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 0x4fd8465f1c517c82596ccb2b91c636522ceb99f9746358dce0a3efc51c276e89. 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/50b4a540-4feb-449d-a966-4c4002b8fac2.json and https://artists.proofprofile.net/proofs/artist/50b4a540-4feb-449d-a966-4c4002b8fac2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Apocalipse 16 - Árvore De Bons Frutos (Ao Vivo)
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 0x603b1388e183d8aed46d168b2742d0b41403724b5d9ec6ec41e14e60fee8e9dc. 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/BRAP60900048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d1d6cc676653be64b9ca80be51ba32ebd6c451619c0d6afe6c7266052d6231. 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/BRAP60900049.
A Caixa D'àgua (feat. Rogério Sarralheiro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba12763a8a359d05cbc0f0f179573226b90e6cc368b0429c4e782a9fe8d88b4. 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/BRYY81200159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf80bf4fd39e95c0a775e6137f995068307c680d30c5ec1dcae657511626c949. 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/QZ5AB2039546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26422fb99fdd9c2728892705857e5e136d11d453a41e103641a1585738fcc99. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/BRXGX1300012.
Apocalipse 16 - Antigas Ideias Novos Adeptos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fff126b3ea333d319e72def8c42e0277ffb2e37f985c0bf05921cdf8ffa4ff1. 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/BRAP60100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x949fb8db0eff7ca18d48e3a0d3ee49316fb129a37b356560d5909034674fe918. 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/BRA6A1200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf981d3442f0ca8a30ea6b73fd2a1ebd4ca38b766d8de00b2c2bb6d47f7d6801f. 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/BRA6A1200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db05964ce2b30030e90a522b92d2b42048872e1cf43b598c36547a1191877d8. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BROCG0900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0faec6e35aa8c88efdc0ec11831fd2870982fdad3c6f3100515f9a2c7a48e5. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BRVJ90800013.