Ligeti: String Quartet No. 2: I. Allegro nervoso

Recording identifiers

ISRC

GBAYC9903814

CopyrightID (CopyrightChains transaction hash)

0xfc7d10d70268153f09c87f8cb7e99a52c31df6a23e582f5767434ebe1fdba537

Copyright registration time

2026-07-30T13:34:15+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-30T14:36:16Z

Bitcoin block

960264

Canonical record hash

sha256:61830fca479e7f4f678439a892f6d47c6e26584fa24358676f78e5636ee0e622

• 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.