TrustAsia provides a remote code signing certificate with advanced verification (OV) and extended verification (EV) options, and is compatible with the Windows Hardware Quality Laboratory (WHQL) process. For developers and software vendors of Windows applications, TrustAsia's code signing certificates can significantly reduce application error messages and significantly increase the trustworthiness of the software. Software vendors and independent developers can use this certificate to digitally sign and time stamp software distributed over the Internet. This digital signature assures users that the software is legal, originates from well-known software vendors, and that the program code has not been tampered with since the date of publication, thus ensuring the integrity of the software and the reliability of the source.