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 0xd51410053303c9a343c027e40e67cd5dd402a729b1919fa3add6f9260879915f. 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/9970b1a0-a84c-4fa4-87ac-7a47daab77a7.json and https://artists.proofprofile.net/proofs/artist/9970b1a0-a84c-4fa4-87ac-7a47daab77a7.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 0x211265dd117fd31886d23fbb4c14827430868d884ed104c5ae59ba71f16193a7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6N22490732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62727bdd8b676f7d95b277a14af851af6eee8093a0791e029d991f791e8097f5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BK4DA2326708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78aeac9cae3f758a5c36bf536a4c9a9da8a022f027308c87f4c7e3afa946c027. 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/GX53U2431987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc11ce055119be7af03c5064118a136d977eefa7a3f79956c6600b1df58eb38. 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/GX53U2373512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339c6a6e6214d0f4d766a3a583d3070c74fd8b216ec1b807182ae20c9bac19f9. 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/QZTVM2423110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98708a705c0aa6658453642174985c933bf4919f7780e968a441f10e0d98d2c8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBMA22427278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3205bd3a2b3d8ff69d60c0ece31bba0c95a3c620790a6acffdbc13ead46f80cc. 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/BK4DA2413941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb49899b8f64db35eac3f7374b831dee5b05d676fe85881c87b7394bbf3b6d5. 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/BK4DA2413028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac925561b8c449f4430a932e49edb62a5219e2c5f9018805cd77a3b5a5a5c368. 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/BK4DA2405993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26a373ca00c74466ed1091285ecbccdc360fdecaa21892b248ebad5455c0ac5. 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/ARG991042150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe15fe420ae1bbf8a195fdac5dd3f470987d19297dd537256426500416290281. 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/UYM123002282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c463a279e1bb0a15d4db1e90cf506ce793eca2ff15c8477a3534c63de0a20a. 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/GBLFP2396852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0415cf67c1a53d85b9ef7aff50a977886d99530683d556757c514103befd206. 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/GBLFP2336739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57940a12c9af8277b0a43ed26d81c5e5021bbfb0a50714a41ca3a224a5c038db. 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/GX3Q92392373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb72c3db165ed855c1eb13b8cd42a45c536d0c9abe15cde52f0bebca396e5f909. 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/ES7431800317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f282228afcdaf81c0cb3ebc90c210a4f89a03dab238bc0f72d42cda63f1754. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SEYOK1776168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ccc6392b7488f525b7518fc5a06ee5dce603b705349d6bf10c648d6c809f9b0. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T16:24:14Z), 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/FR10S1666637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e987f4bb9954456eda1855968c50637f1a16266fe7d4ba480b2c25db55ec7a. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/SEYOK1530411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554105b120de8b5af9ca7160149831c485369bd5e5f3e82f5b2f25647c59d13b. 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/ARG991047856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f506523d179ff40610a1c222ef7a399e81eb29de329f7c2e2a5c4b02b85da9. 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/ARG991046480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80800e9e1ffd38eaf1f127972f87fe97a659c40e9ef6d10bbb77b93c12963b9. 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/ARG991043012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e05a8c2d55f97f30a200ec506b649e0eb6839a5921b43908f7b12d5e27aa13. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ARG991035449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca710c67918d778e0c3901b2413b7696b9df815db195b0e7d7b5c4c77a841bc. 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/ARG991040199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26a373ca00c74466ed1091285ecbccdc360fdecaa21892b248ebad5455c0ac5. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/ARG991042150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f94760fe500d388ae73216b3be7f44835e1b4af5a99ba4bf513da3bbcc0f10. 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/QZES92057721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86329a38b9d73d712d645b4fdada08397bbd646ac823f72b21fb975554ae2441. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBLFP2502607.