ISRC CALC41800404
Verified recording
CALC41800404 is “Piano Concerto No. 1 in E Minor, Op. 11: I. Allegro maestoso” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0xc8e85b0a05b5d69fee9aa21ef8b42c8b537db0c9f1a040325800e1300f380770 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/CALC41800404.
Recording identifiers
- ISRC
- CALC41800404
- Title
- Piano Concerto No. 1 in E Minor, Op. 11: I. Allegro maestoso
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0xc8e85b0a05b5d69fee9aa21ef8b42c8b537db0c9f1a040325800e1300f380770
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-02T03:55:08+00:00
- Bitcoin block
- 956304
- Canonical record hash
sha256:8fe1be666cec5c3854b8f28d5b87b628b012026e416bd4320f3652d53b36c080- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CALC41800404
- Bitcoin block existence check
- https://blockstream.info/api/block/956304
Full record
Track page: Piano Concerto No. 1 in E Minor, Op. 11: I. Allegro maestoso · Machine-readable JSON-LD