406d303d25940ca80974dc275b1a. 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/QZFYZ2350354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d0abbdeb94fcfb56d3cefd2c90ffb742b6b4dd7a82ba0a22d3a55c10ae193d. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:30:13Z), 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/QZFYZ2350356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30efa988ece38c186d87e31baa51f044abff2ab44ccc1ab6609276f42eda2081. 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/QZNWQ2183733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f35db01b539297dbd0cd6d73cdb9969826a03f4cfbfc719708f3d6ab82ce742. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZFYZ2350358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4d3b3956905c377a58a4a7910708efa863674cc31598672d07da107f68b9f8. 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/QZFYZ2350359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0104fa5edea5924916ef69b11e4f6b88f79d837f24ce2e9ef5bb7ef9d88237a1. 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/QZFYZ2350360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be76f27cacaee62ec0903f86dd1777dfbbb1e6e9b11254c12956a01c39353e7. 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/QZFYZ2350362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7eb60e87384c581fbd3a16206b40149905f2f6d00ab6e1afee5863197e60a2d. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:35:48Z), 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/QZWH32400094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdfba177e62f7e5ba4d9a628a8cbbf7b97c9a0d25443fb739369ea4f4ac60bbf. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZWH32400298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37ba09eaa3b5b7f970f4b6d2b190c800501540af9a78df1dcf75c9c5b0c4d7f. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZWH32400344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6379ab8291c77591fc1e92d426f9466ac82de753435c2801e7efa169de9748dc. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZWH32400342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa9c5fadea5de28f5f040bd9db3f3837155e1270e7a90733e0a29f5f2822c59. 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/QZWH32400343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c533491fd4263822b84a067d575ca14a6b517d76ee09083f33ff6204a252238. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:37:22Z), 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/QZWH32400347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5c3115013af0336a802ae7556f358bc0835b39c626ff40b7b85ae89c100d09. 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/QZWH32400348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6170e842ff80f2fab1806bfae63fa9221046ba4d2bd6e7fea15704cadc943e4c. 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/QZWH32400143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae4d6f8413d41de77f5f83925c7afdda57d39c8c08db53781eac9854bd3d1b2. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZWH32400350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8bda41b4170b4ab7572f17fcf38b1398102e5ecd64cc3d9916653a1e50c2b7. 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/US4AB2300001.