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 0x2318e6b8e6a7cd1f82f8a8b502d5c2f0f2968e253add5413de6dd53f6f56fc77. 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/9ced2c92-8beb-49a7-9d1b-0fcfbbd4a663.json and https://artists.proofprofile.net/proofs/artist/9ced2c92-8beb-49a7-9d1b-0fcfbbd4a663.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 0x1453727a4bd269bc468a5a6d6d406f43dcb90006a44dae626bf6127841167899. 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/BKLZP2200001.
Vai e Chora / Eu Nunca Amei Assim (Ao Vivo)
Vai e Chora / Eu Nunca Amei Assim - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c43b13a81b7776883d569dcd758eaa745176b2f4424a34d5a6c90da20bfb00. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/QZW9M2298582.
Sinto Sua Falta / Até Que Durou / Meu Querubim (Ao Vivo)
Sinto Sua Falta / Até Que Durou / Meu Querubim - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc041a00665575ed3bf98873919e3872679eefde8c7d542e36fc11b3b285d84a1. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZW9N2255088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21199f6ddc779fdcb0f29283b6de6cd159d0e0f7f01a4fd1d004c707cc1836ed. 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/US7VG2310599.
Nada Vai Separar / Fato Consumado / Tô Te Filmando (Ao Vivo)
Nada Vai Separar / Fato Consumado / Tô Te Filmando - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239d2dd2d5156c71241446414d5fda4207e79aaa3da3e024d565da67435afb17. 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/US7VG2354846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed71ab2ea7cab246ed855202e5dedba0315465dda36a2b1872692f68f279081. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/US7VG2399373.
Proteção de Tela / Se Não Valorizar (Ao Vivo)
Toda na Medida / Bipolar / Dividido (Ao Vivo)
Toda na Medida / Bipolar / Dividido - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa870cb099c1f8d72f60ca23944d8ba0046042b1bc013487052f92d3537e5b07. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZ5AB2344735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9484e0d2ede8e303fbe22d7b197c8194aebfb4ccb78459ae2abc44092ddc03e. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/BKLZP2300001.
Como Nunca Amei Ninguém / 40 Graus de Amor - Inspirações
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb844916504f0c980e0a99f32b4dc5c8d66ff9256ff72c4d81b94d969a4d9013. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZZ662428987.
Sentimento Nu / Quando o Sol Nascer - Inspirações
Meu Coração tem Medo / Engano - Inspirações
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f4b15b34a8102b5c217346903ba128867d13ad46e297327f7ece422f2196ebf. 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/QZZ662428989.
Farol das Estrelas / Não Foi a Toa - Inspirações
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71833bb91068ae469dd5992ffb04b72bcb46aa60fbfdb211142e2c4d93096367. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QZZ662428990.
Péssimo Negócio / Refém / Trovão (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ff29e810d2257edb7b2e2a7dfa2a57515ddb0034e6325f6e487921f8071ca4. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZWDW2453307.
Cidade Inteira / Cê Que Sabe / A Lua Me Traiu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67aefac757c32a61ba637958c8c1e8fff3f9ceb6b5db5ffb32f58e2102611f4e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZN882420565.
Alô / Olha o Que o Amor Me Faz / A Lenda (Ao Vivo)
Tá Vendo Aquela Lua / Buquê de Flores / Abandonado - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908bd5ecfb56d7a43322fad0972b26802db95daf4efcbc4fa91f153d047a534e. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZYFZ2509504.
Me Apaixonei pela Pessoa Errada / Faz Assim / Disfarça / Até o Sol Quis Ver/A Carta / Fora da Lei / Clichê / Cigano / Mel na Minha Boca / Quando é Amor - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9067b831b196ef08253bd39892c5fdbcbe20e28a2ee026216bba85b02a8d38b4. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T05:07:11Z), 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/QZYFZ2509506.
Tuntuntun / Tudo Bem / Joga Pelada / Vai que Cola / Uber - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081f4a21d8f6206bf672cc176882f59f28d995a6be2ce428ac4c425c2f1573b7. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZYFZ2509507.
Boa Noite / Não Tem Perdão / Loucura do Seu Coração - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ff611a5c6dba4565b524868de0a15ea4634e736ee9d2b3fc924e1eaa1e639c. 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/QZYFZ2509508.
Que Situação / Coração Radiante / Ela Mexe Comigo / Deixa Acontecer / Deixa em Off - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f414f66403209401239e3fa5ddf5cc9282234251a7dbce5ac4fc256727515f. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/QZYFZ2509509.
Perfeição / Pega Pega / Águas Passadas / Me bloqueia / Disk Me / Sinal - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eadb9f04007ee01dfcc7e6fd14c6602737c6673ce379fa272a4a9b48b43b0fb. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/QZYFZ2509510.