Four Walls, Act I: Dance (II)

Recording by John Cage.

Recording identifiers

ISRC
BER182279306
CopyrightID (CopyrightChains transaction hash)
0x8e913802c7f218ef431a8bb9e08d87c45f65c2038f782ef135d1f22c25664878
Copyright registration time
2026-07-07T15:06:54+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:00eb17c9d93cedbb8d1f4a6e121723fa57cc755964cb7702fbd79c52772d0af1

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.