Mazurka No. 13 in A Minor, Op. 17 No. 4

Recording identifiers

ISRC

DEF058500340

Release date of the album this recording appears on

2010-01-01

CopyrightID (CopyrightChains transaction hash)

0x3770bd32e749386dc7073d1982b6941f5c956416f2ff5f0d289840d378a55fbf

Copyright registration time

2026-06-11T06:03:51+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-06-13T17:25:41Z

Bitcoin block

953536

Canonical record hash

sha256:a81023cd7e282ac95b3b096db6d114df6693482793ec026dacd843efb88c89b8

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC DEF058500340

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.