師を求めて

Recording by Takashi Kako.

Recording identifiers

ISRC
JP92N2599030
CopyrightID (CopyrightChains transaction hash)
0xe901d5d672156054373a16338f0aad212355f85dd4881b6c826d01304c529f7b
Copyright registration time
2026-07-06T07:35:52+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-07T18:39:05Z
Bitcoin block
957073
Canonical record hash
sha256:3be4c698521b20ab696452b2d49ae0d7669f764d3c06e624e93676d8a87ba497

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.