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 0x999f94bb0c16f475fd3546c5fc4fa8c7a667b65c24a85d0f824fe4525c784eff. 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/56500d7b-7340-4530-9ec1-b85b2e636cd3.json and https://artists.proofprofile.net/proofs/artist/56500d7b-7340-4530-9ec1-b85b2e636cd3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Samba-Enredo da Gaviões da Ferrô 2025 (Playback)
Samba-Enredo da Gaviões da Ferrô 2025 - Playback
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 0xa0df5e6c9d62ea100aa4b18528b3253ad7125ae3905ced6378579b83ea72cf57. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/US7VG2583556.
Sambas de Enredo: Carnaval SP 2022, Especial, Acesso e Acesso II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2b9a8a36561c0a97acb0f86f7945b957787d9f5e79ded1328cb4a908502b74. 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/BRLIE2100003.
Sambas De Enredo Das Escolas De Samba - 2013
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a8ab18c0c7c8f40d397665f9aab4aea3d308e959d023888ae2e46aff16cf8c. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/BRGES1200011.
Memórias Do "Pai Arraia" - Um Sonho Pernambucano, Um Legado Brasileiro
Sambas De Enredo Das Escolas De Samba - 2016
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff322005f864bca0af35cdaadd1c462ba2ad72d5c727f8d8f7a708f0be5e8e11. 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/BRGES1500011.
Sambas De Enredo Das Escolas De Samba 2017
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1fbf3f368634e3d31114e6a793c3a890ac642a6c91d1cf8d314c6166176149. 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/BRGES1600008.
Sambas De Enredo Das Escolas De Samba 2018
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3718128c597a327ea480583933ec12dca673ec2bd1b1812e3546f175f25876. 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/BRGES1700010.
A Incrível História Do Homem Que Só Tinha Medo Da Matinta Perera, Da Tocandira E Da Onça Pé De Boi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0a9b7191d22b8a4477579b4c819ad23978dcfaf91baaa2c24f804ada8df96f. 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/BRGES1400011.
O Seu, O Meu, O Nosso Rio, Abençoado Por deus E Bonito Por Natureza
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32280951ff7c17e8ad66555c3ae4ea5fd53e3fdf235b8f5eed1002c079860f06. 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/BRGES1000012.
Uma Aventura Musical Na Sapucaí - GRES São Clemente
Sambas De Enredo Das Escolas de Samba - Carnaval 2012
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c0a7f182ef795200b74897456dfb07e4d45c6268a06dc3c3fc255f600603b9. 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/BRGES1100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a144f2b8ccc8df371bef2d8f7c3ecb11ac98ce3bf53f8bfe495b4ca6e6d8738. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/BRGES1300010.
Ayakamaé – As águas sagradas do sol e da lua
Sambas de Enredo Carnaval de São Paulo 2019
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419f9659a9896bbadd98d0d8eb456232a9e47143ffbf443f18b870d74ee31122. 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/BRLIE1800002.
Do canto das Yabás, renasce uma nova morada
Sambas de Enredo Carnaval São Paulo 2020
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957e89ab74fab4a29162634de69162b5062472f9a6ebbaf75d2710bfdaea4e71. 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/BRLIE1900008.
G.R.C.E.S. Mocidade Alegre - Ayakamaé - as Águas Sagradas do Sol e da Lua - Ao vivo
Carnaval SP 2019 - Sambas de Enredo das Escolas de Samba de São Paulo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419f9659a9896bbadd98d0d8eb456232a9e47143ffbf443f18b870d74ee31122. 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/BRLIE1800002.
Do Canto das Yabás, Renasce uma Nova Morada
Sambas de Enredo: Carnaval SP 2020, Especial e Acesso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957e89ab74fab4a29162634de69162b5062472f9a6ebbaf75d2710bfdaea4e71. 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/BRLIE1900008.