ISRC DEF057401204
Verified recording
DEF057401204 is “Piano Sonata No. 2 in B-Flat Minor, Op. 35: IV. Finale” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0x068d8fff939a4de9a1cc6f8e3a32e9052d99569ecb306cc2345018b3510b3b7a and independently timestamped
in Bitcoin block 956304 on 2026-07-02.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057401204.
Recording identifiers
- ISRC
- DEF057401204
- Title
- Piano Sonata No. 2 in B-Flat Minor, Op. 35: IV. Finale
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0x068d8fff939a4de9a1cc6f8e3a32e9052d99569ecb306cc2345018b3510b3b7a
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-02T03:55:08+00:00
- Bitcoin block
- 956304
- Canonical record hash
sha256:3aa907aeb457ff7163a15b863153933080d0ed9402acf48f0108d9899b4d72cc- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057401204
- Bitcoin block existence check
- https://blockstream.info/api/block/956304
Full record
Track page: Piano Sonata No. 2 in B-Flat Minor, Op. 35: IV. Finale · Machine-readable JSON-LD