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 0x16d6ae0d95c910af4b50adb794299a24c03e8b245079b8e4e9a922c6307cea28. Chain 2 (Bitcoin): anchored in block 953684 (2026-06-14T19:51:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/659c07f4-6d09-4fe3-820a-41d3646fa4e3.json and https://artists.proofprofile.net/proofs/artist/659c07f4-6d09-4fe3-820a-41d3646fa4e3.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 0x9888471da158f3fe0b3b3b0519d72410b7d4530b975eb3b5e1b4b47a6e9fc50a. 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/BXTP52300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2c0b38d8762ac51da58979032cb29c111ff6a853e3dd860c44f7e0a3ec9a33. 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/BXTP52300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d14184d4670b1e34523de3a44737034e3b8b525b5053c2509a14f6ce4b81f96. 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/BXTP52300011.
VOLTE AMOR/ ONDE ANDA MEU AMOR - BROQUINHA O SERESTEIRO
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32e89a316580c8740a9de2be151a07fd4f5c4931e3ab94958378bed9db8a841. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/BCQG42500002.
Ela Tem o Dom de Me Fazer Chorar / Cuida de Mim / Um Século Sem Ti
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e26086d6c68277e13230248d5843addaed782c268e66b873f74edc7bec6d97d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BCQG42400009.
Vem Cuidar de Mim / Diz pro Meu Olhar / Saudade Bandida
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e6008029a2072ee6fb1ddf1a9d1092f4988bfc529dc01aeb3cf1bfbfe90c99. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/BCQG42400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c2d6109d28f7dd98cb434834177fdd4c873c005401237672ef9c34686b3a3b. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/BCQG42400007.
Baladeira/ Esse É Meu Forró/Capricha Gaitero
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef299e91c8d199cfd23b724524de6b79ce880c3b1fe92a5030733fa2cf93e3ff. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BCQG42400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba20183e44cb922344942e3a56d007840ba7d01edede08aa9390be6e38664ecd. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/BCQG42400004.
Revelação/Cabelo Cor de Ouro/Inventor dos Amores
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e62a0c32f1d63e60105246af949f3f076c413c1b3d7a0a12005af26ea7a631. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/BCQG42400003.
Eu Meu Cavalo e Ela / Ta Rocheda / Vem Me Amar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b7f7991bb0fc1cf2d05e965f2f2e84cfa7bba9ed2009103c797081a12c8ce7c. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BCQG42400002.
Inevitável / Agarrada em Mim / Ligação Urbana
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629ed522f67907c1c0d919293cb76ed5166a491de18c00c158ada68219700fb6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BCQG42400010.
Acorrentado em Você / Se Tiver Coragem Joga Fora / Favo de Mel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5ecf9427529f8fe22dfd77dda52df043e2ccfc570565e9c869fc62f2f18e79. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZGLM2440229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a24c6d52803691419c2795497fabc48f8035aea110ca3dc8f43a5a2197204c4. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/BRKZU2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf4337855e4c704a7db28b72cbc89a898f779ff1165eae9fb31fc0bf9a40a9a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BRKZU2300001.
É Disso Que o Velho Gosta (Churrasco Bom Chimarrão) - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b403d0584ba15f9a3407b2d8e507282303dcbf3d4c824742c520fb9fa60f203. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/QZGLS2324343.
Antes de Voltar pra Casa / Me Esqueça - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d85a168df05c0edfa79cfe94902b1e3544503dd2822f6b2628897ee1d2e63a. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/QZGLS2324344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f9aa16fa2eb540e83cd85e02346271f07d1d088446b2b9210fb209f600625a. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/QZGLS2324342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf4337855e4c704a7db28b72cbc89a898f779ff1165eae9fb31fc0bf9a40a9a. 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/BRKZU2300001.