Metamorphosis: II

Recording by John Cage.

Recording identifiers

ISRC
DEB330284411
CopyrightID (CopyrightChains transaction hash)
0xfe85e598fb2f2dbdc67caadfd1f325472665281831355a0cd6bfe9a92c7ab3d8
Copyright registration time
2026-07-29T13:36:27+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-29T14:28:24Z
Bitcoin block
960117
Canonical record hash
sha256:e75a99ffd797a0366f284e73a3cda4c302436ad1b774975d899c43280dd2544e

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.