即興曲 第4番 嬰ハ短調 作品66《幻想即興曲》

Recording identifiers

ISRC

JPPO00307140

CopyrightID (CopyrightChains transaction hash)

0xefabe9710e764967f6655cd4a0124f263c16d6109f2de0e48c7338167308d079

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T02:51:48Z

Bitcoin block

960337

Canonical record hash

sha256:1c17ddc9843508e0cce24075c548bb22f600e114d285e1815f2a3c87115e4548

• 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.