ISRC DEF058101040
Verified recording
DEF058101040 is “Nocturne No. 4 in F Major, Op. 15 No. 1” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0x1b4647b9442bb60a138acfefa2b5967b5d9c1e2ebffb1ed9cda65150e91ff44e and independently timestamped
in Bitcoin block 960441 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF058101040.
Recording identifiers
- ISRC
- DEF058101040
- Title
- Nocturne No. 4 in F Major, Op. 15 No. 1
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0x1b4647b9442bb60a138acfefa2b5967b5d9c1e2ebffb1ed9cda65150e91ff44e
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T17:29:52+00:00
- Bitcoin block
- 960441
- Canonical record hash
sha256:b9f98e6e41aa46bb4c7f0c9fac22f94748bec4c138134d8d7bbcad017a55c884- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF058101040
- Bitcoin block existence check
- https://blockstream.info/api/block/960441
Full record
Track page: Nocturne No. 4 in F Major, Op. 15 No. 1 · Machine-readable JSON-LD