25の練習曲作品100　第16曲　ひそかな嘆き

Recording identifiers

ISRC

JPU941800087

CopyrightID (CopyrightChains transaction hash)

0x942d88d9c2c6096f1e81b96a46ea465f1c447420bb25ce5245644dd6c4b774f1

Copyright registration time

2026-07-31T05:46:53+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T05:49:18Z

Bitcoin block

960355

Canonical record hash

sha256:7b6af35444c103881a789be1424887fe53994193b04d3ae4680f6c6747d9ffef

• 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.