ISRC DEF059503570
Verified recording
DEF059503570 is “Nocturne No. 4 in F Major, Op. 15, No. 1” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0x7950f833279e5d99a274cd6ea25f97e2642de4c567232f88ea044cbcd73a1b70 and independently timestamped
in Bitcoin block 960427 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059503570.
Recording identifiers
- ISRC
- DEF059503570
- Title
- Nocturne No. 4 in F Major, Op. 15, No. 1
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0x7950f833279e5d99a274cd6ea25f97e2642de4c567232f88ea044cbcd73a1b70
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T15:59:18+00:00
- Bitcoin block
- 960427
- Canonical record hash
sha256:84d934ce107fa7ef380dd4eb1319c96ff7dfcfa0dad06f184f552231dec1d7b1- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059503570
- Bitcoin block existence check
- https://blockstream.info/api/block/960427
Full record
Track page: Nocturne No. 4 in F Major, Op. 15, No. 1 · Machine-readable JSON-LD