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 0x6d10695aa106688f1480f69786db4ddd999358dbf614ee9389c909b08e43db85. 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/68a265df-9098-4d9e-8216-d05889b7945f.json and https://artists.proofprofile.net/proofs/artist/68a265df-9098-4d9e-8216-d05889b7945f.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 0x13896ff113a8deb734b308e3c1c7463899f8c5ecb825b88e05acfa76707e3f8b. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/BKJ7K2300017.
Medley Proibidão pra Paredão (feat. Mc Gw)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1dcca883eae599d4316e770f6537adc69bdb4cc341f7debc94ca21a51ef990. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BKJ7K2300026.
Para de Mentir Olhando na Minha Cara (Batidão)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d2fb61ecc386d6ada8c50bdc78599ff531fc11a510dd5e10742a873b7754cf. 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/BKJ7K2300288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0627e91e00c93d5bac15af4f0820e00f7a1b285475fe0c2ae084ee3d193c934. 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/BKJ7K2400366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d967b3fbe4a980c445225acf224f2c20ab931092fe0ca5eaea399d404b0e95. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/BKJ7K2400417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc96933e5a7e043b8308942ced7477517c0b0b9ba2ed1b90bcd82f1a3b0932e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/BCBCD2400258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73237ab6472941af5f8e73bc971167ad222779f4f681fbe05881d128264b07b. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/BKJ7K2400545.
Lembranças Que Não Saem da Minha Memória
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081d0d0ac62987b4f5a460d0dc7f00b658fa366672958e5f36534e48c5aa6bce. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/BC0902400020.
Arrochadeira Ele Me Inveja - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342380a5efe94e4b047ad6a6487c7e866d6c4e5f230e30e7e6a86c74c808d371. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/BC0902400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cbd75d10ecb2e93e724655674d4cab92020b100c9fcd857ad41a2fe2ec6c2f1. 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/ESA112450640.
Brega Funk Escutando o Barulhinho (Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a956a3dbe47a0d821b7c3092b5998c06dc42db77728ec2144420f57e6f86e3a. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/ESA112450638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6bbd382bc093bff7ad693299d88096015842a96da9ea476fa11f8bb4f507766. 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/ESA112450645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0133fca82988c9d09af7f8ca666b1f1c1cbba2cff8b94b74ced3da44254b7311. 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/ESA112450615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7edcc4975350a34e94ea50d304633a0c468d503518f2fc8b7636b38ee39c2a6e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/ESA112450647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e98adac16c8755301ddb68ab286ae7a21657cb6a69c954b716329c299f233f0. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ESA112450629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5932f0b59b5fcb241d1f300a4e9f41ed7c43acd3e5c55e86163a83b8a9721671. 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/ESA112450639.
Lembra Aquele Cara Que Te Deu Tapa na Cara
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd3ea22e29fc897e42417b66acd33b02a408b798b7386b610ed5d165f8df811. 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/BKJ7K2400672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d30fc5a51f04081afd59d791cf7dcbb9c6b965e5a5ea15f648fd4b80fec67da. 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/BKJ7K2500113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf89337e53a0369732c1fd3b73f39b76b18b61036b4170cb00d7701fabb86da1. 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/ESA112568568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637c18c4ab8ecba3c3b6dbed67c52e5b4b3af80c33e53b89ca9d8540130f5cf0. 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/QZYFZ2511969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac83cc9cc55fc16d3899d7f392980b822ead6fad6eef43fb05e745b100a6d22. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZYFZ2511979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b68df85daa150711a6e4d86e93af8e09f983b2988f7cea0db49cf2f74a67a2. 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/BKJ7K2500212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03319274a95d223a190fe67b5022449b6438210df8585ebd12c23677226b80cc. 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/QZYFZ2512295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ae6454292f04b39dfccdcd87fe49f389cf01917a46adb65fbaba32f5c27e9f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BKJ7K2500228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c112ba5da6f9ba496c2a04807900722faab4da2a06d86c688900ea33333cd2. 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/BKFWD2500001.