Antônio Cardoso is a municipality in the state of Bahia in the Northeast region of Brazil. Its name is a tribute to Colonel Antônio Cardoso de Sousa (1848–1932), the former owner of extensive properti
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 0x52318492d4b2bd8bb502ca92b77af3f8fb656a4308cff4a81b59ea62a910beba. 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/7edb3916-5c53-4c57-a884-432f070f0d7a.json and https://artists.proofprofile.net/proofs/artist/7edb3916-5c53-4c57-a884-432f070f0d7a.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb446d5deba9c2e4e6cc6410f23e80f0c6a12b0dc0b766f8cd926e761ce5152. 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/BRCMP0100002.
Quando Se Vive um Grande Amor (Playback)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4bb7a0c83e89de727ed110af2e83a49a24ef2f180efe3b71d5a16501d019a47. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:48:03Z), 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/BRCMP0400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3892df731282758d31698dffe60a5441cfbdc87eb1f9a9616e857ec49815ce65. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/BRCMP1100047.
Pan-Amazônia Ancestral (Sínodo para Amazônia)
Dom da Paz - Em memória a Dom Hélder Câmara
Pan - Amazónico Ancestral (Sínodo para a Amazônia)
Sob a Luz dos Mártires da Fé (Um Pacto pela Amazônia)
Corações Ardentes (Hino do 5º Congresso Missionário Nacional)