ISRC DEF057409708
Verified recording
DEF057409708 is “Piano Sonata No. 2 in B-Flat Minor, Op. 35: III. Marche funèbre - Pt. 8” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0xa4b24402d3bf5625e8eedb57eded906017da54008a74e163709fb817f9115315 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/DEF057409708.
Recording identifiers
- ISRC
- DEF057409708
- Title
- Piano Sonata No. 2 in B-Flat Minor, Op. 35: III. Marche funèbre - Pt. 8
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0xa4b24402d3bf5625e8eedb57eded906017da54008a74e163709fb817f9115315
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:20:19+00:00
- Bitcoin block
- 957118
- Canonical record hash
sha256:7daff44183b788e7e209c9db05a219b30a2eb632514683927abb768ce713de4e- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057409708
- 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. 8 · Machine-readable JSON-LD