Chopin: Nocturne No. 10 in A-Flat Major, Op. 32 No. 2

Recording identifiers

ISRC

FRZ111100614

Release date of the album this recording appears on

2011-01-01

CopyrightID (CopyrightChains transaction hash)

0x4433cc5d238338c431c74cf3db5db6f8b3ae2e599ed48d7ba5e7277de5b93d16

Copyright registration time

2026-07-31T12:06:11+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T12:24:41Z

Bitcoin block

960397

Canonical record hash

sha256:1b018cee53104ab42706d0282ffd0740770420e60a3880f6f163798dcbe7f231

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC FRZ111100614

What this proof establishes

This recording was released in 2011, 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.