ISRC DEF059403410
Verified recording
DEF059403410 is “Impromptu No. 4 In C Sharp Minor, Op. 66 "Fantaisie-Impromptu": Allegro agitato” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0x193abd12c446db5d5023d92a5a4aa36dbb39d9d9e21004e184d30952b20f4abd 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/DEF059403410.
Recording identifiers
- ISRC
- DEF059403410
- Title
- Impromptu No. 4 In C Sharp Minor, Op. 66 "Fantaisie-Impromptu": Allegro agitato
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0x193abd12c446db5d5023d92a5a4aa36dbb39d9d9e21004e184d30952b20f4abd
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-02T03:55:08+00:00
- Bitcoin block
- 956304
- Canonical record hash
sha256:5efdf710a95175c2210d577edd59c27c1398a8b0dad47f70fc70e13c6b5f7da1- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059403410
- Bitcoin block existence check
- https://blockstream.info/api/block/956304
Full record
Track page: Impromptu No. 4 In C Sharp Minor, Op. 66 "Fantaisie-Impromptu": Allegro agitato · Machine-readable JSON-LD