Model 40

Recording by Karlheinz Stockhausen.

Recording identifiers

ISRC
UKA682100039
CopyrightID (CopyrightChains transaction hash)
0x9f53ea2871c3c7e1c4fd10718d953b655bf2ef92f7710d0ad73d1071ca475b01
Copyright registration time
2026-07-31T16:11:47+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-31T16:33:26Z
Bitcoin block
960435
Canonical record hash
sha256:993ee15d505a9feb04d081f2dd71c41751b749303ec96163a0753fad88771f6a

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.