ISRC DEF059902540
Verified recording
DEF059902540 is “Mazurka in B-Flat Major, KK IIa/3” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0xf19e8d74663a7961d59935ac81a82e8c36c4a8efb27580b1506a822a641f0434 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/DEF059902540.
Recording identifiers
- ISRC
- DEF059902540
- Title
- Mazurka in B-Flat Major, KK IIa/3
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0xf19e8d74663a7961d59935ac81a82e8c36c4a8efb27580b1506a822a641f0434
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-02T03:55:08+00:00
- Bitcoin block
- 956304
- Canonical record hash
sha256:68531ea89ff6c6ff83f2c59457dda0c87d035b552e981de1ff22a53ddb818dc9- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059902540
- Bitcoin block existence check
- https://blockstream.info/api/block/956304
Full record
Track page: Mazurka in B-Flat Major, KK IIa/3 · Machine-readable JSON-LD