Zwei Quartette für 2 Violinen, Viola und Violoncello in C Minor, Op. 51, No. 1: I. Allegro

Recording identifiers

ISRC

DEC291562301

Release date of the album this recording appears on

2015-03-20

CopyrightID (CopyrightChains transaction hash)

0x65f7f7986d6f26594e511979552ab4fac6cc588dbba4c93c2cd8e7659b71bdc8

Copyright registration time

2026-07-07T01:00:49+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-08T03:20:19Z

Bitcoin block

957118

Canonical record hash

sha256:4d2f3cf34b1fb7da169b7a068ad3e0d71b322924b112c772d91b1c3895e5808f

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC DEC291562301

What this proof establishes

This recording was released in 2015, 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.