Once Again

Recording identifiers

ISRC

JPN100901341

Release date of the album this recording appears on

2010-02-24

CopyrightID (CopyrightChains transaction hash)

0x57342960e25f0291f26d585cfc310dcd86ea4cc0e45cbeee091dc1c581d9ee87

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-30T06:39:12Z

Bitcoin block

960216

Canonical record hash

sha256:f2e728e0ad04a705a945c3cdd15036b68d56bebbe6017051006ec108a503acd2

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC JPN100901341

What this proof establishes

This recording was released in 2010, before generative AI. ProofProfile's catalogue derives from the pre-2022 AcousticBrainz and MusicBrainz source corpus, and 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.