ISRC USBC19300505
Verified recording
USBC19300505 is “Mazurka No. 4 in F Minor, Op. 68” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0x6bdfa9de37e4902cb38af55e2cdd54fe88964199dc15dd8118a362948eacf4fe and independently timestamped
in Bitcoin block 956889 on 2026-07-06.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBC19300505.
Recording identifiers
- ISRC
- USBC19300505
- Title
- Mazurka No. 4 in F Minor, Op. 68
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0x6bdfa9de37e4902cb38af55e2cdd54fe88964199dc15dd8118a362948eacf4fe
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-06T06:56:49+00:00
- Bitcoin block
- 956889
- Canonical record hash
sha256:54902928590bc37e7db70b93c52ae5994b860a00ddef1186816350a13719a770- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBC19300505
- Bitcoin block existence check
- https://blockstream.info/api/block/956889
Full record
Track page: Mazurka No. 4 in F Minor, Op. 68 · Machine-readable JSON-LD