Primitive

Recording by John Cage.

Recording identifiers

ISRC
HKI190020410
CopyrightID (CopyrightChains transaction hash)
0xf594f66c8b5f73f3f8cd365b6790563d0744a2775f22034e5d057a69d0c114f0
Copyright registration time
2026-07-31T22:11:26+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-31T22:27:44Z
Bitcoin block
960473
Canonical record hash
sha256:124c51e153ca2d8b4e73dad9628ed5f060a7bb67a7d18d54558749a40553fb51

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.