ISRC DEF058100023
Verified recording
DEF058100023 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
0x76bf84bdc7b85edcd0ab7e4b10858003f1174f9267688a5ff3cf4bc7fa19eeec 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/DEF058100023.
Recording identifiers
- ISRC
- DEF058100023
- Title
- Piano Sonata No. 2 in B-Flat Minor, Op. 35: III. Marche funèbre. Lento
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0x76bf84bdc7b85edcd0ab7e4b10858003f1174f9267688a5ff3cf4bc7fa19eeec
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-02T03:55:08+00:00
- Bitcoin block
- 956304
- Canonical record hash
sha256:da5532b5dab2a2262a350588aae35a7457410ec1607f49c3bb91463adc3576c1- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF058100023
- Bitcoin block existence check
- https://blockstream.info/api/block/956304
Full record
Track page: Piano Sonata No. 2 in B-Flat Minor, Op. 35: III. Marche funèbre. Lento · Machine-readable JSON-LD