汚れっちまった悲しみに

Recording by 友川かずき.

Recording identifiers

ISRC
JPKI07812000
CopyrightID (CopyrightChains transaction hash)
0x63c916c39b827b3cc71a24e70884af847965a067b2c21703e8b8fdeea3ec9aad
Copyright registration time
2026-07-29T11:58:46+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-29T12:35:17Z
Bitcoin block
960105
Canonical record hash
sha256:be41d39f060d698ad400bc68eef4c0834829445e6f9a0f0c93d8da8872b206fc

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.