ISRC CALC41800402
Verified recording
CALC41800402 is “Piano Concerto No. 2 in F Minor, Op. 21: II. Larghetto” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0xf6e61be8aad054d4e1b9ce89ebe7ea307126373870c0d65d76be55098a0eb160 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/CALC41800402.
Recording identifiers
- ISRC
- CALC41800402
- Title
- Piano Concerto No. 2 in F Minor, Op. 21: II. Larghetto
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0xf6e61be8aad054d4e1b9ce89ebe7ea307126373870c0d65d76be55098a0eb160
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-02T03:55:08+00:00
- Bitcoin block
- 956304
- Canonical record hash
sha256:fc47e84101f9b254fb4e51d9bace7a625144fe9d632de5bd5d3c1985a2f2f08a- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CALC41800402
- Bitcoin block existence check
- https://blockstream.info/api/block/956304
Full record
Track page: Piano Concerto No. 2 in F Minor, Op. 21: II. Larghetto · Machine-readable JSON-LD