ISRC USSM18800401
Verified recording
USSM18800401 is “String Quartet in F Major, Op. 3, No. 5, Hob. III:17: II. Andante cantabile” by Roman Hoffstetter,
registered on the CopyrightChains blockchain with CopyrightID
0x6103ebad7bb061aab48dd85ac4829ccc6a5aea5026602288abdb39bb7a240f45 and independently timestamped
in Bitcoin block 953520 on 2026-06-13.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM18800401.
Recording identifiers
- ISRC
- USSM18800401
- Title
- String Quartet in F Major, Op. 3, No. 5, Hob. III:17: II. Andante cantabile
- Artist
- Roman Hoffstetter
- CopyrightID (CopyrightChains transaction hash)
0x6103ebad7bb061aab48dd85ac4829ccc6a5aea5026602288abdb39bb7a240f45
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-06-13T13:32:09+00:00
- Bitcoin block
- 953520
- Canonical record hash
sha256:8db0a9bda7d00e4c1771dba4f124f739aed252ea345ed32d8166d742a5facbc0- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM18800401
- Bitcoin block existence check
- https://blockstream.info/api/block/953520
Full record
Track page: String Quartet in F Major, Op. 3, No. 5, Hob. III:17: II. Andante cantabile · Machine-readable JSON-LD