Impromptu No. 3 in G-Flat Major, Op. 90 - Edit

Recording identifiers

ISRC

GBUM72402717

CopyrightID (CopyrightChains transaction hash)

0xaec090cc4d25b231fd4b3765d3d3087f4a9ad9a2ae9c2cf18cda94224ec21f14

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-29T13:21:01Z

Bitcoin block

960111

Canonical record hash

sha256:3c018515b4caebe5f071db3af48266007ac64f31c383495b1a53b6313e13c6d9

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result

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.