ISRC CALC42589404
Verified recording
CALC42589404 is “Concerto for Two Violins in D Minor, BWV 1043: I. Vivace” by Johann Sebastian Bach,
registered on the CopyrightChains blockchain with CopyrightID
0x691ab080e1bc98877d7d5b52dccf99d2290797903d1ebf26eef50a2e4688d653 and independently timestamped
in Bitcoin block 957073 on 2026-07-07.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CALC42589404.
Recording identifiers
- ISRC
- CALC42589404
- Title
- Concerto for Two Violins in D Minor, BWV 1043: I. Vivace
- Artist
- Johann Sebastian Bach
- CopyrightID (CopyrightChains transaction hash)
0x691ab080e1bc98877d7d5b52dccf99d2290797903d1ebf26eef50a2e4688d653
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-07T18:39:05+00:00
- Bitcoin block
- 957073
- Canonical record hash
sha256:21f3e05117f4f287951c68d686c424331be79410890d2d39c7bd744363d7224f- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CALC42589404
- Bitcoin block existence check
- https://blockstream.info/api/block/957073
Full record
Track page: Concerto for Two Violins in D Minor, BWV 1043: I. Vivace · Machine-readable JSON-LD