ISRC ITUM71700538
Verified recording
ITUM71700538 is “Nocturne in C Sharp Minor Op. Posth.” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0x51419c5c3cb7dccc959f848ab45ebbbdfd5e4c9016d6b4608dae279d66e39fc8 and independently timestamped
in Bitcoin block 960494 on 2026-08-01.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITUM71700538.
Recording identifiers
- ISRC
- ITUM71700538
- Title
- Nocturne in C Sharp Minor Op. Posth.
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0x51419c5c3cb7dccc959f848ab45ebbbdfd5e4c9016d6b4608dae279d66e39fc8
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-08-01T01:44:32+00:00
- Bitcoin block
- 960494
- Canonical record hash
sha256:db1e12c1089e570f69633f431786fbe69555f8cb0a745020d808cf8b907f4c0a- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITUM71700538
- Bitcoin block existence check
- https://blockstream.info/api/block/960494
Full record
Track page: Nocturne in C Sharp Minor Op. Posth. · Machine-readable JSON-LD