25 Ètudes Faciles Et Progressives, Op. 100: XXIII. Retour

Recording identifiers

ISRC

USGZ21034781

Release date of the album this recording appears on

2017-02-28

CopyrightID (CopyrightChains transaction hash)

0xace95661a18f782a988c111a02eb90b94bca233b6d33be657d9b148d24a04cec

Copyright registration time

2026-07-30T21:14:58+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-30T21:35:24Z

Bitcoin block

960317

Canonical record hash

sha256:daed4d05797d037bad169e7813b2ce79392f0fe8e32e7219806d0c954d473e88

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC USGZ21034781

What this proof establishes

This recording was released in 2017, 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.