ISRC CZA166500272
Verified recording
CZA166500272 is “Nej, Nej, Nej...” by Josef Zíma,
registered on the CopyrightChains blockchain with CopyrightID
0xfc85afd89e7a4282ad176b8d74e5e79b10071b49b240ba08f92ef7091bd49e4c and independently timestamped
in Bitcoin block 960448 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA166500272.
Recording identifiers
- ISRC
- CZA166500272
- Title
- Nej, Nej, Nej...
- Artist
- Josef Zíma
- CopyrightID (CopyrightChains transaction hash)
0xfc85afd89e7a4282ad176b8d74e5e79b10071b49b240ba08f92ef7091bd49e4c
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T18:48:12+00:00
- Bitcoin block
- 960448
- Canonical record hash
sha256:d23bc8a76567de09b226ea62d1ff1d46eaf2890a3c0a1a913c4bc3a5d4f18959- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA166500272
- Bitcoin block existence check
- https://blockstream.info/api/block/960448