ISRC ITK601700651

Verified recording

ITK601700651 is “Quartet: IV. Fast” by John Cage, registered on the CopyrightChains blockchain with CopyrightID 0xd9a78a45847d4000d69a1d518282140c00f746cb6d35ebf16aa8bcbc43100ae4 and independently timestamped in Bitcoin block 960478 on 2026-07-31. Verify the canonical record, hash, and Bitcoin attestation at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITK601700651.

Recording identifiers

ISRC
ITK601700651
Title
Quartet: IV. Fast
Artist
John Cage
CopyrightID (CopyrightChains transaction hash)
0xd9a78a45847d4000d69a1d518282140c00f746cb6d35ebf16aa8bcbc43100ae4

Dual-chain proof evidence

Bitcoin-attested timestamp
2026-07-31T23:30:38+00:00
Bitcoin block
960478
Canonical record hash
sha256:18032dcb3a3acb4caa3a085305bc449d13c4c23ce2b929c5f985a0a1cbf911de
Verification API (6-check server-side result)
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITK601700651
Bitcoin block existence check
https://blockstream.info/api/block/960478

Full record

Track page: Quartet: IV. Fast · Machine-readable JSON-LD