ISRC US5UL1522968
Verified recording
US5UL1522968 is “Chopin. The Polonaise in A-Flat Major, Op. 53” by Alexey Kaleynikov,
registered on the CopyrightChains blockchain with CopyrightID
0xd8e6fc57df4a00b3d881a6ec535ac8c6efa21c8a801122c7bb8b2abe241be457 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/US5UL1522968.
Recording identifiers
- ISRC
- US5UL1522968
- Title
- Chopin. The Polonaise in A-Flat Major, Op. 53
- Artist
- Alexey Kaleynikov
- CopyrightID (CopyrightChains transaction hash)
0xd8e6fc57df4a00b3d881a6ec535ac8c6efa21c8a801122c7bb8b2abe241be457
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T17:29:52+00:00
- Bitcoin block
- 960441
- Canonical record hash
sha256:5036c99765a4e003c302b40fd3a93311f366002aa95bdb01d00b04ed7609573a- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US5UL1522968
- Bitcoin block existence check
- https://blockstream.info/api/block/960441
Full record
Track page: Chopin. The Polonaise in A-Flat Major, Op. 53 · Machine-readable JSON-LD