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 0x4408bf063ec302ad1b2eb8315181d180f2084ebb607bae1140c361aeaca4e5fd. 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/2de76d41-046d-43f2-8899-a6965ca5f3b9.json and https://artists.proofprofile.net/proofs/artist/2de76d41-046d-43f2-8899-a6965ca5f3b9.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 0xb6af41f849965f315594fb62cb4a15d7b860f8fc27c4d08d278616e64dffaec0. 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/BKFZH2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd8f9d144d35ec35092b8dbb153d9b5e20a5a018c2a2ed5280f3666b66c3ce7. 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/BRWMB2400740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b74c544e6591842f447da5b22818f3e5c63e7ccbeb06a5c8373a498460ea5e. 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/BRWMB2400742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd86005e0d685d3f2b62c3642b5f3e9e124b09e1791ff3f8fd8e875b5062a8dc. 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/BRWMB2400744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd527e699357d19133a394f5eb11f73328aa5a4b488ce59c2e87d42eaf2ad54d1. 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/BRWMB2400743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5999aff20aff01613843b432faccdab63837c5ea51a929b947a16f123f8add9d. 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/BRWMB2400741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b74c544e6591842f447da5b22818f3e5c63e7ccbeb06a5c8373a498460ea5e. 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/BRWMB2400742.
Puerta Abierta (feat. Bad Bunny, Noriel)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7a1c07144c1b045238f4f39f81ec8cd38dd8d530c35ed17413d86c42997f1a. 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/USWL12300996.
Só Pro Peão - Fazendinha Sessions #3 (Remix)
Chapéu e Calcinha - Fazendinha Sessions #3 - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ab5febfc4d3e389ddf9c6003c301e70a1441692f95aaee20530681dbaa309d. 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/BKFZH2300007.
Combo do Perigo - Fazendinha Sessions #3 - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2c5c63d6c9c34e4fb350042314eabacdccbe9089f7ad61fc8d2bf995fd7659. 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/BKFZH2300002.
Presentinho de Deus - Fazendinha Sessions #3 - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e705aeabff179862ac692a284cc09629a82e6ea7c8d7eb85c1dbcf768873f67. 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/BKFZH2300003.
Mina do Interior - Fazendinha Sessions #3 - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828dfae11f1218112c6a741defc0d16a0f90a608be1e60b38b86cc9e0de0e4ae. 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/BKFZH2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6af41f849965f315594fb62cb4a15d7b860f8fc27c4d08d278616e64dffaec0. 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/BKFZH2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd86005e0d685d3f2b62c3642b5f3e9e124b09e1791ff3f8fd8e875b5062a8dc. 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/BRWMB2400744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd527e699357d19133a394f5eb11f73328aa5a4b488ce59c2e87d42eaf2ad54d1. 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/BRWMB2400743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f28268304ddac5a1acc59379f0e03514b00011d5aa9cdc6f6d1ca0210c6c23. 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/BRWMB2400390.
Com Outra na Bodona (Estúdio Fazendinha)
Com Outra na Bodona - Estúdio Fazendinha
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9465dc2964a9ab3868f870b8c97a21d23c46e2200349b8da93dcb0a7f6984f8f. 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/BRWMB2301768.
Revoada dos Bruto (feat. Pedro Sanchez & Thiago) [Estúdio Fazendinha]
Revoada dos Bruto (feat. Pedro Sanchez & Thiago) - Estúdio Fazendinha
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2a5bab403f946be8b683d7fe4134e9b1ce92e1bf80b3e6fd41ac4012c5ddd1. 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/BKFZH2300015.
Mina do Interior - Fazendinha Sessions #3 (Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828dfae11f1218112c6a741defc0d16a0f90a608be1e60b38b86cc9e0de0e4ae. 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/BKFZH2300004.
Do Jeitão Que Ela Faz - Fazendinha Sessions #3 (Remix)
Combo do Perigo - Fazendinha Sessions #3 (Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2c5c63d6c9c34e4fb350042314eabacdccbe9089f7ad61fc8d2bf995fd7659. 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/BKFZH2300002.
Presentinho de Deus - Fazendinha Sessions #3 (Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e705aeabff179862ac692a284cc09629a82e6ea7c8d7eb85c1dbcf768873f67. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKFZH2300003.
Chapéu e Calcinha - Fazendinha Sessions #3 (Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ab5febfc4d3e389ddf9c6003c301e70a1441692f95aaee20530681dbaa309d. 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/BKFZH2300007.
Fazendinha Sessions - Vai Ser Bão Pra Lá EP
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9d8160659c50e52966e39e4c36edcf7b38d8cae0dcd10c9423554aa6cfe2d3. 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/BCAPT2200005.
Atire o Primeiro Chapéu (feat. Dreysson Rodrigues)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b537696fd699887730f19d76ab420f2d0c181504bd235b3e499722788326623. 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/BCAPT2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b537696fd699887730f19d76ab420f2d0c181504bd235b3e499722788326623. 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/BCAPT2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32cc86a8115f1fcf5b48d881073965ce3fbcb1321232380addfccbf622d77177. 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/BRWMB2300752.
Fazendinha Sessions #1: É Disso Que Nóis Gosta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75a573e4cc55dabf0d6db8a08681ab625e90be43d3eb542f953fb563d2845e9. 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/BCAPT2200001.
Fazendinha Sessions #2: Vai Ser Bão Pra lá
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87bd8479d81a94e3142822ec568cbd424c833d14b453bfed7af44421abf4dc46. 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/BCAPT2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee788eb9cc975f2799470cec4b75be10add32a172af78672d39f678048c55973. 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/BKFZH2300033.
Geração Fazendinha: Esquema Na Fazendinha
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc5194861f61027341b4f775d1fb3118bd936eda2a4b00eabe3e5a415ab6452. 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/BRWMB2300146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d45354846ea088de0be5015b60b161bd04dc8923419f2410a37555b0334e72. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-21T16:41:23Z), 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/BRWMB2400321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32cc86a8115f1fcf5b48d881073965ce3fbcb1321232380addfccbf622d77177. 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/BRWMB2300752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e0e48b1d1b623deb563f14e52ba6fec3f6b6ac4d8972e82b0c330f49edb9de. 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/BRWMB2301200.
São João Agro - Piseiro, Forró e Sertanejo
Afrodite (feat. DJ WN, MC PH & Murillo e LT no Beat)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc803fa3a73ec1e165068ef097023f6fb95327847761037b038496c7173b5de. 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/BRWMB2401090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc053d43b9b92b35b75e52792ce36cb98f7aadd9fefcb10651772839c5e1870. 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/BRWMB2401827.