Nocturne Romantique No. 7 in B Minor

Recording by Carlos Marquez.

Recording identifiers

ISRC
GBSMU3698231
CopyrightID (CopyrightChains transaction hash)
0x0559335c4163427090a75ee0ec349f98eb3d2dd55e6ce2c1c4ccde601f691001
Copyright registration time
2026-07-07T02:04:48+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:fb86ccaf4eb2c59bfc3f3361f334fce9fd7d356919054dd56e7ef370c9b90bf7

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.