This thesis entitled Legal verification on buying and selling agreement through
electronic transaction. The problem which is being raised is whether conventional buying and
selling agreement can be used as measuring rod for electronic transaction and how the legal
verification on buying and selling agreement through electronic transaction, therefore, this
legal study aims to find out whether conventional buying and selling agreement can be used
as measuring rod for electronic transaction and to find out legal verification on buying and
selling agreement through electronic transaction. The result of this study is expected to give
mind input on science especially in the field of buying and selling contract through electronic
transaction. The type of this study is normative legal study. The result of this study is that
conventional buying and selling agreement can be used as measuring rod of electronic buying
and selling agreement, since the agreement through electronic transaction is the extent of
conventional buying and selling agreement. However, if the buying and selling agreement
through electronic transaction is carried out trans-nationally, lex informatica using The
Theory of International Space will be valid. Legal verification on buying and selling
agreement through electronic transaction is based on regulation of Undang-Undang nomor 11
tahun 2008 on electronic information and transaction. HIR regulates on general about
regulation of valid evidence devices on civil procedure, while Undang-Undang nomor 11
tahun 2008 on electronic information and transaction regulates more extent issue related to
anything that can be clarified as valid evidence devise on carrying out electronic transaction.