ISRC NLA507928605
Verified recording
NLA507928605 is “Impromptu No. 4 in C-Sharp Minor, Op. 66 "Fantaisie-Impromptu"” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0x5b8b6c4b8b1d297561f63c0d733627904a578e05aedd4532bf0340c99f08a07c and independently timestamped
in Bitcoin block 960327 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507928605.
Recording identifiers
- ISRC
- NLA507928605
- Title
- Impromptu No. 4 in C-Sharp Minor, Op. 66 "Fantaisie-Impromptu"
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0x5b8b6c4b8b1d297561f63c0d733627904a578e05aedd4532bf0340c99f08a07c
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T00:26:26+00:00
- Bitcoin block
- 960327
- Canonical record hash
sha256:b6743e18df405446ba9cd77eac223c366254d5700f6b882c3fc12cd4655b1189- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507928605
- Bitcoin block existence check
- https://blockstream.info/api/block/960327
Full record
Track page: Impromptu No. 4 in C-Sharp Minor, Op. 66 "Fantaisie-Impromptu" · Machine-readable JSON-LD