String Quartet No. 12 in E-Flat Major, Op. 127: I. Maestoso - Allegro

Recording identifiers

ISRC

FRZ131711010

CopyrightID (CopyrightChains transaction hash)

0x521a8ea205aae53416c29294adf99391547e1392f358c4887061e6f6d82a9d3b

Copyright registration time

2026-07-07T02:01:19+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-08T03:20:19Z

Bitcoin block

957118

Canonical record hash

sha256:e3fed10ea2cf914b5cfc705b7284e5aca73dd0881c9581af6a0a70284cf8ad68

• Verify the CopyrightID on CopyrightChains
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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.