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 0x26ad08f4bc4afc72dc6e24c8ddde7780ffafd7adf02077484dad5935580adeed. 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/a78f1a38-57ca-437e-a825-f2dffac5b364.json and https://artists.proofprofile.net/proofs/artist/a78f1a38-57ca-437e-a825-f2dffac5b364.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
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 0x2705cb899f26ada5093e3633b04738b45c7adcfb1190e418ed34f40cdbb18be9. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA112430448 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b93de8c42e53b04fc596f044aa49af6f07b0a811756df04b4654364aa6f74c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA112564057 — a six-check JSON result.
Ufc da Putaria - Igual Murro do Mike Tyson
Aquecimento Ritmo Brasileiro - Fica de 4 Mexe o Bumbum
Aproveita Que Minha Pica Tá no Óleo (feat. Mc Morena & Mc Magrinho)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5679384a6cc1c516e2d47b6d6a0c306c38e49d940de360c55a4dffffb4ce58. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES47F2401192 — a six-check JSON result.
Vai Apanhar de Vara Sua Safada (feat. Mc Magrinho)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62666130e6e8e204c21ffe60c6df23a6792cb5754d3e4e27437a4268869bca56. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES47F2401193 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f790dceffefc7c8522e1408cd608435239eb2717c774e7c9d66cef42ed576b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES47F2300891 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f753f90d2f7dab2c55c122bc1672d8c40a3f48250324827a296309eeea6574d. Chain 2 (Bitcoin): anchored in block 960305 (2026-07-30T20:14:59Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES47F2401306 — a six-check JSON result.
Medley Guitarra Viciante (feat. Mc Magrinho)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5878c6b14aa0944df792fc547fe6e47b1c3d9909870e148aed24adaa3aeed0. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES47F2300393 — a six-check JSON result.
Nós Vai Te Pegar Firme (feat. Mc Magrinho)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b4fdc98ac99d0d41447f8b966f7e61c16c7797ea5d2c37d3971cde4026c5ea. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES06F2300573 — a six-check JSON result.
Vou Bater Vou Agredir (feat. Mc Magrinho)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202a72d16bdeead48ec15cab775cff97f9329a3cedf9685d11e88b5477c0760a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKGEH2400004 — a six-check JSON result.
O Sacode Devia Ser Assim (feat. Mc Magrinho)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583f74a5afabf5199c949e03b1bddeaf8a56ddac03ca387ddc26115e936643d0. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES47F2300889 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd4ce3f9f5b0f1996b289cb0c0b893862edfea8ed514dd4db71114632b6cde18. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES47F2300899 — a six-check JSON result.
Elas Quer os Menor do Corre (feat. Mc Magrinho)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a72fd0f18fc8c6575cc40f43064f8d7c7c13c56c3a967bdfbf056770bcd9c6. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES47F2300903 — a six-check JSON result.
4 Formas de Transar (feat. Mc Magrinho & Mc Morena)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f101d04e7b681294bfa70dc48bfcc9767ab7f5cdd15e16a9edfeb2a366b881. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BCXM72200033 — a six-check JSON result.