Download the SHA-256 checksum file and compare it with the checksum generated from your ISO after download.
-
Linux:
sha256sum tavashtrOS_beta_live-image-x86-64.iso -
Windows:
CertUtil -hashfile tavashtrOS_beta_live-image-x86-64.iso SHA256 -
macOS:
shasum -a 256 tavashtrOS_beta_live-image-x86-64.iso
Compare the generated SHA-256 value with the checksum file. If both match exactly, your ISO download is intact.