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 0x8c50f35125d572c9b24547e68a5e1692dffd950e79d613e0cc57601432439fa7. 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/d20f51d2-2189-4f3f-aa07-3adb111b5cb2.json and https://artists.proofprofile.net/proofs/artist/d20f51d2-2189-4f3f-aa07-3adb111b5cb2.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 0xd1c2294e4fbe868f8a6bf7a758595796c58816a64e7af2b2fd3f35640f5a5f34. 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/BXJB52000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419847ef433a2277b61966ed4f4bfb0bf29a5c9dec4cb4125fe27a7f5043b7ec. 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/BXJB52000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1325367acb963e6f84f336780062588a9d4e6654e6fa5b7c525429b2b1a51147. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:04:31Z), 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/BXJB52000002.
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
Juliana Linhares na Gira Geral (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d31cee1c5b2a2f62b3ece2430a83a29f53a504655484986ee4bed55cd4428ef. 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/BXJB52100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6eceb821198aff0caaa79b9ba9d49d08a98b4fd55ac9c01923b1721afa8f32. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/BXJB52100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53e27249a5be5f0ff314e9dec7ee632acaa28f9fd386b557088fb8c65220f33. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/BXJB52100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224ed59a5cb3b81b173da740278ae2978d99efdb2acbbd62e2ddcf13cb1f0dcc. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/BXJB52100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6429a63e0a9432bb3b839e571eddb9abe0adccfb8a8297d43b7c320972413176. 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/BXAAU2400002.
Estrela Matutina (feat. Juliana Linhares, Daíra, Pedro Fonseca e Marcos Mesmo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c024675b142f143973800eb5c0060c50eb885f203281cbfa6f418b70f828725. 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/BCKON2100064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45da4d03164276d787ce9ee94cd35c149850126cb7ac3f5ff7757d641c5ee7d5. 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/BRDEP2400132.
Bombinha - Ao Vivo no Coala Festival 2022
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6bc10e7ba786b9e91183b078a8cae2d9efa5ef38f90eabe0c374fa6ae5da60. 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/BCNMM2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5626a9b6726665b6a3db710751a54f88bdc09e1239d967f59c8afded18f89f09. 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/BRDEP2300122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6429a63e0a9432bb3b839e571eddb9abe0adccfb8a8297d43b7c320972413176. 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/BXAAU2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075422109f7e4905eeb35441cc1a7c992ef9aa1f42c165a1ae8446d7b1f5d385. 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/BR2SA2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa7fcbd5f7e9c2db559b863f9b569a78b228865a50093bf220078fe016c3f10. 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/BRDEP2400224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92efd589261754e3c83a51886751ea65d4cdc6ade3a15b9cf3f0af1647aee146. 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/BXQK02400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa8873807ef1a385a0b69542df352b5a60528bed92320eda05118fce4e97803. 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/BCESS2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4d9241a106b80f7a7bcfa76ce057585c0d69aa070e93e73993cbba0b1ad4a9. 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/BRUM72402271.
Coleções Porangareté, Vol.2: Feito Notícia Boa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584fa5480fa5b548752c6ff164dca22e00da44d018eddb3a30a49c9be528eed7. 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/BXPNG2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd9ceae492839ab4c874e56d822ad682d09d486dc33bccee95a4338fcf84b72. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/BCVRX2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934f9adb7dcd325430bcd44fce3967d2a6499c0b01cf917b6836547f136c548a. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/BXTS71700017.