ISRC CZUM71400287
Verified recording
CZUM71400287 is “Hoja hoj” by Karel Svoboda,
registered on the CopyrightChains blockchain with CopyrightID
0x1f833651b989f83449c215f8c2c2ff5a6077e412603052dd241dad531c621c82 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/CZUM71400287.
Recording identifiers
- ISRC
- CZUM71400287
- Title
- Hoja hoj
- Artist
- Karel Svoboda
- CopyrightID (CopyrightChains transaction hash)
0x1f833651b989f83449c215f8c2c2ff5a6077e412603052dd241dad531c621c82
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-06-13T13:32:09+00:00
- Bitcoin block
- 953520
- Canonical record hash
sha256:a000a979ef78d13c97b657b57e79fab03ccd73ba5797d45040fb6bf3ae122a8d- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM71400287
- Bitcoin block existence check
- https://blockstream.info/api/block/953520