Incorporate pubkey in signature, check based on address
Incorporate pubkey in signature, check based on address

Include the public key in the signature string, to allow verification
based on address.

cinnamoncoin/groupcoin-1,FrictionlessCoin/iXcoin,cinnamoncoin/groupcoin-1,FrictionlessCoin/iXcoin,coinkeeper/2015-06-22_18-41_ixcoin,coinkeeper/2015-06-22_18-41_ixcoin,FrictionlessCoin/iXcoin,coinkeeper/2015-06-22_18-41_ixcoin,cinnamoncoin/groupcoin-1,cinnamoncoin/groupcoin-1,coinkeeper/2015-06-22_18-41_ixcoin,FrictionlessCoin/iXcoin,cinnamoncoin/groupcoin-1,cinnamoncoin/groupcoin-1,coinkeeper/2015-06-22_18-41_ixcoin,FrictionlessCoin/iXcoin