Thirteen Harmonies: IX. Harmony 15

Recording by John Cage.

Recording identifiers

ISRC
DEB161000315
CopyrightID (CopyrightChains transaction hash)
0x15caf41032c57aa292aa5fddebcaa770dde68d50428173588c93f2334a36f48c
Copyright registration time
2026-07-07T13:51:44+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:21488718ddf14aae22af382ad610c1003538f976ad379661349440f5780b1e98

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.