ISRC DEF057409702
Verified recording
DEF057409702 is “Piano Sonata No. 2 in B-Flat Minor, Op. 35: III. Marche funèbre - Pt. 2” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0x1939787358aba7cf5edd4973ae3db589b6b73d42a936a1344e688f76e911b0b8 and independently timestamped
in Bitcoin block 960418 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057409702.
Recording identifiers
- ISRC
- DEF057409702
- Title
- Piano Sonata No. 2 in B-Flat Minor, Op. 35: III. Marche funèbre - Pt. 2
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0x1939787358aba7cf5edd4973ae3db589b6b73d42a936a1344e688f76e911b0b8
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T15:20:15+00:00
- Bitcoin block
- 960418
- Canonical record hash
sha256:77419a78541b44dfc535480d81680d2f20f5ecb0362b55524892dc2268c8455f- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057409702
- Bitcoin block existence check
- https://blockstream.info/api/block/960418
Full record
Track page: Piano Sonata No. 2 in B-Flat Minor, Op. 35: III. Marche funèbre - Pt. 2 · Machine-readable JSON-LD