ISRC USBC19803050
Verified recording
USBC19803050 is “Mazurkas, Op. 68: No. 4 in F Minor” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0x2d1e78ac70c310658a8e73728fd132694cc9ed7dd9342193fa3d7dd869675767 and independently timestamped
in Bitcoin block 960311 on 2026-07-30.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBC19803050.
Recording identifiers
- ISRC
- USBC19803050
- Title
- Mazurkas, Op. 68: No. 4 in F Minor
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0x2d1e78ac70c310658a8e73728fd132694cc9ed7dd9342193fa3d7dd869675767
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-30T20:45:02+00:00
- Bitcoin block
- 960311
- Canonical record hash
sha256:120e29e77943328f0ab5ab122d0dcb06099625aa99dd1a108fb81f512b44600e- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBC19803050
- Bitcoin block existence check
- https://blockstream.info/api/block/960311
Full record
Track page: Mazurkas, Op. 68: No. 4 in F Minor · Machine-readable JSON-LD