Thirteen Harmonies: IV. Harmony 21
Recording by John Cage.
Recording identifiers
- ISRC
- DEB161000307
- CopyrightID (CopyrightChains transaction hash)
- 0x481c763fa8dd490d7be7682e3cb19485e27e0ac4facf9e40d48fedbbcd42e26d
- Copyright registration time
- 2026-07-30T08:03:46+00:00
OpenTimestamps proof evidence
- Bitcoin-attested timestamp
- 2026-07-30T08:30:10Z
- Bitcoin block
- 960229
- Canonical record hash
- sha256:62b8c3aa5185a62316cc697a2ecd061488810f63d5c6cf1ff2a0a0b69c91f749
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.