String Quartet No. 15 in D Minor, K. 421: II. Andante

Recording identifiers

ISRC

DEF059102322

Release date of the album this recording appears on

2005-01-01

CopyrightID (CopyrightChains transaction hash)

0xc05be322d57483577837dbb1d377c8a58e4991f3db2bc4d98be1afe4a0503a6e

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T16:33:26Z

Bitcoin block

960435

Canonical record hash

sha256:f868d3629a73f4c88fc59f8a0b40dc8b60933d6a8cfcd4b423ee228a063b6cdf

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
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• Recording evidence summary for ISRC DEF059102322

What this proof establishes

This recording was released in 2005, 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.