ISRC USPMZ1717801
Verified recording
USPMZ1717801 is “String Quartet in C Major, Op. 74 No. 1, Hob. III:72: I. Allegro moderato” by Joseph Haydn,
registered on the CopyrightChains blockchain with CopyrightID
0x102d03bd36ae0b2b17aa8a7798cfbd9a430cf36520fcef8cd55f7f59660a979d 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/USPMZ1717801.
Recording identifiers
- ISRC
- USPMZ1717801
- Title
- String Quartet in C Major, Op. 74 No. 1, Hob. III:72: I. Allegro moderato
- Artist
- Joseph Haydn
- CopyrightID (CopyrightChains transaction hash)
0x102d03bd36ae0b2b17aa8a7798cfbd9a430cf36520fcef8cd55f7f59660a979d
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:20:19+00:00
- Bitcoin block
- 957118
- Canonical record hash
sha256:618ad1e5d749f0ffedcd0bb5f293386b1ac4e861af70b1de214f08dc1fc3c6fe- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USPMZ1717801
- Bitcoin block existence check
- https://blockstream.info/api/block/957118
Full record
Track page: String Quartet in C Major, Op. 74 No. 1, Hob. III:72: I. Allegro moderato · Machine-readable JSON-LD