ISRC CZA166200031
Verified recording
CZA166200031 is “Kočka Na Okně” by Waldemar Matuška,
registered on the CopyrightChains blockchain with CopyrightID
0x04a865f19aa7ee0aeccdd3e8ad8cc9907dddf20adf2872a4ae9348b84f226d65 and independently timestamped
in Bitcoin block 953536 on 2026-06-13.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA166200031.
Recording identifiers
- ISRC
- CZA166200031
- Title
- Kočka Na Okně
- Artist
- Waldemar Matuška
- CopyrightID (CopyrightChains transaction hash)
0x04a865f19aa7ee0aeccdd3e8ad8cc9907dddf20adf2872a4ae9348b84f226d65
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-06-13T17:25:41+00:00
- Bitcoin block
- 953536
- Canonical record hash
sha256:4ac33491561a37843cb5d844e5433046b8fe7b66891ceb4ea56ffb5b351ec82b- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA166200031
- Bitcoin block existence check
- https://blockstream.info/api/block/953536