Say I am building a transaction in private: 1. Input 1 is signed with SIGHASH_NONE | SIGHASH_ANYONECANPAY 2. Input 2 is signed with SIGHASH_SINGLE ( | SIGHASH_ANYONECANPAY) SIGHASH_NONE implies that Input 1 will only spend if Input 2 is included in the transaction. Am I able to communicate this privately-signed transaction in such a way that Input 2 is also locked on the condition that Input 1 is included? For example, I send this partially-signed transaction, with both signatures, to a person I do not trust. Are they able to spend Input 2 (the SIGHASH_SINGLE) in another transaction without Input 1 included?