Piano Concerto: II. Lento e deserto

Recording by György Ligeti.

Recording identifiers

ISRC
FR4KC2402013
CopyrightID (CopyrightChains transaction hash)
0xc9f9a2c12ed139d72d3c8f7b2c2358f57b99b016a0e1df08f77d730b18bc5099
Copyright registration time
2026-07-07T05:38:22+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:158fd265a690fa96d7bf960c8f88e0dd6381d2db5915bcd55b2e93457e483206

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.