ISRC FRZ140815120
Verified recording
FRZ140815120 is “String Quartet in C major, Hob.III:39 "The Bird": IV. Rondo (Presto)” by Joseph Haydn,
registered on the CopyrightChains blockchain with CopyrightID
0x2febde83e21240b5381041c966e9e7f872d33950374ce9854a3c0ea590051cd3 and independently timestamped
in Bitcoin block 960354 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140815120.
Recording identifiers
- ISRC
- FRZ140815120
- Title
- String Quartet in C major, Hob.III:39 "The Bird": IV. Rondo (Presto)
- Artist
- Joseph Haydn
- CopyrightID (CopyrightChains transaction hash)
0x2febde83e21240b5381041c966e9e7f872d33950374ce9854a3c0ea590051cd3
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T05:48:18+00:00
- Bitcoin block
- 960354
- Canonical record hash
sha256:b8561d7f0fed280c82e6bc8d96036b4229f73bb26d563316f719e9fa663d18c4- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140815120
- Bitcoin block existence check
- https://blockstream.info/api/block/960354
Full record
Track page: String Quartet in C major, Hob.III:39 "The Bird": IV. Rondo (Presto) · Machine-readable JSON-LD