ISRC NLA507401112
Verified recording
NLA507401112 is “Nocturne No. 4 in F, Op. 15 No. 1” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0xd16a9e9ceee8fb2128d92feaa252bfb5a6b38894570a54c50a3f3df1684e32b7 and independently timestamped
in Bitcoin block 957122 on 2026-07-08.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507401112.
Recording identifiers
- ISRC
- NLA507401112
- Title
- Nocturne No. 4 in F, Op. 15 No. 1
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0xd16a9e9ceee8fb2128d92feaa252bfb5a6b38894570a54c50a3f3df1684e32b7
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:39:04+00:00
- Bitcoin block
- 957122
- Canonical record hash
sha256:ce63a2b7a70dc097291fe48e1de50789e0810e050f8fe49027d9e4b0a6ee32b0- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507401112
- Bitcoin block existence check
- https://blockstream.info/api/block/957122
Full record
Track page: Nocturne No. 4 in F, Op. 15 No. 1 · Machine-readable JSON-LD