Nonsense Madrigals: 4. Flying Robert

Recording by György Ligeti.

Recording identifiers

ISRC
USSM19503347
CopyrightID (CopyrightChains transaction hash)
0x15706bb49fcd3438cd61f884fb43d7389f5d50fb928dbe4bf61e690719d394f1
Copyright registration time
2026-07-07T15:20:36+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:8202d68b250006c351142fdf0452e22c5a6a9d69d0dd914492db710356628f95

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.