ISRC FRZ132113340
Verified recording
FRZ132113340 is “L'estro armonico. Concerto No. 4 for 4 Violins in E Minor, Op. 3, RV 550: II. Allegro assai” by Antonio Vivaldi,
registered on the CopyrightChains blockchain with CopyrightID
0xa0bd70745fc2357c6ab2585c432d6547f43eef305bd8e16a82f0d6d38cc4c67e 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/FRZ132113340.
Recording identifiers
- ISRC
- FRZ132113340
- Title
- L'estro armonico. Concerto No. 4 for 4 Violins in E Minor, Op. 3, RV 550: II. Allegro assai
- Artist
- Antonio Vivaldi
- CopyrightID (CopyrightChains transaction hash)
0xa0bd70745fc2357c6ab2585c432d6547f43eef305bd8e16a82f0d6d38cc4c67e
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:20:19+00:00
- Bitcoin block
- 957118
- Canonical record hash
sha256:d61eeeb6fe4f1c9a05190d94599ccf570cdeb1b3f555e7f92564b72a10baf9dd- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ132113340
- Bitcoin block existence check
- https://blockstream.info/api/block/957118
Full record
Track page: L'estro armonico. Concerto No. 4 for 4 Violins in E Minor, Op. 3, RV 550: II. Allegro assai · Machine-readable JSON-LD