Nocturne for Isabella No. 1 in D Minor

Recording by Carlos Marquez.

Recording identifiers

ISRC
GBSMU4901368
CopyrightID (CopyrightChains transaction hash)
0xc9b5f20f3969bd4658a4fb23a04983fe27cdc47e52dd370b68ac09a610342de4
Copyright registration time
2026-06-06T06:32:50+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T12:47:07Z
Bitcoin block
953513
Canonical record hash
sha256:4856f2b904b7ae25f758e03baec7a9664ce450fd340641dee4221799b2a36461

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.