ISRC USSM19400690
Verified recording
USSM19400690 is “Sonata for Solo Viola: III. Facsar” by György Ligeti,
registered on the CopyrightChains blockchain with CopyrightID
0x325d62cfaa2e3d44e5f905f0e3aac2501010f3f4b1b62b79a6a7ce210085e5b0 and independently timestamped
in Bitcoin block 960468 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19400690.
Recording identifiers
- ISRC
- USSM19400690
- Title
- Sonata for Solo Viola: III. Facsar
- Artist
- György Ligeti
- CopyrightID (CopyrightChains transaction hash)
0x325d62cfaa2e3d44e5f905f0e3aac2501010f3f4b1b62b79a6a7ce210085e5b0
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T21:25:57+00:00
- Bitcoin block
- 960468
- Canonical record hash
sha256:3ec1fcbbaeeb2618ef6aa371824bfdaadb19522536035bf939a9a820742c8cc2- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19400690
- Bitcoin block existence check
- https://blockstream.info/api/block/960468
Full record
Track page: Sonata for Solo Viola: III. Facsar · Machine-readable JSON-LD