Valse Melancolique No. 12 in B Minor

Recording by Carlos Marquez.

Recording identifiers

ISRC
GBSMU2852779
CopyrightID (CopyrightChains transaction hash)
0x6048bc99ee35cca0e17748da1cf46f65deaf430a83a0b3fa92ddf01d0bd4cb1f
Copyright registration time
2026-06-08T23:27:32+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T13:32:09Z
Bitcoin block
953520
Canonical record hash
sha256:9aaa389a6ffbbea10cdf1a30b62ba7325e1af1d53c7d3ba2742a93e7027920c5

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.