ISRC USB8U1021145
Verified recording
USB8U1021145 is “Variations II” by John Cage,
registered on the CopyrightChains blockchain with CopyrightID
0x38c4d6b740561c3d721e2757a963fb2595467b8a5c71cba72d80f64ffe3b07c3 and independently timestamped
in Bitcoin block 957118 on 2026-07-08.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB8U1021145.
Recording identifiers
- ISRC
- USB8U1021145
- Title
- Variations II
- Artist
- John Cage
- CopyrightID (CopyrightChains transaction hash)
0x38c4d6b740561c3d721e2757a963fb2595467b8a5c71cba72d80f64ffe3b07c3
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:20:19+00:00
- Bitcoin block
- 957118
- Canonical record hash
sha256:f33b94e424a44ab8d6bb89c9d2f327e6d72a8ccd7279f9acca0e1bdc09c378c5- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB8U1021145
- Bitcoin block existence check
- https://blockstream.info/api/block/957118