Valsa-choro

Recording by Heitor Villa-Lobos.

Recording identifiers

ISRC
CNUM71600012
CopyrightID (CopyrightChains transaction hash)
0xe00a07eead9fc28ebba9d0850b6f20bfbbb2f5cf909dbfa447fb9ed4c575a5d8
Copyright registration time
2026-07-31T07:50:44+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-31T08:26:41Z
Bitcoin block
960368
Canonical record hash
sha256:93ba306077c05efa62b5e06d4090c6fe63e60f487afbcefc577589afae343465

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.