Metamorphosis: IV

Recording by John Cage.

Recording identifiers

ISRC
DEB330284413
CopyrightID (CopyrightChains transaction hash)
0xc190bc7e92436b3a6e4f2b43628c04bc27e2f7265a3d9908fed03b2239d74c95
Copyright registration time
2026-07-29T21:21:51+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-29T21:51:49Z
Bitcoin block
960150
Canonical record hash
sha256:ddc6282329abe7cb951953cc3edc9bc7041be9ebba11a8eadd0d795f4d9b0ed6

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.