ISRC DEF057001631
Verified recording
DEF057001631 is “Concerto for 2 Violins in A Minor, RV 523: II. Largo” by Antonio Vivaldi,
registered on the CopyrightChains blockchain with CopyrightID
0xfd2cee1df345b6d5ebd77ca9b357c9385b72e555146ea683da1790239f2835b5 and independently timestamped
in Bitcoin block 956304 on 2026-07-02.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057001631.
Recording identifiers
- ISRC
- DEF057001631
- Title
- Concerto for 2 Violins in A Minor, RV 523: II. Largo
- Artist
- Antonio Vivaldi
- CopyrightID (CopyrightChains transaction hash)
0xfd2cee1df345b6d5ebd77ca9b357c9385b72e555146ea683da1790239f2835b5
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-02T03:55:08+00:00
- Bitcoin block
- 956304
- Canonical record hash
sha256:07104d9ce20ba3102437ded90fa8bc05f48264544a7b4f5ae4edcf3936a70883- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057001631
- Bitcoin block existence check
- https://blockstream.info/api/block/956304
Full record
Track page: Concerto for 2 Violins in A Minor, RV 523: II. Largo · Machine-readable JSON-LD