transactions

[lyndsysimon]

Define how transactions will be built and signed.

[lyndsysimon]

Note that this may include several objects. First pass at an architecture:

TransactionInput - a Key, plus an amount to send
TransactionOutput - a Key, plus an amount to receive
Transaction - a collection of inputs and outputs. Includes validation that inputs are equal to outputs and that the transaction is syntactically valid.

For complex transactions, a TransactionScriptNode abstract object would have a number of subclasses, each of which represented a single script operation to be included.