Valse Melancolique No. 10 in A Minor

Recording by Carlos Marquez.

Recording identifiers

ISRC
GBSMU2852777
CopyrightID (CopyrightChains transaction hash)
0x465bb3c27d053ef89041b7ebb28f0a26631e8b4c6b9071027605e2ec7f17c38e
Copyright registration time
2026-06-08T14:57:02+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T13:32:09Z
Bitcoin block
953520
Canonical record hash
sha256:34bbea6de8ab90955aed8265b90bd07a57de0ad469fcf50730a4083a439f4e58

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.