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 0xbcc65ed155631ea3898c4af59fa6ad3f99293e97b70960af46c6c9563ffd0f0b. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d6d1d3e7-1524-4dea-a138-ae6367abdee2.json and https://artists.proofprofile.net/proofs/artist/d6d1d3e7-1524-4dea-a138-ae6367abdee2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Eu Sem Você / Fogo de Amor / Fim de Semana (Acústico)
Eu Sem Você / Fogo de Amor / Fim de Semana - Acústico
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 0xa98301dee7c2fd2ac494531097b45c60a80600a2b4c2987061a15a4ab0dd7deb. 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/BRTW82300078.
Tem Que Ser Você / Fada / Borboletas (Acústico)
Tem Que Ser Você / Fada / Borboletas - Acústico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67efb7719c539375f1e3de2721bd9c91368145d379846061266fb266af435e69. 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/BRTW82300079.
Minha Estrela Perdida / Coração Está em Pedaços / Dou a Vida por um Beijo (Acústico)
Minha Estrela Perdida / Coração Está em Pedaços / Dou a Vida por um Beijo - Acústico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0bd71642cb4bd6f2df04a297081dca0b7729ac1e0d4687ac91b092823d3722. 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/BRTW82300077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bfd72ccb7041c13ba3316d2a76d6772275c9ecf7a2eb49791e1da20290a46ee. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/BRTW82200047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb1eb2dd96fd2ec6ccb8407ba7211ea21c956da40b87daab458d18946c71179. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/BRTW82200050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x231d50f11a655460ce0c6cc10c0508bba3137616ee3bcff531a560ca7c52f7fe. 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/BRTW82100285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e1649e1f0891f5da1e4f5fbe46de9780ef625e4c79766359f217711c0ea4ca. 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/BRTW82100286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x696c6a4e7f61f6824305f86a57b3d5aa01ebdfb74aa50cc2750242e794b2e039. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/BRTW82100287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ee87704a567be3d9c8ca6a6b1d77f24cadf3b4474fc6d8227ebb1ef7b3a135. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/BRTW82100288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99250ffd06cb57a8542b59e5cbb0875a16ea37ed93b4ef91d3d21d81961d2ced. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/BRTW82100289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b78b9ab9db1d983d50b4b3a0d4eb36267985368a2b3903d6c9af903891a6425. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/BRTW82100290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f79e00f9ec5e0575873637a851079aacdf583e9b7a0dedfe13ac84d80592042. 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/BRTW82100293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1333a773a1d3dccf67d0e1ae3dac74e2cf8f022030dd8ce7031f7f6e874ccd5e. 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/BRTW82100294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aafe6c20795bef3816ab45e4037928384ff108d8c985b80aaa6e8af76ffa1f7. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/BRTW82100296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b979fb14a643bf399cf53cb09ee42b4ae07925445bd2a4062593e057501412. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/BRTW82000028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6b53ff9062dbde971e3ef6f0aa381ea2821bf664472949a62c6a09bbee9e3c. 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/BRTW82000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa641c4e3187938ffb937f78d1af26e4eb0c80b5869974b0f4020584e07a9eddc. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/BRTW82000029.