哀愁ボーイ

Recording by Kyoko Koizumi.

Recording identifiers

ISRC
JPVI08401080
CopyrightID (CopyrightChains transaction hash)
0x4fbb941b892be89623d7bae84d30d61f1976a31f59b6c679fe03e003315e09b1
Copyright registration time
2026-07-30T21:11:18+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-30T21:35:24Z
Bitcoin block
960317
Canonical record hash
sha256:3cd96d1fafec90aaa3e717d19f8ef7a2fd115b6fce8252d8a090d104fa3c5aad

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.