ISRC DEF057900694
Verified recording
DEF057900694 is “Polonaise No. 3 in A, Op. 40 No. 1 "Military": Allegro con brio - Pt. 4” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0xb094f7430c4e9e4e27fa203ef5b29c2a2ddce666720d7e541b180635a429efa1 and independently timestamped
in Bitcoin block 960473 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057900694.
Recording identifiers
- ISRC
- DEF057900694
- Title
- Polonaise No. 3 in A, Op. 40 No. 1 "Military": Allegro con brio - Pt. 4
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0xb094f7430c4e9e4e27fa203ef5b29c2a2ddce666720d7e541b180635a429efa1
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T22:27:44+00:00
- Bitcoin block
- 960473
- Canonical record hash
sha256:ae266437d74344bf9819dd66d47a9a405daff17fa19c4031b5895b11637f0d4e- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057900694
- Bitcoin block existence check
- https://blockstream.info/api/block/960473
Full record
Track page: Polonaise No. 3 in A, Op. 40 No. 1 "Military": Allegro con brio - Pt. 4 · Machine-readable JSON-LD