The invention discloses an
Internet of Things cross-domain
payment method with a
privacy protection function. The method comprises the steps of initialization, storage, uploading,
verification, cross-chain interaction, settlement and
timeout. According to the method, the validity of the content can be verified under the condition of not leaking any content by adopting the zero-knowledge proof technology, the specific position of group members, namely each site, can be hidden by adopting the
group signature technology, the position information of a user is hidden, and the position privacy of the user is protected; the anonymous block chain technology hides the transfer relationship between the real user and the corresponding
virtual user, so that the user
identity privacy is effectively protected; according to the cross-chain channel technology,
information transfer between sites on different block chains is realized, the cross-chain interaction efficiency is improved, and the cross-domain
payment requirements between different block chains in different industries are met; the intelligent contract, the zero-knowledge certification technology and the
group signature technology realize
privacy protection and realize distributed automatic
verification of information with relatively low chain cost, so that
verification efficiency is improved, and computing resources and cost are saved.