17さいのうた。

Recording by 『ユイカ』.

Recording identifiers

ISRC
JPPO02201563
CopyrightID (CopyrightChains transaction hash)
0x5e9584179268b79e15dd63576b53727f462fbd797390ef2e56afe7ad82015916
Copyright registration time
2026-06-04T06:35:59+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:22:41Z
Bitcoin block
957120
Canonical record hash
sha256:397beecd6d7acca35a079c834ceac44167399a4639e18fdadb0cf7e4c01e1003

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.