ISRC DEF057209042
Verified recording
DEF057209042 is “Concerto for 4 Violins in E Minor, Op. 3/4, RV 550 (L'estro armonico No. 4): II. Allegro assai” by Antonio Vivaldi,
registered on the CopyrightChains blockchain with CopyrightID
0x3ff04ddf9ba5c15feacfcab877a34c6097c16ef8385488e5b10cef8ccd459834 and independently timestamped
in Bitcoin block 960191 on 2026-07-30.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057209042.
Recording identifiers
- ISRC
- DEF057209042
- Title
- Concerto for 4 Violins in E Minor, Op. 3/4, RV 550 (L'estro armonico No. 4): II. Allegro assai
- Artist
- Antonio Vivaldi
- CopyrightID (CopyrightChains transaction hash)
0x3ff04ddf9ba5c15feacfcab877a34c6097c16ef8385488e5b10cef8ccd459834
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-30T01:51:26+00:00
- Bitcoin block
- 960191
- Canonical record hash
sha256:7884f3e1a0d247f6f722af1cffbeeb668270b5010f034a152f30364789a5f940- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057209042
- Bitcoin block existence check
- https://blockstream.info/api/block/960191
Full record
Track page: Concerto for 4 Violins in E Minor, Op. 3/4, RV 550 (L'estro armonico No. 4): II. Allegro assai · Machine-readable JSON-LD