ISRC UK2Y21801593
Verified recording
UK2Y21801593 is “Eugene Onegin, Op. 24, Act III Scene 1: No. 19, Polonaise” by Boris Khaikin,
registered on the CopyrightChains blockchain with CopyrightID
0xf9eb9cbe6c1095d61ebedbc995fc5b3cc3557b3ae6aaff9a36808050ec48b72e and independently timestamped
in Bitcoin block 957120 on 2026-07-08.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK2Y21801593.
Recording identifiers
- ISRC
- UK2Y21801593
- Title
- Eugene Onegin, Op. 24, Act III Scene 1: No. 19, Polonaise
- Artist
- Boris Khaikin
- CopyrightID (CopyrightChains transaction hash)
0xf9eb9cbe6c1095d61ebedbc995fc5b3cc3557b3ae6aaff9a36808050ec48b72e
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:22:41+00:00
- Bitcoin block
- 957120
- Canonical record hash
sha256:a31ec6f02826ed4ea40f5b2de83d5d6134a106319919184016156cafab25dcbe- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK2Y21801593
- Bitcoin block existence check
- https://blockstream.info/api/block/957120
Full record
Track page: Eugene Onegin, Op. 24, Act III Scene 1: No. 19, Polonaise · Machine-readable JSON-LD