ISRC CALC41501071
Verified recording
CALC41501071 is “Sonata No. 3 in B Minor, Op. 58: I. Allegro maestoso” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0x74703bbc667974fa3466f7fa771c8bed3e87884fc4043a72f7a0796876cf9dff 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/CALC41501071.
Recording identifiers
- ISRC
- CALC41501071
- Title
- Sonata No. 3 in B Minor, Op. 58: I. Allegro maestoso
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0x74703bbc667974fa3466f7fa771c8bed3e87884fc4043a72f7a0796876cf9dff
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:20:19+00:00
- Bitcoin block
- 957118
- Canonical record hash
sha256:e08e6a93c081a5865aacb33d381a58fe5780a080aa6bfbd5e7567b366a6b2537- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CALC41501071
- Bitcoin block existence check
- https://blockstream.info/api/block/957118
Full record
Track page: Sonata No. 3 in B Minor, Op. 58: I. Allegro maestoso · Machine-readable JSON-LD