Nocturne for Isabella No. 2 in G Minor

Recording by Carlos Marquez.

Recording identifiers

ISRC
GBSMU4901369
CopyrightID (CopyrightChains transaction hash)
0xa465a94e7d72370d337af88fee6a9bf4f37ee55b6da31bd63a8f2f987d8c989e
Copyright registration time
2026-06-20T12:54:25+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:30:09Z
Bitcoin block
956302
Canonical record hash
sha256:0602af326322dd4651c9c8a60b9768d2eacd4161084f43c9744b68f99cba606c

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.