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Recording by Kyoko Koizumi.

Recording identifiers

ISRC
JPVI01225710
Release date of the album this recording appears on
2017-05-17
CopyrightID (CopyrightChains transaction hash)
0x21d5fde2281f9ecb7874d3c06463be769567cbed6c6eb0ded60ab88e3b676bd8
Copyright registration time
2026-06-18T14:43:16+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:e2022cb3d59bc2af3c73b5978c3e92d109beb7a615abb09bdc801ea1608b5f20

What this proof establishes

This recording was released in 2017, before generative AI. ProofProfile's catalogue derives from the pre-2022 AcousticBrainz and MusicBrainz source corpus, and 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.