ISRC CZUM71100325
Verified recording
CZUM71100325 is “Lena” by Jan Nedved,
registered on the CopyrightChains blockchain with CopyrightID
0x535c3796b1dae56f86c8d0a2db3f0062060abf8ce577ac166ff9f7f8d7fed5c5 and independently timestamped
in Bitcoin block 953520 on 2026-06-13.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM71100325.
Recording identifiers
- ISRC
- CZUM71100325
- Title
- Lena
- Artist
- Jan Nedved
- CopyrightID (CopyrightChains transaction hash)
0x535c3796b1dae56f86c8d0a2db3f0062060abf8ce577ac166ff9f7f8d7fed5c5
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-06-13T13:32:09+00:00
- Bitcoin block
- 953520
- Canonical record hash
sha256:74d319ae3b4a5ee54f7433e30ffbff2232e6b82bd1a63e928090165e319ff670- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM71100325
- Bitcoin block existence check
- https://blockstream.info/api/block/953520