ISRC CALC41800405
Verified recording
CALC41800405 is “Piano Concerto No. 1 in E Minor, Op. 11: II. Romance. Larghetto” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0x0c228b0ae0ff67fdcdd03a765e365643d79aa7b67438033a7cefaa82fec7d9a6 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/CALC41800405.
Recording identifiers
- ISRC
- CALC41800405
- Title
- Piano Concerto No. 1 in E Minor, Op. 11: II. Romance. Larghetto
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0x0c228b0ae0ff67fdcdd03a765e365643d79aa7b67438033a7cefaa82fec7d9a6
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-02T03:55:08+00:00
- Bitcoin block
- 956304
- Canonical record hash
sha256:02ad87a1c52b129d678aa70718ad18862a76d063d056fcd43e801d0016142ffe- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CALC41800405
- Bitcoin block existence check
- https://blockstream.info/api/block/956304
Full record
Track page: Piano Concerto No. 1 in E Minor, Op. 11: II. Romance. Larghetto · Machine-readable JSON-LD