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 0x27eb602dc62a929b4896f9d2bd17656c7abd864c3da61e90999a6825829e04a3. 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/94e0ab23-f4f2-490f-b97e-b57f9559e57d.json and https://artists.proofprofile.net/proofs/artist/94e0ab23-f4f2-490f-b97e-b57f9559e57d.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 0xb9ec726d9de97f0e2486333a9868e4c105cc490ba3d508b5c8b38001246c5b82. 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/BR10H1100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9441b566b9b7e60fe1aca48c44c96e06e6b5bcc585ed168340c505a140d659. 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/BR10H1100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9a76e76c412797d5af41bb14614150d0ed8d65a442f6534df4759f88e8bcfc. 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/BR10H1100008.
Canções Velhas para Embrulhar Peixes, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca59b02c359241cbb9f65873ed621fdd500c952b85e20db22500033ee6dd5863. 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/BRECI1200055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460052cf1508442f89f17bd21fedeb5e13718626c43123baa91f206c2ed7f32c. 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/BRECI1200094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4dbc6a6a4f3740fcfca371f1a95bfd0e23a0e24ac959ccd8c7795fd38800ff0. 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/BRECI1200100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156868ef4852b2fcb415e9b3217b779f2efa9f28cabb8ab28ea490d934f6ea73. 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/BRECI1200082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8f424b38b38bde0051c7ac8fd92c7a9efe5334a01d48aafa3eea1952a0276f. 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/BRZ6T1300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61cf1f060232ff75d3f05d86347ef3d9ce24c4ca0b1f12b56199b4092d3c88f. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/BRZ6T1300010.
A Voz da Mulher na Obra de Guilherme Arantes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a56b0299b7047e0697bf760e8da034e31789f1ec92fa04582bd0dbeb6f32527. 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/BRTRB1200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc4bd772c64317763e3edfcf4254104efe9b7a8a3b725cca44bd6429b1b3b0d. 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/BRTRB1200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93e849f4453b5f765913fc5c12a6e926caebbc28b435774d9a72ee941630d62. 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/BRTRB1200021.
Literalmente Loucas - As Canções de Marina Lima
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e62753af727defe127eca5d7c506eb23ac39c1411aa6dcf36a4ef6746108ef. 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/BRECI0900210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34c4210c2be7b13c833480823507142273e3e2c4bd44b925fbbeb21f8b0e929. 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/BRM7H2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ffbfcf1a4a0519656378c037ab6ade0824655d0c461b7f137ce1dd4cf7b877. 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/BRM7H2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12aa38b96c7a5a66afd2f642493ac81499dc84d5eb61c500bea7e51b41ba5340. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/BRM7H2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x887132d3d1d17c1c487830ef286bc22fc97c34fb521252ddaf06ce7e3b317ba1. 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/BRM7H2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f3eff907382a8c286657f6b930a6e414d82d10c5b130fc5a1f296bf501ac42. 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/BRM7H1400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51dd07e57dd7da631e0bcec0b327ad967c797c38cb801070954e97f7c9f90456. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:20:17Z), 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/BRM7H0700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2bbf86f213e4051953f5a49dbf52f538d4b49e26cd74300cfd5ef97e40cc199. 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/BRM7H2400002.
Salvador não Inerte, Ladeira do Pelô - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d30114ecfbda0b7e2f4c1220ca10971014a24f02fb7df82fa34fa00538d87a. 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/BRM7H2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191fb0f1a70569735af02b67eebda1848cc399d0a4ae2b145b642f8fd8f49467. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX6842400120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fecc55b5ead3a7b28d273db4e0f3500dc553225a5ae5d5f3931a3da511627f8. 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/BRM7H2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41d7b213ea6b8a8054a1430c554a2967d147b83063c9c420521776220eee263. 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/BXXIP2100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d68222829a26bae36a8527ddf7b74f634c35719297aeb0d23a3aeb8ef29d0a. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXXIP2100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46546c9ed0b5fe29eb4c9e76f8cfb633f699decd53175a3b01525ecf5a53a54e. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRPBP1300008.
Geração Brasil - Nacional (Trilha Sonora da Novela)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143215c84b0bccaa52b8d8374fadce726850f406659a7cedabeabca311fb9d72. 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/BRXM91400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee617e95a1c359528cfd3e61a3dcc39bf572f6c35d5ed10578cbd7af476bef5d. 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/BRRGE1401368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ae4811ba015b63edacb6c1c371442bb56fc6db4853e840714b5448ce805df7. 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/JPB600761907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe551e421c9bf7da7ba4cd218b7ee40ee5d5ca165f92c00acebcc81cc1e4843e7. 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/BRLCW1700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5500765c342e1d89ec324582e10a99b74d94922dd9181d4aa99bf8be1be88e6. 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/GBKPL1137268.
Amigos do Meu Pai (Cuide Bem da Sua Estrada)