New helper function to check if an unconfirmed transaction with specific parameters exists.
New helper function to check if an unconfirmed transaction with specific parameters exists.

Ziftr/nxt,Ziftr/nxt,fimkrypto/nxt,metrospark/czarcraft,metrospark/czarcraft,fimkrypto/nxt,fimkrypto/nxt,fimkrypto/nxt,Ziftr/nxt,metrospark/czarcraft