Thirteen Harmonies: V. Harmony 19

Recording by John Cage.

Recording identifiers

ISRC
DEB161000308
CopyrightID (CopyrightChains transaction hash)
0xc85550a438a6d42abaa3792234d8914091312a9dc5606fad4ed03721e7021889
Copyright registration time
2026-07-07T04:30:19+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:0a9d7a5143ac66e444f1c285657ccfbc6c4821a6e4805a27e57b89ac969e9c1d

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.