// verify BTC trading: 0 txfee on remember trades. even with invalid tx, thinks swap is completed RETSTR.({"result":null,"error":{"code":-26,"message":"66: insufficient priority"},"id":"jl777"}
// put Atxfee and Btxfee into rememberfiles
// coded fix: even with invalid tx, thinks swap is completed RETSTR.({"result":null,"error":{"code":-26,"message":"66: insufficient priority"},"id":"jl777"}