Marchas de Raul Ferrão (Por Um «Cavalinho»)
Noite de Santo António / Fado de Vila Franca / Ele e Ela / Guitarras de Lisboa / Ó Careca
José Calvário, The London Symphony Orchestra - Saudades, Vol. III
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 0x174692a235d047b0fb18170bcbae16580a2431de047fff6c3dfb6c4a16b06d56. 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/PT5DZ2300005.
Beira Mar / Arre Burro / No Dia em Que o Rei Fez Anos / Ó Santo Amaro / Balada do 6º Ano Médico - 1958
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14ed3bb590925060254fca7bc9ec9c6f39c7373d3fcac11e9390a4039476503. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/PT5DZ2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ca50fcde49e0278c6c2f30cc94b29d6f11c89f7b68ec81a57ad9e653505f9e. 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/USSM11801735.