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