Letter

Recording by Miho Tsujibayashi.

Recording identifiers

ISRC
TCJPJ1975099
CopyrightID (CopyrightChains transaction hash)
0xa61814ec3a55e4afa6e8f155723649c236dd89205e440d8d6075f493cfaf8c8d
Copyright registration time
2026-07-30T18:20:27+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-30T20:09:33Z
Bitcoin block
960302
Canonical record hash
sha256:58fe772c824e26c4f75cfa776f4bb2407a73514ffe4d23351576fc07bf6bc25c

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.