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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a481a9da0e3e975cc2514512c049b237da761ff66d2401bd61de9397b04891c. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/abc1b860-3f18-480e-a618-6538eeb5f511.json and https://artists.proofprofile.net/proofs/artist/abc1b860-3f18-480e-a618-6538eeb5f511.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21f14158206c7a3d003fe11ee5d431cb8ce4a7fc75890492f0e2d9a6c5900f7. 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/BXIV82444411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46bb205a340415f98881f4f2a94447a9777fbaad7a5e99e5f65726a373882dda. 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/BXIV82439623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed376682de2da029c6137614c48f5564025f889393131382b61ed1545058ff9f. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/BXIV82461734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551e8becdafc91843644508d9bb427fcbb8a05defcde1911d50739e23dd9af64. 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/BXIV82445345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd93f1e94cc5ad50235405fd0fc4eca4e775e33b5c3f8c9d3e78633b7438ed2. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/BXIV82448830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0b4dfdc23a976c56592a93642f5338bfec140695c8a3519846e01f44440983. 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/BXIV82262383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368c69d5b825d9b21a6da193cfbb5a9273393c276e8e75e9f3925eee20dd57a7. 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/BXIV82206360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f307228c9ae199fd3e3785c9bba22bff69714736ed0eb07626c2462afc65f3. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/BXIV82296532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e7f5de4d3fac1128266868875092f536d4184999f8b332756a19241e452f8a. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/BXIV82298387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa197e6cc8f60c0bb35562ce9899d64fb47979e5c956583bb3331f59617454b13. 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/BXIV82239193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771af914dc27e7d0e76344b971ab0ad32355b65d44c0679525b7109a86438de3. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/BXIV82268856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e576460959e8df135df9a3bd672ba5faaf9ba14a00f85c0bf7232327554a72. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/BXIV82244639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c6e267426d11fde474f686c958dda54129a823d9d63ef6fa2dcbd6fa8bac5a. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/BXIV82276139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04171865794a2d00a5cef7cf869275cc3c4cb1007046b15fa65d7f5403c97b5d. 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/BXIV82247764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f286c2e615b6df5ff39f08bd9a61b106e921e58d65dda407aff89818249718d. 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/BXIV82215087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfdd24df9ea8b214328738b92ba6d1aa2218dc1d70550c69567454eec38eee6b. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/US3DF2225132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44371b8f4402eb30cc46d54175f3d1ad8e1ca7a23aa3f91481d3e4bb32adef19. 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/QZS662168227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb22e6773e5dabeaf638af6951f33fcf48d3b581154009bc946ea4214ba5fc22. 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/QZS662161980.
MTG CONEXÃO DOS FAIXA IPATINGA E CARATINGA
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6261f3dc2d1041141ac10fcaa94500778469a594e19e8942e878b384ac1726. 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/QZS642108976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57284fe0bbbfd7b53979148c49fca86e7d7fc87c4a8954ef84017854f80a738. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/QZS672158004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a2bfb515a89928b78b3fa7306dc499d557c1731abc6d7716c96a01d7d7ec89. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/QZS672139867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965eb81cafe5aa50e7a8b2999e46fb349894b33d7347ab4df11e99ea9389d00a. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QZS652167853.
MTG AMOR QUE FODA FOI ESSA Vs HIT DE VERÃO
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66772f2ef79f5bd1470a782539cbbd32c405f3b7d836a6e57ed3b8f3915ddb6. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZS652150366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4754e93eafe024ba4ba5e7473ac2eac27d00b664afd6dd2a89dbae88948ed155. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QZS632147118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc780e6813862b66933ae9184e70434d2a10b802ff4d362d7216b8944d5598531. 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/QZS632107808.
MTG HOJE MINHA FINALIDADE É FUDER CTG VS FICO LEMBRANDO TU REBOLANDO BEAT FINO FODA
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe98fc76bb2c2f727a9eff8526769b4bd304e6412fa6f241d9125b950159e80c7. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZS632131599.
MTG 7 MINUTINHO DE PURA BRABA PROS CRIA DO BETHANIA E DA GM
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8060cbf600bc4c0ca05cd27d129a7c5528cfea64f2f57d01fd44da9fb808f44. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZS642126961.
MTG TOMA NA XEREQUINHA vs ELA PEDIU PRA SENTAR FININHA
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1c189f4ce7dec4f6148e5e1a0302e09fc3358385abc887333b4a754bf3c0cb. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/QZS632146635.
MTG QUE COMECE A NOITE ESCURECEU O CÉU FININHA
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc3e0caf1d3389ece88f615aaccdd48f5509b04de0e830239b7a62689f5a07c. 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/QZS642182277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9dbea414f287ad2ba7203802ba07c119384731889628171dc4dfda13af4910. 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/QZS642100409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474188c14814d55a698cff7b9e68179aeaa9bc0c353a2448d66a241b0d30ea8c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/US3DF2137046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90fdb709f50f0cde5fb3f6c606f7204f89b98fcda96d0569b1702b23ce7b4405. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/US3DF2119662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28382911cd2f9cb5a38a78fda82caebf1c78c8aaa2ffbced735a40c056198eaa. 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/USANG2185336.