Valse Melancolique No. 7 in F Sharp Minor

Recording by Carlos Marquez.

Recording identifiers

ISRC
GBSMU2852774
CopyrightID (CopyrightChains transaction hash)
0x9aff9b09969ae719970e34dfbfdb3868085a82dcc36ed70c2188957238e90f29
Copyright registration time
2026-06-09T05:32:04+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T15:41:10Z
Bitcoin block
953528
Canonical record hash
sha256:695cdd17c007fe8ad30cb5ba75cd0d83da1b981ff46d310af1f6e421cf687970

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.