おなじみの短い手紙

Recording by Wataru Takada.

Recording identifiers

ISRC
JPKI07148228
CopyrightID (CopyrightChains transaction hash)
0x41591204c8304af01f1eb40b74296d642a05d5159f476b7be920e6501c1a166d
Copyright registration time
2026-06-26T01:53:21+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:55:08Z
Bitcoin block
956304
Canonical record hash
sha256:4a800ad4e9f228fd7357b4694061b55442c749c11f3a533a0360bff490b130fa

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.