Hymns & Variations: Var. 5

Recording by John Cage.

Recording identifiers

ISRC
FINDE2200014
CopyrightID (CopyrightChains transaction hash)
0x7fb4bdba910486c254b8a05c0b9998f958bb642748e492596eebeeea27aaae22
Copyright registration time
2026-07-07T10:59:19+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:54e0b0834d2eb06e7476ffa3760061888933f31d620314189b0d0405bfa96db6

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.