ISRC CALC41800401
Verified recording
CALC41800401 is “Piano Concerto No. 2 in F Minor, Op. 21: I. Maestoso” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0x69177e0cfbc0d9d2d0f6ca590b849771e1bb687ae0924981c3795f5d5c9ee2e7 and independently timestamped
in Bitcoin block 957055 on 2026-07-07.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CALC41800401.
Recording identifiers
- ISRC
- CALC41800401
- Title
- Piano Concerto No. 2 in F Minor, Op. 21: I. Maestoso
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0x69177e0cfbc0d9d2d0f6ca590b849771e1bb687ae0924981c3795f5d5c9ee2e7
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-07T15:12:44+00:00
- Bitcoin block
- 957055
- Canonical record hash
sha256:5c59caa6fbe67228f5b69aabb0ee1a82dfe1269217c4fdb7ce9fbd4f8e8be29e- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CALC41800401
- Bitcoin block existence check
- https://blockstream.info/api/block/957055
Full record
Track page: Piano Concerto No. 2 in F Minor, Op. 21: I. Maestoso · Machine-readable JSON-LD