Thirteen Harmonies: VII. Harmony 11

Recording by John Cage.

Recording identifiers

ISRC
DEB161000310
CopyrightID (CopyrightChains transaction hash)
0x9cfbc855875e798e2fa1b0bae072e9787070f12777b8d45e86d159502405dd8c
Copyright registration time
2026-07-07T07:11:05+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:5847e4bc809d4421035e30a132a2c2fb8eb610aec02fd8132f8a4a98779b2c35

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.