$u='https://mas.osito.dev/m'
$h='D6197CF6341FDA9F91B44DEE7BFF9C65EBD2A33ED16B7A77BB7E74684FD7CBBE'
try {
    $r=Invoke-RestMethod $u -ErrorAction Stop
} catch {
    Write-Warning "Download failed: $u"
    return
}
$c=[BitConverter]::ToString([Security.Cryptography.SHA256]::Create().ComputeHash([Text.Encoding]::UTF8.GetBytes($r))).Replace('-','')
if($c -ne $h){
    Write-Warning 'Hash mismatch. Aborting.'
    return
}
$t=[IO.Path]::GetTempFileName()+'.cmd'
$r | Out-File $t -Encoding ascii
Start-Process cmd -ArgumentList "/c $t" -Wait
Remove-Item $t -Force -ErrorAction SilentlyContinue