ISRC FRZ132113020
Verified recording
FRZ132113020 is “L'estro armonico. Concerto No. 1 for 4 Violins in D Major, Op. 3, RV 549: II. Largo, e spiccato” by Antonio Vivaldi,
registered on the CopyrightChains blockchain with CopyrightID
0xef26f68992fd29bc1c3471b8c75ec571e9962bb4498fed7b7bafcdb36cbbd7e0 and independently timestamped
in Bitcoin block 960183 on 2026-07-30.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ132113020.
Recording identifiers
- ISRC
- FRZ132113020
- Title
- L'estro armonico. Concerto No. 1 for 4 Violins in D Major, Op. 3, RV 549: II. Largo, e spiccato
- Artist
- Antonio Vivaldi
- CopyrightID (CopyrightChains transaction hash)
0xef26f68992fd29bc1c3471b8c75ec571e9962bb4498fed7b7bafcdb36cbbd7e0
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-30T01:10:20+00:00
- Bitcoin block
- 960183
- Canonical record hash
sha256:056531aa957f7c41a06390329f0355d9cb6af2f27938f6755f535c7efd0b86b9- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ132113020
- Bitcoin block existence check
- https://blockstream.info/api/block/960183
Full record
Track page: L'estro armonico. Concerto No. 1 for 4 Violins in D Major, Op. 3, RV 549: II. Largo, e spiccato · Machine-readable JSON-LD