String Quartet No. 1 in E Minor, JB 1:105: II. Allegro moderato à la polka

Recording identifiers

ISRC

CZD942400861

CopyrightID (CopyrightChains transaction hash)

0xd41d02a034cd8ea9b913d1398216b5ecbf373308d6d207e9dc7a0692ccac6e3d

Copyright registration time

2026-07-30T06:12:25+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-30T06:39:12Z

Bitcoin block

960216

Canonical record hash

sha256:bdab3a275d8d6eb8e6a8c327ca800023ebca7aec3f6dc7f53f7d8dd2904857c1

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
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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.