ISRC USKO11401114
Verified recording
USKO11401114 is “Chopin: Nocturne in E-flat, Op. 9, No.2” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0x1780e6a3a2821bf5ff462b0fdd2ea6e726bc35b12883e99f223ff88b814c8b3c and independently timestamped
in Bitcoin block 960429 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USKO11401114.
Recording identifiers
- ISRC
- USKO11401114
- Title
- Chopin: Nocturne in E-flat, Op. 9, No.2
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0x1780e6a3a2821bf5ff462b0fdd2ea6e726bc35b12883e99f223ff88b814c8b3c
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T16:07:24+00:00
- Bitcoin block
- 960429
- Canonical record hash
sha256:f072c1051c3e9602f387d643b0d5b20760e3b60a286fc0ff034cc1394bb3ba6a- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USKO11401114
- Bitcoin block existence check
- https://blockstream.info/api/block/960429
Full record
Track page: Chopin: Nocturne in E-flat, Op. 9, No.2 · Machine-readable JSON-LD