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 0x01e822e2583e8aa31b1513e4d570efe56272703f2ed636a5183e5f6cded4c30e. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cbd3bfe2-53ab-4fc2-a81b-7ed485536081.json and https://artists.proofprofile.net/proofs/artist/cbd3bfe2-53ab-4fc2-a81b-7ed485536081.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 0x739919849d0734a05d0d0e48d48da11eb9234b875ad39236f8f6619dea253a28. 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/QM4TW2372974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2f2eff8d5d7a459ebee597975614bb1b606b575c79a90c09e308f46219855c. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/INO132101737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be982cafda0673601b61ce4bd58cb249f13656f6eb3ecdad537ffe5fcb4f61e. 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/QZQAY2491213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19df3e473d4ee774298e877310bd65fdaf62d0865fbd5dd4fc8d0960b6e032a. 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/GBEUE2400207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0fbd98ef465156618b95632acf918954ead7d3e787822fe70a977b53ad9b99. 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/QZSYP2471711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14604075900c834909760880d0b24f4acf2a557f59a7eacdf57e36640600bcf6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM6MZ2424566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31cbba150a2478b3540611b7a2712058b1e25ccfdde0874e03a535f9bbb541e8. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZK6L2308204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f0f5e4b25c111b6ac1013ffaad6128c5be6b25c2daf5393878ed556926bebc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTB92217639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3915f7f5d1952841c4a85ad42ea3e0bdf06c964101cbd91bcdb47b9a7f881719. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZPLR2291321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c8000762469c2af25ef2e252388188de2f6a087882966524c5243ca15050d5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZFYX2280275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09c5aa5325eadd4c3bda78f4ce26cc7b0b796815832f4085958b552eaa88809. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAFS2154384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ff3c2c9390f9ec4615c7ce1d0c2bf803c6134ea041714184075f66871f5f07. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZDA52161967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc944bfe9603f91ffc0c390c5159f96a541a78509c7f738263188534192d297d8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZHNB2027248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a3ddf532cdf9f66b2e27a1f5576f0c7bfb249b21e8628cff8407c8efb14f07. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZDA51974072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9baddfb3c1a5c3511945f652458d7ba055dd69fa44f323fe1325bc01568208b7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZQAY2477667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64924f7e9556fdcad92135d06354f1e2e5eea91f6f278af34458f28f45d760db. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZQAY2487182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd3eb577c84265ab3282e1b5eb5e7853c420322cfc4ad8074f36ab5579ef187. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZQAY2402692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070420a4321ebe72daf40e62088faf00e9b494c6a3a8863748113c1d41517d02. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZQAY2305336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116a4cb6f1ef9929d11f423388db4a7816affc65d67a3e42293afea61246167e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZTLA2458578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45930c3c723dc487b1ae86759667d7564f0e10804bc3de28c9c45cc578767ab. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZS7J2374520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637a6008f77b88f0a125613517a7c455b337a6b257b10abc79193fd3b9c8d090. 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/QZS7J2462855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f2068baffb32fb911e3d2eff6eeeea8ec1e309f868c0b19cf4b82dec095c61. 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/QZQAY2438280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d0b0ae6a976effac47be2783f5a3bf6e72ab4089a92ff3777838ca29821cca. 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/TCAGE2256373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea4c006840bcdcc7c1422315e4a07c1d9ee7d916924f98bd01f0749a38121ebc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAGO2208472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5125801234741efb9dc67531fb4c7cd8e11e1779c226866196022df4d65eccac. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAGJ2299511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505ffce2600e48fc8c5cab4c77917cfa60c59c35e2ab4df1612c6ea738f73285. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCAGO2208537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51d50f02b0472fb14dacac4f3fda3ccfa534ad6d35de7a4f28d3d39ef0b12ec. 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/DEG932101671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793baea258036b9fe4edb031cc0f1b02b1c104a1f2b017fe72eef3c235be498a. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T10:07:05Z), 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/FR9Z62400608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf016a80fec36c3d784e208aae6adf62670f2dcdd937322bd2eeb23082455af39. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM4DW1836581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73498fbaaad9216212e8c16b7ece60136879b917be964fa86f6215d8972aaee. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/INO131604940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812fe1a415b8a576b74c61ec505054082afc4a5a514bd6ec6f37c53144a9d81f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/INO131604941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2d64307705570cd053165ce074f1f49f69c8bd87b2f741783e1e51f7cb95c8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/INO131604943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669d5fd96ac50dca82b410c009bfb07dddcaac63b33c9e660da727d269c5b89d. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/INO131604945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ed8903a79d5337e9d40155db505e6cedb8a822b7aecdd8c456fb504d78327b. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZHN51997447.