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 0x6d8d93c7f3f655d794ee6de72aac80f9b0905c84d10387c3fd01e26511ad8475. 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/02e9bc95-7378-4b72-bd7e-062d31fc68a4.json and https://artists.proofprofile.net/proofs/artist/02e9bc95-7378-4b72-bd7e-062d31fc68a4.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 0x9c6d6237ce4554f271cc65cd024b4087801a7da1e44109bf12ee804ceddf2436. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T15:16:56Z), 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/BR33T1100068.
Chegança Feminina (Edição Bahia | vol.2)
Capoeira Angola 2 (Edição Bahia | vol.2)
Ladainha "Vai a flor, fica a semente" | Corridos com Mestra Janja
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f3615bb7ed1946428f092b456a0bd455e48eb3e880ddd8fad111963abd2982. 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/BR33T1900103.
Ladainha "Toda vez que eu dou um passo" | Corridos com Mestre Poloca
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf36cb21eee2969bba6df3d9f55e72a34d4d2a067dd8553c7413d92e4ff9a66f. 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/BR33T1900104.
Ladainha "Sou filho da cobra verde" | Corridos com Kayky Xatao
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc277332709b5bc342dc47dd3200dd2743663498e426504dbd01a610ec26dad1. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/BR33T1900105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c8bad33158f03aa4f0ddab1511dec33aca38dbb0e9e309d110b0c7a8c3c9af. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/BR33T1900107.
Capoeira Angola 1 (Edição Bahia | vol.2)
Candomblé Angola & Caboclo (Edição Bahia) (Vol.2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad628b09f5ae08773891953a1f575128ef4ac089266581a016891352ee80e2ff. 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/BR33T1900072.
Candomblé Jêje Mahi & Nagô (Edição Bahia) (Vol.2)
Roça do Ventura (Zogbodô Bogun Malé Seja Hundé)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe241e4162b1673eaf0d07df49b4c7a24050519112f3211597e64e35c994c17. 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/BR33T1900027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba3920b6c318e858bee8e0c0ef9d52fa15dc659402841959e01fc972eea3478. 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/BR33T1900031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f94c217586b9b20785abdb2e06b2b5ce295dcfed5bac110b3330627e3881f4d. 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/BR33T1900033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754d0b89694f0f7e70ebc778de7cf208e1ae948f3c36964d80acbd31c291ee1b. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/BR33T1900034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956ff694735c0b62e57db0b855a0d57562fc0a9030513d07e86b0f250b7757c3. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/BR33T1900038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85fd8ed5c00fa45a7a655caa9444bfefe4e47bc39ad6507ff1c727a939b5198. 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/BR33T1900041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463147960f4105314b5014f8e8de8a8df0af5ed594a413e89b701cb466d10ed1. 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/BR33T1900044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e50ec0b4230a0555b2b5fac5a6021f733e429e0683cbbebc51228162cdf6fa. 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/BR33T1900050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e97df9b947b2826e1d17b33f5e9585efe4841dc04a3ecba667fb624ee4d5ac. 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/BR33T1900051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0dbe3ef854a378770eaf8902956e7aaf8c80f2c3c09eb00145a1d16446e9fdf. 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/BR33T1900054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d5c757974042060da4060c4c350c2cb219d7eb08872dcbb15764a8267f5d5a. 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/BR33T1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2eadc9b650ffdbe2c3d6fbe160a2f91112859ccaee8de139ef5ad561aaa7c8e. 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/BR33T1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbae0ce401b2e70457d6680d47cafd6c99a37135b52eb22cb8c9836645db6555. 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/BR33T1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1647640c8a77eeec175cc75b4db2c0ecdc9e00283f0beaf9b955e65d3618dbaf. 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/BR33T1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7285d38a02cca81fd1675594f6a3a3eec522ad227c95867fbdabf9ebee4924f. 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/BR33T1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04635f3411441feb65f4171c914b76f325ef87c6020a3fc0d8d6f2e177513bf6. 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/BR33T1900008.
Toque Alujá de Xangô e outros dois toques
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb66b00e2c8fa86455c8eaf40b30daae8612fbc812b21e463d3ebfca0cb8acc. 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/BR33T1900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234bdc2257283dcd347ca6be1da5a07b29b1bddd0dbacf75991f14bbe236888c. 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/BR33T1900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b714701a52165abe9d34039045731ec04ef6c326c619e570a36996abf372ae4. 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/BR33T1900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668f50b399b1ed39e02a4977caece919ea6b0efb47b96fd983f8c5e81e03c627. 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/BR33T1900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11abf56d63d980b54d0e6f817232654174f734b65192a362c4c5b96729b7108e. 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/BR33T1900018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f950e917034ca7d2daab5f74813a5e5e5991cff07e59fb7937e0f1f51f7dd18. 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/BR33T1900019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf5a85ac029418a37520bef72b2d01e99227c1c33aeba979a3558faaf6d143d. 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/BR33T1900020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8432685187d0132b512d79ddab71a59211c4b69d783c32afaae8e15472fbecf8. 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/BR33T1900021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd364154c0b8023f887bb099afa8c6cbea58aca6003d9080f3a01b47514c4ee. 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/BR33T1900026.
Chula: O rebolado que ela faz - Relativo: Quando dou minha risada | Chula: Pé de abóbora - Relativo: Meu dinheiro oiô
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e16551920dff9d000e6d77d6275048e1714338a6bb889951107cd5d6639aebe. 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/BR33T1700024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c0ef6a82cb97189f263ee247101cc8031834ba1e312c5a98a4dcaba1d10297. 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/BR33T1700027.
Chula: Ouça meu palavreado - Relativo: Aprenda a ler | Chula: Viola ponteada - Relativo: Vem cá baianinha
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1656be2ca96dedbf8471172157d9afc91a64ed2637ed1ed8b6f726df84491a95. 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/BR33T1700034.
Samba Rural, Batuques e Tiranas (Edição Bahia | vol.1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc410845a8d4c02af33ff040d5867a60a0981ceb0131b8b68d7c85559ef1fb398. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:19:49Z), 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/BR33T1700015.
Bendito de sentinela: Senhor eu já posso entrar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e8e93e9e9d5709a9c6002da4a10802113bde17b1d19db228c768b320df501b. 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/BR33T1700022.
Repente, Cordel e Embolada (Edição Cariri)
Festa do Divino (Edição São Luiz do Paraitinga)
Folia de Reis, Adoração, Brão e Calango (Edição São Luiz do Paraitinga)
Moçambique (Edição São Luiz do Paraitinga)