Ligeti: String Quartet No. 1 "Métamorphoses nocturnes": IV. Presto

Recording identifiers

ISRC

GBAYC9903804

CopyrightID (CopyrightChains transaction hash)

0x68a911c0c50fd1331dde5022eb4fcc809b21ec8539e67fcc5c9494b7ae169466

Copyright registration time

2026-07-31T22:24:04+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T23:30:38Z

Bitcoin block

960478

Canonical record hash

sha256:970078d1f2a5cd653ee664a611f8f86763a6a7671e63406178250b3088e4a0ec

• 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.