Morro Dois Irmaos

Recording by Chico Buarque.

Recording identifiers

ISRC
BRBMG9500182
CopyrightID (CopyrightChains transaction hash)
0xdecb9530a6466b93a0502a4525e97ebaa606e434b14af9f341d0bb346a1d3c05
Copyright registration time
2026-07-06T04:38:18+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-06T06:56:49Z
Bitcoin block
956889
Canonical record hash
sha256:7db35270ca610dd0b09764d800de92a66556139263f8541718e96e7db10c4a72

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.