study§steady day! (feat. Ceui & haruka shimotsuki)

Recording identifiers

ISRC

TCJPN2173794

Release date of the album this recording appears on

2019-09-27

CopyrightID (CopyrightChains transaction hash)

0xac0f89de4517d8382fbe814f201a21682399b4c43b6199935c3773ccda227f38

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-29T14:28:24Z

Bitcoin block

960117

Canonical record hash

sha256:febe5a4c3dd49ae7348bcad9c1593ccd01297b2ffe09d12a16f8e5a486d3d41e

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC TCJPN2173794

What this proof establishes

This recording was released in 2019, 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.