集中できない

Recording by Kyoko Koizumi.

Recording identifiers

ISRC
JPVI08902010
CopyrightID (CopyrightChains transaction hash)
0x028745ba783e6e057cc1ed9f6b2745b727631fa429b00f778d389dbcf6d33719
Copyright registration time
2026-07-30T11:49:08+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-30T12:51:24Z
Bitcoin block
960259
Canonical record hash
sha256:444f8607c2efe00b19f9275c3dd3df5814a39727303bf563c6e1b6850e97d18a

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.