Duô

Recording by Chico Oliveira.

Recording identifiers

ISRC
BRTRB1871512
CopyrightID (CopyrightChains transaction hash)
0xe7a454f80060d3504caf1567b5c9d2f32dc462b79a432c0924c7bb8d5de10671
Copyright registration time
2026-07-07T19:17:30+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:22:41Z
Bitcoin block
957120
Canonical record hash
sha256:e5e7cca7b8e8710ae3b887daa59e7c27d5bc0ee2a1a0d0c1985c56bb7696ac65

What this proof establishes

This recording belongs to ProofProfile's historical evidence base derived from the pre-2022 AcousticBrainz and MusicBrainz corpus. ISRC is the stable recording-level bridge from that source corpus to the authoritative cc-db-prod track record.

CopyrightChains and Bitcoin OpenTimestamps make the exact committed record independently verifiable today. The cryptographic proof does not by itself establish authorship or ownership of the underlying recording.

Read the complete pre-generative-AI provenance and verification method.