ISRC NLA507708511
Verified recording
NLA507708511 is “Mazurka No. 11 in E Minor, Op. 17 No. 2. Lento, ma non troppo” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0xb80d34585246e29ae87b1a762407d143c19a8a7c93a65e76ccec41eede9477c1 and independently timestamped
in Bitcoin block 956302 on 2026-07-02.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507708511.
Recording identifiers
- ISRC
- NLA507708511
- Title
- Mazurka No. 11 in E Minor, Op. 17 No. 2. Lento, ma non troppo
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0xb80d34585246e29ae87b1a762407d143c19a8a7c93a65e76ccec41eede9477c1
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-02T03:30:09+00:00
- Bitcoin block
- 956302
- Canonical record hash
sha256:77fb263f4c801529ae8138fa7c24a90d9ca47a2ba953f75993d5b8c3ae8566d2- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507708511
- Bitcoin block existence check
- https://blockstream.info/api/block/956302
Full record
Track page: Mazurka No. 11 in E Minor, Op. 17 No. 2. Lento, ma non troppo · Machine-readable JSON-LD