Thirteen Harmonies: III. Harmony 26

Recording by John Cage.

Recording identifiers

ISRC
DEB161000306
CopyrightID (CopyrightChains transaction hash)
0xd0ed4b3deb44ac582eb2492cf3984a71cd5615e1d4159b7bb28c6a01be7fe1ab
Copyright registration time
2026-07-30T20:22:48+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-30T20:35:49Z
Bitcoin block
960309
Canonical record hash
sha256:a3c4c031dd79122ac7b2f15b5bcde1a4853d2bdfd1b9f9a588df131063c43301

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.