Cheap Imitation (Version for Solo Piano): III. —

Recording by John Cage.

Recording identifiers

ISRC
US4BP2132704
CopyrightID (CopyrightChains transaction hash)
0xcc1063e7d9f81a4b515bbd2baeb0aaf69216641672ebde7cc78938bc30c66c16
Copyright registration time
2026-07-07T14:58:24+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:6050fcb714098bc0f936e704c71ea497e63366ae8ddfef90a4719a174b4b4c45

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.