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 0xaf8437bc46e0bb5631b11d3f21826e216c959798baa542affe15306aae6d67fe. 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/cd37fae1-152b-4b38-ac32-1eb117f1831b.json and https://artists.proofprofile.net/proofs/artist/cd37fae1-152b-4b38-ac32-1eb117f1831b.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 0xb178e1d55ab3bc3231f282d193ae12b893f93051092d10273d55e92e41f8d5a4. 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/BXWFA2000103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e63603f0410cdfd704f9330a491f45847fa2a31aa622ec7d7ca7400d0ccad78. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/BXWFA2000099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc0752e80131a6b4368506a14a95df6bab30a2ed93118eb83b24b3e0bf4e86b. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/BXWFA2000098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320c4c2fcfcbbc42657db90d9dd1da26155ff0d8a27cca49cd7642ead1dac5c2. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/BX70Y2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb355559212852401e5b1cc6ac47baeb67c6eeb0c0859183f5f8fd4ba0e6c8be3. 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/BX70Y2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eae11599d56f2cb9f77703d92dab2fc6c0d593d95190a462d1f0697a62e27cb. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/BX70Y2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e388243566c6190bbd48995bc76e356172accc3e57f954fa97ae5a1945ac2f. 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/BXWFA2300006.
Bem Vinda / Eu, Você E Mais Ninguém (Ao Vivo)
A Cara Do Problema (Ao Vivo Em São Paulo / 2024)
A Cara Do Problema - Ao Vivo Em São Paulo / 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3241e43f87222de9322a923346078dd4f62a64f04e351eb14f99daf617a28fc. 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/BRUV72401154.
Nossos Momentos (feat. Bruno Diegues, Dom M & Joey Mattos)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1dfc15f0de6fafe5755860254ac1aefbf5f3aa5c7277d220eb8c4baf68a9f5a. 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/BX70Y2000010.
Fissuras de um Casal / Não Precisa Mudar / Patricinha do Olho Azul
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d692456471b8ef34948b6ecbafecbbf2653637c3474880339a21c4d0e13b7c. 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/BXSWA2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11370ef70e0480f62c297d905995138cdffb8271940bc273b747e9b4adc02500. 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/BKP142500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11370ef70e0480f62c297d905995138cdffb8271940bc273b747e9b4adc02500. 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/BKP142500001.