Acácio is both a masculine Portuguese given name and a surname. Notable people with the name include: People with the given name Acácio Barreiros (1943–2004), Portuguese politician Acácio Casimiro (b
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 0x2713cfd43000adad2f6af2abe8a178fa424306eee80ed72fd6ba0191b444fa19. 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/7299dc3e-e093-4f5d-a625-9b96821e65b2.json and https://artists.proofprofile.net/proofs/artist/7299dc3e-e093-4f5d-a625-9b96821e65b2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
O Ferinha da Bahia (Ao Vivo no Embu, SP)
O Ferinha da Bahia Vol 4 Ao Vivo em São Paulo
O Ferinha da Bahia, Vol. 4 (Ao Vivo em São Paulo)
Receba: Os Grandes Sucessos ao Vivo em Sampa (Ao Vivo)
Receba: Os Grandes Sucessos ao Vivo em Sampa
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 0x9ec267cdeeb81adb42c0ad98a266bfa4cec57e14b168fdeef7208bdf712d5264. 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/QZEQU2133703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2fd6346efee77ef9a8fffb932bc319250af922531ca8751d3d2b408a8180c64. 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/QZEQU2143265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56bf963e03c35faacef99822e6ac2cfaed4303945c83e374d2b5c0697c27aaff. 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/QZEQU2143267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0365a235b4dac46b9b95d7a8ae76450b3805a2cde929d92f79a628d4f5825ffa. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZEQU2143269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80663b8d6db31f9b9ef5b206ef9afb3891edb3bbe437c7db55b3fe3bf770ec7. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/QZEQU2143271.