Valsa

Recording by Katia Guerreiro.

Recording identifiers

ISRC
PTKG11100065
CopyrightID (CopyrightChains transaction hash)
0x617b86d55cfe3596b0948f99498dadc489d39ade249c7cd00765e196991b997a
Copyright registration time
2026-07-22T17:47:59+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-22T18:47:29Z
Bitcoin block
959163
Canonical record hash
sha256:7a6c6d82b184bf6adef0f649082f7af682657d5933ec9acd06ed0e7143ce33a3

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.