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 0xe70fb2d20f26a5a257b7126b35e61b31e9d678128d768e1a83c0302f475480b8. 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/c942f1f5-94db-488e-bde6-84e27945cd73.json and https://artists.proofprofile.net/proofs/artist/c942f1f5-94db-488e-bde6-84e27945cd73.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 0xd5b9e1bfde8e66b07ae00bf403ea51396f33ee6792b6cb8ee740ddb6558eaf0e. 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/QZWV32395332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be6fc635685b4fc28f8f858550152a7898a83eab68abf715f53c8b7c3edd165. 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/QZ5FN2359503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa141400858c8386a233d3f879e08cd3f5e98d4565360bf9935eff124338326c4. 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/USLZJ2370647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff3b2da2140b49811157e8602882d33e39c1bb7ec6857b7230d8e7e4b041242. 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/GBRKQ2354356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032f61c7c2906353ef3e563c0e899587551b16a1cc08316b2ee7269a2be15ee1. 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/GBRKQ2354361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e40437f8832c8363277d3ec68b1a6faa6e34c368fab49df91823e69a8a15b8. 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/BCXKG2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe64404be2f3e51adc7a66af0e613478365e0e269bce25e291d6634bfb09784d. 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/BCXKG2200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7bcfb00671263798227b89ad58aa677f7240d58b7bda08cf81619367d101864. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GX53U2021939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c3586ce7ee6ceac001f1fde05dc55552efc6478cf229eeda4a3d1a961465b7. 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/GX53U2021942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe680e5c1efa40902d9cb2ca7c823f322ad85c45080bc941a905a69369b41f76. 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/GX53U2021941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2175bf763cfd95f8f5ec6022ef3039c3761c47dd3a8547d712624701330f4e3. 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/GX53U2021945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9a65f2e1e7fc5a526e866335be4d6ce83d4d0b1a758ca9c86ccdb8090bd6d5. 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/GBLFP2407721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e21b6af0b446d7b1eaa9088f639d6ce7a186940d7d45ecb0503bb9b5c5e6d5e. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZTRX2375183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c871dec6e1207533d7074fd8365b23ba3aa00a5b38e91cd951661e48dba8b8d. 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/GBWUL2390548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e9447ddf5c43f69b58270c68543fa672c8fd25d1b771f20bf0e9476f5adc68. 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/QZ5FN2307610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8370eef117ccdc0efbb202f4551babb1f14c3e286d1b5c404fbbf72213d21bd. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/QZWDE2223608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82db9b86989de509d52218b0d8f55ccaa7815fcc9a0a53a3f88403eeffa4a2a6. 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/QZWDE2223515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae02c8a0d92a18d7db2d99b3938e5a68f5f34be4937918af734ab0a45af5693. 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/QZTV32225667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413cdc3dce91a15527113685ce3d929ad8cd09afe07bb7095b0264615799bef3. 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/QZTRX2267103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ffe9e3fa6a1924d96a8371c72a3c03cc3add7079283bd06f7ad85043c776982. 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/GBWUL2284299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199e69ef5f65c60c1b0c7b674a0acd938b24731093b590e1fa34130eeb336594. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZTPX2251722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a57356f1a4abbe10d547c494f175df70c5fab8c6c0c42dbac023ce384e493b. 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/GBWUL2207983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1bf82ad624cae3331613c15a45835f40a40f5a1a00cc5fb7fd87bdd7b42c07e. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/BCXKG2200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6450c1d8bbe52e075cb2243f842979d3a5207560a11cf0c8c26469e3b6ddfc3b. 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/QZHZ42221647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e58a2db4e957619551f7deb8b069be5b24b0384cfcbe1299ad981f5c7d29dd. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/BCXKG2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244b625af40ccc6cda36b01713bd423657800b46573b52e96ac2a8ce747d6d4b. 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/BCXKG2200002.
Eles Falam e Falam e Falam, Eu Mostro o Dedo do Meio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce61a1e162f468b2fa71ee0c1b6b9f403bbb645c9f61b5436a5809fa8d0ca71. 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/BCXKG2200004.
Tenho Orgulho das Faixa, Porque Eu Não Copiei
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3859b467e837a37104437fcfffa602178a0d46d126eff1782a011b77f9f7d923. 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/BCXKG2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0db2b439fd2f836bd2172204d7235c1c816cc818693b2de5ebf62521f73bd2. 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/BCXKG2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18002e18bd11a3dc8795d3ad26d847d897adde6b5144bf4ee8f186cc98eadb2e. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/GX53U2031753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f4c00de4e0313b1cf4caa1c9f9c81275c1fd4ae853a53df48be30dbb36f142. 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/QZNJZ2116593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e057e998d4738988cc03f892b25b681da322bad37685bf636a81120b49de5d8. 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/QZNJZ2116594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b0d7b6b5715b28f775e72aecb9d2a50dd0284bd27e031e400e39275c9ad69e. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/QZNJZ2116595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb804470789194fd88665c905a66a3629a5c4bb95abc3ff0e697beaa4f76d6c5. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZNJZ2116596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a853cfa85f3c6a1a9e90765e8a1f5c652b6ad7a413c7906b848c499a4a322a6. 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/QZNJY2143252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeda924a61bda5fb62ab600dba8648ca51d67b1d0a01eeb5e92486992c212328. 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/QM42K2295921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04bf0f879915e805de39dd4d49e2debb9625a750bb0ed9c33772c1e3c9b994f0. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GBWUL2281900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c586894e372a177d952f7db865f1133b8602bc806803e657be4da1cf537cc7a. 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/QT3F22402860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a390d28e9dff215dac00fde8c533e6eefc465000a88746293a03d63f6c4768. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/QZNJZ2386464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46001f824179f49eabe7ca3f0d7659eaadba44b8c9ec725132552984adf9e0a7. 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/USLZJ2396457.