ISRC NLA507708504
Verified recording
NLA507708504 is “Mazurka No. 4 in E-Flat Minor, Op. 6 No. 4. Presto ma non troppo” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0x30c958cfd2f4974048c1c162e9471e24aec46f1837f8de09ae02904e7671cfa3 and independently timestamped
in Bitcoin block 956304 on 2026-07-02.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507708504.
Recording identifiers
- ISRC
- NLA507708504
- Title
- Mazurka No. 4 in E-Flat Minor, Op. 6 No. 4. Presto ma non troppo
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0x30c958cfd2f4974048c1c162e9471e24aec46f1837f8de09ae02904e7671cfa3
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-02T03:55:08+00:00
- Bitcoin block
- 956304
- Canonical record hash
sha256:18e75ac28747ff439066b819b22b48e6e3bd47dcae80a928b814e0b142b3b499- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507708504
- Bitcoin block existence check
- https://blockstream.info/api/block/956304
Full record
Track page: Mazurka No. 4 in E-Flat Minor, Op. 6 No. 4. Presto ma non troppo · Machine-readable JSON-LD