ISRC CZI531600021
Verified recording
CZI531600021 is “Jen Si Zpívej” by Vojtěch Drahokoupil,
registered on the CopyrightChains blockchain with CopyrightID
0x3f3dadbb7d01ff4689674ff81c2a401534524a47813e8c4ef67f94587185bc99 and independently timestamped
in Bitcoin block 960254 on 2026-07-30.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZI531600021.
Recording identifiers
- ISRC
- CZI531600021
- Title
- Jen Si Zpívej
- Artist
- Vojtěch Drahokoupil
- CopyrightID (CopyrightChains transaction hash)
0x3f3dadbb7d01ff4689674ff81c2a401534524a47813e8c4ef67f94587185bc99
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-30T12:06:10+00:00
- Bitcoin block
- 960254
- Canonical record hash
sha256:08ee45840fe20ccd8b18c4e22ae5adcef8265472e5b9602ef9dab323e7abf4a1- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZI531600021
- Bitcoin block existence check
- https://blockstream.info/api/block/960254