ISRC DEF059103182
Verified recording
DEF059103182 is “Mazurka No. 40 in F minor Op. 63 No. 2” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0x44283874428de7799a9b6d63479492fe3021a95c20535c70f238f9558cab1b99 and independently timestamped
in Bitcoin block 956375 on 2026-07-02.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059103182.
Recording identifiers
- ISRC
- DEF059103182
- Title
- Mazurka No. 40 in F minor Op. 63 No. 2
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0x44283874428de7799a9b6d63479492fe3021a95c20535c70f238f9558cab1b99
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-02T16:51:38+00:00
- Bitcoin block
- 956375
- Canonical record hash
sha256:8b45176f0ce84ce8294edfcbd2d8593a7574c162c15af089506f198529c77b40- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059103182
- Bitcoin block existence check
- https://blockstream.info/api/block/956375
Full record
Track page: Mazurka No. 40 in F minor Op. 63 No. 2 · Machine-readable JSON-LD