Vals No. 3

Recording by Agustín Barrios Mangoré.

Recording identifiers

ISRC
USSM19401996
CopyrightID (CopyrightChains transaction hash)
0x07893303226be07708c879b2cf324e095c36e475783ac61e6e6ef93eeab63dcd
Copyright registration time
2026-06-22T04:46:12+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:55:08Z
Bitcoin block
956304
Canonical record hash
sha256:c2cb65e1b7384daeeaafda7805162b57ddbe148bd4d545a8a79fd1efb9fa98ff

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.