ピアノ・ソナタ第7番 ハ長調 K.309(284b)　第2楽章　アンダンテ・ウン・ポーコ・アダージョ

Recording identifiers

ISRC

JPN201300500

CopyrightID (CopyrightChains transaction hash)

0xfb32a399d677d59c6236b288f68a157a2c6f9f93620037080ddcbd5443a8d6a3

Copyright registration time

2026-07-07T08:33:17+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-08T03:20:19Z

Bitcoin block

957118

Canonical record hash

sha256:a763d8810eb0b12cee32ddf6847840f315e56b5b43ae5d2a8c1ad6e118754f61

• 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.