ISRC NLA507820404
Verified recording
NLA507820404 is “Waltz No. 4 in F Major, Op. 34 No. 3” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0x576cb68d5210913feb85f00570f2cc6a6867ea67c76f265015e7b954a8f8175f and independently timestamped
in Bitcoin block 957118 on 2026-07-08.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507820404.
Recording identifiers
- ISRC
- NLA507820404
- Title
- Waltz No. 4 in F Major, Op. 34 No. 3
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0x576cb68d5210913feb85f00570f2cc6a6867ea67c76f265015e7b954a8f8175f
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:20:19+00:00
- Bitcoin block
- 957118
- Canonical record hash
sha256:d2d0160efb69753e7f917bb4c1fa99c8be6883a63e2a2bcdbef4d99b6ddf8c90- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507820404
- Bitcoin block existence check
- https://blockstream.info/api/block/957118
Full record
Track page: Waltz No. 4 in F Major, Op. 34 No. 3 · Machine-readable JSON-LD