TWISTER is a decentralized encrypted credential system (Twister CASH SYSTEM). This system utilizes Merkel chain technology to construct an on chain asset trading concealment system. Users can transfer digital assets to the decentralized encryption voucher protocol and generate encryption vouchers, which can be used to transfer assets to any address.TWS develops contracts on the wave field chain without the need to trust third-party institutions, which can ensure the security of users' digital assets and privacy. The encryption certificate is an "indefinite anonymous electronic certificate". It adopts "non interactive zero-knowledge proof" (zk SNARK) and mixed data structure, which can guarantee the anonymity of the promissory note holder, the privacy of the message transmission and data structure at the same time. Even using big data tracking can not trace the user's transactions....