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 0x97d8c472d11f557ee229ff38fd507aef52dba2b7230ce17e27b63e3289699ad6. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/07629f74-34ec-4643-aced-7e9248b7c31a.json and https://artists.proofprofile.net/proofs/artist/07629f74-34ec-4643-aced-7e9248b7c31a.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 0xf0b504320d5af57a1987e010a7bbcdff458b886a0494d81a8d939e41cea5ba5b. 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/ES71G2330239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad923e947550bf22f062bf8f72522baf3bac2b1a7b51be0f24a98780b2d8054. 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/ES71G2330244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00538d54f86420618196cde165969a651e119c04209308e6b64ea3e6b9f66482. 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/QM6P42411920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc235a40b543968e309a514906b93068d71b949ae64c9ba68ce47b97af2cf72e0. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/ES71G2308804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30963f24ca3dc9b7351a24be21ad4f58342bde74c52a5d544e4cb233534a1c3. 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/ES71G2303311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857ec968716f06b746d376bcdc566f91a38070b4345f8cb35cc1c24874f56a6e. 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/ES71G2209532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91dacc1bcdb1f2939d303949d8fc56cfc946ffdad5dcf0132fab7012db8ef0f3. 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/ES71G2143592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce48befcaea6b3838554e6069f5b4309a4ed5162df167fe882047ffc93bdc58. 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/ES71G2138581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd937fb10a145c5ef78a80af7c96a63c2bd47b8f57244ba1dd81e88ec062c9a24. 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/ES71G2144740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91dacc1bcdb1f2939d303949d8fc56cfc946ffdad5dcf0132fab7012db8ef0f3. 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/ES71G2143592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f222bfdab7a51f4fa4c26e7ea7c4a2579457b263931d367efe985d212cf5c0. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/ES71G2114604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f3dcfbc0857c893ac25bd6167e3ce68c8edcb0983521349ef31ba2939ccb02f. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/ES71G2114603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0aca2a35f405b4ecaeb54d40b5791db3d8ed0a729f3fca02122a923a5d7aae5. 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/ES71G2043440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19495e0084a0c480a230f499d30acec1c4a2ff892473b5b7dd0ab6aa90df44a9. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ZZOPM2230461.
Çambra der Huebê Çanto - Parquesvr Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1494357d0fe8ab17e0a34b86ea64c061877e820adba07f469c82df454030ee95. 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/ZZOPM2230462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac745b3d90747700e4d475cb943f7e2a9ae81503e73ed995206f0e4bcd5b6b0. 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/ZZOPM2230463.
Çambra der Huebê Çanto - Novia Pagana Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7128a19fd30e643959613d9a1ae8e9a07e170bcf00f9f0b5ce556dac7af2581. 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/ZZOPM2230464.
Fandangô de Carmen Porter - Andrae Durden Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d897db2fd2297f6238025341755bd9fa7709ea3e2857a806792b593c0414af. 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/ZZOPM2230465.
Fandangô de Carmen Porter - VVV [Trippin_you] Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123bbc47f2a920ecaf9f9220b76d91c7251445260f3eca55c4c05471e599b797. 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/ZZOPM2230466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a9fc72fe2c6edfa9dd5d3b31d341edd0af74533d62124cf26d1aca992b36db. 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/ZZOPM2230467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23fe4c6ae295847f7e396e086707d830663ff20450e6da3a6a2327672c49495. 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/ZZOPM2230468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9eb9552e6704e84890520e29fc52b5704b0da9a7e4ac5df310f1d6c71bb25f8. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/ZZOPM2230585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdceec97ed7e90478039d42ebbe1a54ff2a85b27a1e454e57b8a2bae131bcba8f. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/ZZOPM2230469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165bfc6477fa725bfcffe0c4d1c505b550715f3d872a3e382b6eaa43efa03cc0. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/ZZOPM2230470.
Pascual Márquez 33 - Pixel de Stael Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61c4fc88a64e9675c01d62fb4b06b865bb3e8984618c0dc647f4f12be8bf860. 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/ZZOPM2230471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33c5a1ccdc2496ec3594adcaff337b7d8751d7c7c587d20519ffae0f0ddbbf3. 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/ZZOPM2230472.
Tó ba a çalîh bien mamá - Broken Lip Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8519b10f2fa5a1101437fc3e657ae6e26b4106a8a0fe4abf5f58c9f6e635059d. 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/ZZOPM2230473.
Camelamô naquerâh - Manul & Energy Man Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb656b79d520b1ec95345bc76303933731425adacd0dbc66ade35d630a6e555a1. 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/ZZOPM2230474.
Super Acho - Un homenaje estremeñu a Los Planetas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8d40e3d651bacf88b3291d129b1c4edfa155f8318d2561ce2450d59cea4c9c. 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/QM6P42411918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255645b41a135c145a3be5ba023c7b6b453d0d728e0e6a984ebeeca32eeb3008. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/QM6P42411919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00538d54f86420618196cde165969a651e119c04209308e6b64ea3e6b9f66482. 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/QM6P42411920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ccca8d2e2add8cbfb100788a5bf8690c1fe63df23a9a2dd4f766aeb3084dea. 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/QM6P42411921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51cde15fefc589b190181b9b7652a3848eeb2df4331944519041c701fbcace31. 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/QM6P42411922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4333a1095fe98bc1b75ffbe8e4c3c4703e6ca62dd35130a74f05ae498c607b4. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QM6P42411924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3419e87992198a32eacf8a305603087d79e680927cdeba8a89e8c99bcad9f7. 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/QM6P42411925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0ae42a6b495b9bc5302fe6df9b43f14a16fffca8e34d346e2d6ccdcd426278. 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/QM6P42411926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f326fe0f349c28adc4d52830bbc911e29e866c3f49f6f899fa90064282cc3be. 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/QM6P42411927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8bb2e935402c86fa73493e0f44653c7567277a78e10425582acb75c5478f40. 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/QM6P42411928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed080e11d66482ba15841142424a9286ede80250c3c4f3547c4a5ad64e7edf3. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/QM6P42411929.