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 0x90a5bfcc6b10ebd4c55b898ca5c6c82a6fd3d7007384d07b62b78b08b9b3942e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f04ec9f4-3488-4085-9419-6f9c44901b32.json and https://artists.proofprofile.net/proofs/artist/f04ec9f4-3488-4085-9419-6f9c44901b32.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 0x080a4c327a468fe78a8c70189b478569d12a83cf90e519d5c2fea36136f419ea. 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/BRSME8900050.
Escolas De Samba - Enredos - Beija Flor De Nilópolis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd013f7cda82061fd6b38aea121f7f798da84c1503bfce4a504b12272a8a3da5. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/BRSME9300136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8de89c7af4ea576b1164d5eef29a87017ba5b2f08bdef3e10a3dae08a23a46. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:07:18Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRSME9300137.
A Grande Constelação das Estrelas Negras
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d4e621e10133fc5c7f805f3f35c3c6974c3993d60945ed1d3f76412968fa07. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/BRSME9300138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef68d9f1e0d531b985f5fec0152948b43ff401f60f857e677dbd9201712a0251. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:18:10Z), 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/BRSME9300141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x056aae3949f04df508f3fffb1837202b7a9e89d2af4d6f91c685bf6588e218b9. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BRSME9300142.
Ratos e Urubus... Larguem Minha Fantasia (feat. Gilson Bacana)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc378b311446415c1fdd701ea408b92579fc98eb8fbb9b5816460a6c73b0e3f3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BRSME9300143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2f0ecdb5a9cf151d8f40b9aee9c9fad2c77581b4167eb4894484517745762d. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRSME9300145.
Neguinho Da Beija-Flor, Da Vila E Da Viola
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931c0fd6e92054768f59ad79b736591addaecc9d9bfbc9ecd51ecde1aa7c4de2. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/BRSME9700736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc35325f2f21a53c211098bf0f497bdddb6ba79be921f407ea88738fd827975. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/BRESM0000496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1de76ed93e72c856f03f008b9c679e25b6dcf9f036e442d920cfcd78d88104e. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/BRESM0000480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e895c598d1864b11d38c4c605a5838b7044799d31b4479855eeaf057dd12cb8. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/BRESM0000488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e96e153570692c0472f2582c37f4423c84ad9bb9d6524387def49c37229dc8. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/BRESM0000489.
Pot-Pourri: Problema social / Menino de pé no chão - Ao vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2531c5850e7df0a10ffb0d905c527a42a002d2df5edca20d80a7b67c58f1af71. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/BRESM0000486.
Pot-Pourri: Malandro também chora / Malandro chorão - Ao vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4a9937fc5da77399199a9890bb60ed08d0497449a1ea8a5cefc0b43f672e06. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:47:51Z), 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/BRESM0000494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b482783f0a8205e7403c3534859b0d7fda42bd09d3468fdedb86046b0efbb0. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/BRESM0100318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd022487624a34e8e1cc82ae5ea985dd359ae8d03173ea0bd59191ad5a0d2084a. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/BR5S71800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4bbeef9310889f029de4963e950a42e2a5686cae51917985bfc0f84763a3be. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/BR5S71800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa758b25cfd8a5488093209e8da1df529d71a54308d553d437c8b39d9b72f1507. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHZ51922504.
Cinco Bailes da História do Rio: Império Serrano 1965
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c29ebe2425dbfefacce4ccb62c9bf653336ce06f1394f7e7800c571339cb6ad. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/BRI9C2000010.
Aquarela Brasileira: Império Serrano 1964
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0d0a3064ed356fb3339bf46eef252f1113fcda4a1b8d0277c246f22ca73100. 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/BRI9C2000012.
Coletânea Sambas de Enredo Memoráveis: Anos 60
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51da7890af926fc640d23a4f1afaf86f81fc7bfadb95a3e81d0a93641338030b. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/BX08N2300320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacef1e1e796218250e7839023abf52a3b6af171708cf1da0e0adfbff54bc711b. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/BX08N2300310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca990b2efd8ed48e6580f8919a5bf8ba227b3ac13c9a579211d45bf773c982f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BX08N2300314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0cbf676cd2cf5ed9e37c2e3ef89a728493d06ec3793c347706283e80883025. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BRLAF2500001.
Amigo Fiel, Do Cavalo Do Amanhecer Ao Mangalarga Marchador
Sambas De Enredo Das Escolas De Samba - 2013
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9479901e5ca35eff0e4b1fe1568997877d7e0e33c3f257d416f5c861adfc8b45. 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/BRGES1200004.
O Sol da Meia-Noite, Uma Viagem ao País das Maravilhas
Sambas de Enredo Das Escolas De Samba Do Grupo 1 - Carnaval 80
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c2929ca620c782c44abc0191de0f1409d5dade640980c246e6555ac95c2ae7. 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/BRTTP0700023.
O Neguinho E A Senhorita / O Campeão (Meu Time) - Ao Vivo
Zeca Apresenta: O Quintal Do Zeca Pagodinho (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ac4b1dbf6bbe5cad65f924af9ce0e6d329dc23578b5de8dc933bfb54697fc6. 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/BRUM71601398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc648f29f3d6d1de6e1aeb5685b295284bd80712109756f24f13c910c7a15505. 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/FRW901400869.
Sonhar Com o Rei Dá Leão / A Grande Constelação das Estrelas Negras - Ao Vivo
Os Mais Lindos Sambas Enredo de Todos os Tempos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d7c009a2876f64af0103bc36a028f79021f7266ab3fbce8f954552e0005ca3. 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/BR03D1300841.
Sambas de Enredo Das Escolas De Samba Do Grupo 1A - Carnaval 84
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43bd855e6b527163cab91d511bb0941dc4975879de2037eecd451c839174687c. 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/BRTTP2100639.
Sambas de Enredo Das Escolas De Samba Do Grupo 1A - Carnaval 82
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29102292d917fde05526b747ff6f0c1e7dda45b45ff486ca0cf0e937cd1aef2c. 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/BRTTP2100621.
Carnaval do Brasil - A Oitava das Sete Maravilhas do Mundo
Sambas de Enredo das Escolas de Samba do Grupo 1A, Carnaval 81
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e87eee6f4d25762aa2f878861eff193d3c2c255bd3e7b1f09cd908ec025b43f. 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/BRTTP2100610.
Sambas de Enredo Das Escolas De Samba Do Grupo 1 - Carnaval 79
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e26f0fdaff464fb1b68eb03900c4bc38a70665ea60252448ff0939c8c9c3e8. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BRTTP2100583.
Sambas de Enredo das Escolas de Samba do Grupo 1, Carnaval 1976
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d7718cd10f69310fffca75c8667c54899bc172ea84661212a100acf82d5fc3. 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/BRTTP2100555.
Mineirinho Genial! Nova Lima - Cidade Natal. Marquês De Sapucaí - O Poeta Imortal!
Sambas De Enredo Das Escolas De Samba - 2016
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b12b8f4acfe42c83d1acea5d409acccd738ed1be041b66df1270ca492e9f8ac. 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/BRGES1500001.
Sambas De Enredo Das Escolas De Samba 2017
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d6e40a73e52e9134f4d339273c4afd7553117ffca49ea15957b95240fd2596. 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/BRGES1600005.
Monstro É Aquele Que Não Sabe Amar. Os Filhos Abandonados Da Pátria Que Os Pariu
Sambas De Enredo Das Escolas De Samba 2018
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d91a876c248d597bec14ba648f4c787b59689c144d1095717e9e3ff0c75468a. 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/BRGES1700006.