ISRC DEF059103043

Verified recording

DEF059103043 is “Piano Sonata No. 2 in B-Flat Minor, Op. 35: III. Marche funèbre (Lento)” by Frédéric Chopin, registered on the CopyrightChains blockchain with CopyrightID 0x0e96d47e859ed1b42da3462b641a7074fa6c387071fa8ab9ff4c73f28f562010 and independently timestamped in Bitcoin block 957118 on 2026-07-08. Verify the canonical record, hash, and Bitcoin attestation at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059103043.

Recording identifiers

ISRC
DEF059103043
Title
Piano Sonata No. 2 in B-Flat Minor, Op. 35: III. Marche funèbre (Lento)
Artist
Frédéric Chopin
CopyrightID (CopyrightChains transaction hash)
0x0e96d47e859ed1b42da3462b641a7074fa6c387071fa8ab9ff4c73f28f562010

Dual-chain proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19+00:00
Bitcoin block
957118
Canonical record hash
sha256:83bc76f681a4ad4635cf9eb4c0932f1e9222d5f202e204b52e58d6c303576af8
Verification API (6-check server-side result)
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059103043
Bitcoin block existence check
https://blockstream.info/api/block/957118

Full record

Track page: Piano Sonata No. 2 in B-Flat Minor, Op. 35: III. Marche funèbre (Lento) · Machine-readable JSON-LD