Mazurka in A Minor Wn 60

Recording identifiers

ISRC

DEPI82502998

CopyrightID (CopyrightChains transaction hash)

0xc6512ad38499361ed48cba4fec1b2fb23551359b40148b0d0d2b72dde7aa2d7c

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-29T21:09:47Z

Bitcoin block

960144

Canonical record hash

sha256:99db6effd16ebcf52e6126332503094f7dc8860986a74376c9406117e0ea2065

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result

What this proof establishes

This recording belongs to ProofProfile's historical evidence base derived from the pre-2022 AcousticBrainz and MusicBrainz corpus. 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.