ISRC USBC19300509
Verified recording
USBC19300509 is “Mazurka No. 4 in B-Flat Minor, Op. 24” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0x312a89ce1e2faba65b837a71d3179a705a617ea86f76f28bec22bb16ce95c953 and independently timestamped
in Bitcoin block 959159 on 2026-07-22.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBC19300509.
Recording identifiers
- ISRC
- USBC19300509
- Title
- Mazurka No. 4 in B-Flat Minor, Op. 24
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0x312a89ce1e2faba65b837a71d3179a705a617ea86f76f28bec22bb16ce95c953
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-22T17:48:40+00:00
- Bitcoin block
- 959159
- Canonical record hash
sha256:c1302b33ef59f65486b91b19661f524bf086e39a03589f29988f5f67846d3065- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBC19300509
- Bitcoin block existence check
- https://blockstream.info/api/block/959159
Full record
Track page: Mazurka No. 4 in B-Flat Minor, Op. 24 · Machine-readable JSON-LD