ISRC USSM10407168
Verified recording
USSM10407168 is “String Quartet in F Major, Op. 3 No. 5, Hob. III:17: II. Serenade. Andante cantabile” by Roman Hoffstetter,
registered on the CopyrightChains blockchain with CopyrightID
0xc1b10e909a56fee9737822a08f7980f27df0a032c2197c4693c379a981367383 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/USSM10407168.
Recording identifiers
- ISRC
- USSM10407168
- Title
- String Quartet in F Major, Op. 3 No. 5, Hob. III:17: II. Serenade. Andante cantabile
- Artist
- Roman Hoffstetter
- CopyrightID (CopyrightChains transaction hash)
0xc1b10e909a56fee9737822a08f7980f27df0a032c2197c4693c379a981367383
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:20:19+00:00
- Bitcoin block
- 957118
- Canonical record hash
sha256:1622ba527ec9f4fcf465bf43b2cfc8444c2efc7aa08ba0ee66d0f7c9ff657f0f- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10407168
- Bitcoin block existence check
- https://blockstream.info/api/block/957118
Full record
Track page: String Quartet in F Major, Op. 3 No. 5, Hob. III:17: II. Serenade. Andante cantabile · Machine-readable JSON-LD