Valsinha

Recording by Chico Buarque.

Recording identifiers

ISRC
BRPGD7100040
CopyrightID (CopyrightChains transaction hash)
0x84cfda24ea5f44de4406355151922d6d98d2a80226a70b40e87af1c6d01ed1ce
Copyright registration time
2026-06-11T11:35:48+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:55:08Z
Bitcoin block
956304
Canonical record hash
sha256:06f5459e9d3287f6abeb1d88fb84de515ad26feed56da0da9911869badd6a98a

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.