ISRC DEF059902580
Verified recording
DEF059902580 is “Mazurka in B-Flat Major, KK IVb/1 "Wołowska". Allegretto” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0x4162046f34c75f20a3ea1af0fa773640c4a4be49c84d78e0422011f509346f09 and independently timestamped
in Bitcoin block 956302 on 2026-07-02.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059902580.
Recording identifiers
- ISRC
- DEF059902580
- Title
- Mazurka in B-Flat Major, KK IVb/1 "Wołowska". Allegretto
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0x4162046f34c75f20a3ea1af0fa773640c4a4be49c84d78e0422011f509346f09
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-02T03:30:09+00:00
- Bitcoin block
- 956302
- Canonical record hash
sha256:2e94dec24677e089f3bebf32ecebcce7f3ed513f5efa22b5dbf32c142e261268- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059902580
- Bitcoin block existence check
- https://blockstream.info/api/block/956302
Full record
Track page: Mazurka in B-Flat Major, KK IVb/1 "Wołowska". Allegretto · Machine-readable JSON-LD