子守歌 変ニ長調 Op.57

Recording identifiers

ISRC

JPVI08606810

CopyrightID (CopyrightChains transaction hash)

0xd2f8ca77c9e85dd657c6add866f9206b11b092f74b7165d2b870300e1acf389f

Copyright registration time

2026-06-17T04:38:00+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-06-17T19:07:14Z

Bitcoin block

954130

Canonical record hash

sha256:f63708f9e068da042f5661c7baa5e49e0a5c9d2307ae93069d4572c66f5d51e8

• 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.