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 0xc2fc9c6b5b9e28be0c28425457e827ae8632cf4702082748d9d2d81b163d71ca. 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/6a08bb7f-d753-48a5-8234-039e7cc8f3ca.json and https://artists.proofprofile.net/proofs/artist/6a08bb7f-d753-48a5-8234-039e7cc8f3ca.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 0x33ea9911e76990259ce5c764fc6bac5a16ace859ade8773e24ab9384d5835289. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTAX2325961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f5cdf086f046ad98555e4492a5c38d731c6bb4a4ca14656257b1f1b1f1fa15. 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/QZWFL2389347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b83e10469ba4b28174116e6f6e379d841dbfd19d04d54807b141764a0c3cf8. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:01:57Z), 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/QZWFN2368819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbfb00789245b1d748bfeaafb2d255235df45b0546a4b0925079fd54feb9306f. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QZWFN2368821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20f6ec0b2eaef29ab6ba8108c1bcb11955e6f38aff08b9abea8528d0ab714b4. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZWFN2368823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234bf32175bf493afddd495c409dd72a4c5b13c29657db229603fc615c56eddc. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/QZWFN2368824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de27c5444f11ad309c0e0a38fba59181cdc5adb5400816e77c355591bdd3326. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QZWFN2368827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4a801bd85f246c4b30ceb10348c66734796772aac3beffcbebfae0942da35f. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:54:49Z), 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/QZTB72412353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe518dec50b9921f19a80351b075292f4264b57461d0c8cf80d23506316d9a532. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZZ7R2484936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34950ea6adffce00f0ca42718af1646c611133d2e7a0e55a2c4d7037bcd97e6. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZZ7R2484937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ac54eb24cdaf48bf127fbe24f5c9a0826bd32ded9347ab91fba50a63cd5422. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZZ7R2484938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5798529af681f68c00a4486024b0fb7da047632299369852b5cc48076fdbfdd0. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZZ7R2484939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172cc44c27419762777123ee25a721c989f8fc121574ef94f4d9139cf5841f5c. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZZ7R2484940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60aa17b572974cbc84416750e178c0ee371f39b25834f53fb30e6bf1fe87e985. 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/QZZ7R2484941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba207904664e34341f3bf4ab07629ca4ae1646b8d6b3921e49c8c66de9d2ca5. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T22:04:27Z), 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/QZZ7R2484942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98999c79fe9bf0a555f118e35662e9b97f4662f2401f815de858273f43173188. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:24:59Z), 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/QZZ7R2484943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a64e3f815263d2741949966ab3c6b368de42832bc27eee2f739a4af7825d2d. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZZ7R2484944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c440bc7503c5acfba5b52d6d5f763c59eac2775e06bfb80b9a16e8230f22dc. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/QZZ7R2484945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2677c1fb78b67a7468dd5db1c369bca80b42390774b7da83d7ad465b162fcf4c. 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/QZMEN2565162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34d8b3cf8127b5cd66b19ca72ccacc137c5b39e9f4a7a06bb8c109a4f19c74b. 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/QZMEN2565163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09010f376be82879659ce92c9cec916ec8cb803277442d3f289e5fd3d9bdf23c. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZMEN2565164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8824adba2b1a7a201333e67768d1264aa4294cfdd77042ebd47a063fe449572a. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZMEN2565165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69c55bf047990aee17cde240f304fd25777c354686bbcd7378b50ebdf05f4e5. 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/QZMEN2565166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba19f3ff948c87b2c7325c6b7c8d893abfd83efca15d2a5583c4a574b4bd446. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:03:01Z), 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/QZMEN2565167.