Are not commercial banks in position to open a 'Letter of Credit' to cover a domain name (which is certainly a virtual merchandise/asset) transaction? If they do then why can't a 'Letter of Credit' by a reputed bank be considered to finalize a domain sale deal? Many problems of payment security are solved in L/C because 'Terms & Conditions’ and their compliance are well described/defined here. Generally international export businesses are using this tool extensively. Only difference can be of 'material' and 'virtual' nature; and it may involve some more time & work.