ISRC FINDE2200013
Verified recording
FINDE2200013 is “Hymns & Variations: Var. 4” by John Cage,
registered on the CopyrightChains blockchain with CopyrightID
0x538514f205e06b66f2432d34e7777e2ea9c4dcf9954e95e4289fb2403d66c538 and independently timestamped
in Bitcoin block 960368 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FINDE2200013.
Recording identifiers
- ISRC
- FINDE2200013
- Title
- Hymns & Variations: Var. 4
- Artist
- John Cage
- CopyrightID (CopyrightChains transaction hash)
0x538514f205e06b66f2432d34e7777e2ea9c4dcf9954e95e4289fb2403d66c538
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T08:26:41+00:00
- Bitcoin block
- 960368
- Canonical record hash
sha256:84e5e95be59cd951d1ee9cfe48c4926c32012a171dc5526320aa455c19706e8d- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FINDE2200013
- Bitcoin block existence check
- https://blockstream.info/api/block/960368
Full record
Track page: Hymns & Variations: Var. 4 · Machine-readable JSON-LD