ISRC USFKZ0611011
Verified recording
USFKZ0611011 is “Concerto for 2 Violins in E-Flat Major, RV 515: II. Largo” by Antonio Vivaldi,
registered on the CopyrightChains blockchain with CopyrightID
0x08fd87c75e150619abfd1285348c79eaa24525fd6856284b0e30adf54d7a1df5 and independently timestamped
in Bitcoin block 960327 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFKZ0611011.
Recording identifiers
- ISRC
- USFKZ0611011
- Title
- Concerto for 2 Violins in E-Flat Major, RV 515: II. Largo
- Artist
- Antonio Vivaldi
- CopyrightID (CopyrightChains transaction hash)
0x08fd87c75e150619abfd1285348c79eaa24525fd6856284b0e30adf54d7a1df5
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T00:26:26+00:00
- Bitcoin block
- 960327
- Canonical record hash
sha256:6f875445498682e9d55bdcd31c6bf4a52909d15d273df1e0b60c1025220d4b00- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFKZ0611011
- Bitcoin block existence check
- https://blockstream.info/api/block/960327
Full record
Track page: Concerto for 2 Violins in E-Flat Major, RV 515: II. Largo · Machine-readable JSON-LD