friend

Recording by いとうかなこ.

Recording identifiers

ISRC
JPR501002074
CopyrightID (CopyrightChains transaction hash)
0x9a21baa5bc3ec70a7926bdc1f068626a30f042ecf0a35d1681cb80d1a432619f
Copyright registration time
2026-06-24T08:13:32+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:55:08Z
Bitcoin block
956304
Canonical record hash
sha256:b2c1bc04e8a0fdf42e10575965760f5d299aac8d6c7a3b362091bec478a16e76

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.