ISRC USSM11103447
Verified recording
USSM11103447 is “String Quartet No. 21 in D Major, K. 575 "Prussian No. 1": I. Allegretto” by Wolfgang Amadeus Mozart,
registered on the CopyrightChains blockchain with CopyrightID
0x10a34aa6186e7f4bd8e3c3e4a4580afc76983efa6e8c727bd420508e94c3adbe and independently timestamped
in Bitcoin block 960138 on 2026-07-29.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11103447.
Recording identifiers
- ISRC
- USSM11103447
- Title
- String Quartet No. 21 in D Major, K. 575 "Prussian No. 1": I. Allegretto
- Artist
- Wolfgang Amadeus Mozart
- CopyrightID (CopyrightChains transaction hash)
0x10a34aa6186e7f4bd8e3c3e4a4580afc76983efa6e8c727bd420508e94c3adbe
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-29T19:35:34+00:00
- Bitcoin block
- 960138
- Canonical record hash
sha256:acb9e2a70d53c6c5b38a8df816acecf1ff0fdc3cacd309da328b8ecfed44a10f- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11103447
- Bitcoin block existence check
- https://blockstream.info/api/block/960138
Full record
Track page: String Quartet No. 21 in D Major, K. 575 "Prussian No. 1": I. Allegretto · Machine-readable JSON-LD