さよなら青春

Recording identifiers

ISRC

JPPO02100190

CopyrightID (CopyrightChains transaction hash)

0x9755d646469331c91510a238694fab6afce9a09e46f60b5e25f7e2c61f845e9b

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-08-01T04:30:37Z

Bitcoin block

960509

Canonical record hash

sha256:691d46ddb60ddb52a909990b471cb073c015fec83a2e75b93d70155b7bf69e46

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result

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.