ISRC USSM19400689
Verified recording
USSM19400689 is “Sonata for Solo Viola: II. Loop” by György Ligeti,
registered on the CopyrightChains blockchain with CopyrightID
0xcb8c15bca49b6a95cd76b318ea14ff5b2d2ccff96fa56c440c7470792e05d34f and independently timestamped
in Bitcoin block 960441 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19400689.
Recording identifiers
- ISRC
- USSM19400689
- Title
- Sonata for Solo Viola: II. Loop
- Artist
- György Ligeti
- CopyrightID (CopyrightChains transaction hash)
0xcb8c15bca49b6a95cd76b318ea14ff5b2d2ccff96fa56c440c7470792e05d34f
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T17:29:52+00:00
- Bitcoin block
- 960441
- Canonical record hash
sha256:46ed2c75bdf0aef6b34c628ed455ce3e08de1ce0ce58f200b12916094a331c1e- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19400689
- Bitcoin block existence check
- https://blockstream.info/api/block/960441
Full record
Track page: Sonata for Solo Viola: II. Loop · Machine-readable JSON-LD