Primitive

Recording by John Cage.

Recording identifiers

ISRC
ITK5L1300371
CopyrightID (CopyrightChains transaction hash)
0x4179b774fd81faa6425e71bb1d807206c903b6b68beb9419e3d951e1c3540b19
Copyright registration time
2026-07-06T23:11:42+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:2fd16fd4c0e3b8977c4d8327b41f8e6f8bdbc63b56b0d237f8aa8f458008b265

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.