ISRC USB8U1612646
Verified recording
USB8U1612646 is “Sonata for Piano 4 Hands in C Major, K. 521: II. Andante” by Wolfgang Amadeus Mozart,
registered on the CopyrightChains blockchain with CopyrightID
0x47fa6b9c2a7532fbe4231372271b2c5330544fcd74d662c40fc7eda001d717a7 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/USB8U1612646.
Recording identifiers
- ISRC
- USB8U1612646
- Title
- Sonata for Piano 4 Hands in C Major, K. 521: II. Andante
- Artist
- Wolfgang Amadeus Mozart
- CopyrightID (CopyrightChains transaction hash)
0x47fa6b9c2a7532fbe4231372271b2c5330544fcd74d662c40fc7eda001d717a7
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T21:25:57+00:00
- Bitcoin block
- 960468
- Canonical record hash
sha256:e0e78c6445cb91852e4287baa144cca5879e42316fe2027fd709383bb3d01886- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB8U1612646
- Bitcoin block existence check
- https://blockstream.info/api/block/960468
Full record
Track page: Sonata for Piano 4 Hands in C Major, K. 521: II. Andante · Machine-readable JSON-LD