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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c747644e6678617a72703362605a498b7d334aaeecdbddd7c609f5458da8897. 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/52102956-ca53-408d-927c-12dc7d8d737e.json and https://artists.proofprofile.net/proofs/artist/52102956-ca53-408d-927c-12dc7d8d737e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ta Carimbado o Nome do Cyclone nas Favelas 6.0
Ta Carimbado o Nome do Cyclone nas Favelas 4.0
Ta Carimbado o Nome do Cyclone nas Favelas 3.0
Ta Carimbado o Nome do Cyclone nas Favelas 2.0
Ta Carimbado o Nome do Cyclone nas Favelas 1.0
MTG - Senta de Noite e Abre a Perna de Dia
Brisa do Ice (feat. MC Biel ZN & Mc Pacote)
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08058898e132a8350433df783cbb46b440b58b7267b70e0af26ccfcab3fddc05. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BCI5M2400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1308596732004cefa48d22c88fd253490d40e7ac5dfe63cad737b6a57a95cf. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BCI5M2400016.
Desafio da Mulherada x Mandei Meu Cavaco Chorar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8d20974631d725489d95219a5def17fc7336d6fba92184165f74c89dbc0189. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BKTTW2300336.