ISRC CZA232000632
Verified recording
CZA232000632 is “Tvrdohlavá” by Helena Vondráčková,
registered on the CopyrightChains blockchain with CopyrightID
0xb4a9e74b50013997d574c060867289a8884e3b0578c80137848cf8f2b7a04f51 and independently timestamped
in Bitcoin block 960455 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA232000632.
Recording identifiers
- ISRC
- CZA232000632
- Title
- Tvrdohlavá
- Artist
- Helena Vondráčková
- CopyrightID (CopyrightChains transaction hash)
0xb4a9e74b50013997d574c060867289a8884e3b0578c80137848cf8f2b7a04f51
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T19:53:13+00:00
- Bitcoin block
- 960455
- Canonical record hash
sha256:f5aa676c0770b88ef898caff0a669855da522743bade417c691ce4f8b9369873- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA232000632
- Bitcoin block existence check
- https://blockstream.info/api/block/960455