ISRC DEF057409707
Verified recording
DEF057409707 is “Piano Sonata No. 2 in B-Flat Minor, Op. 35: III. Marche funèbre - Pt. 7” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0xec1e99f137c9b9721430883d7395966b14f940e9977103fe49fdec89b51d338b 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/DEF057409707.
Recording identifiers
- ISRC
- DEF057409707
- Title
- Piano Sonata No. 2 in B-Flat Minor, Op. 35: III. Marche funèbre - Pt. 7
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0xec1e99f137c9b9721430883d7395966b14f940e9977103fe49fdec89b51d338b
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:20:19+00:00
- Bitcoin block
- 957118
- Canonical record hash
sha256:846a8458955f239a70135fe07896c2ed7742e974c154c9926fbb474c04f76a66- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057409707
- 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 - Pt. 7 · Machine-readable JSON-LD