Thirteen Harmonies: X. Harmony 28

Recording by John Cage.

Recording identifiers

ISRC
DEB161000316
CopyrightID (CopyrightChains transaction hash)
0x1686057af354be8bf2f086dfc275856b2c492db853c7d4cfefa89757113fcc8d
Copyright registration time
2026-07-31T00:45:29+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-31T02:19:15Z
Bitcoin block
960334
Canonical record hash
sha256:55f90085641dca5bb8dc77d39723e1ff2ba8150fc0de8a588b0300f53adc567d

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.