Finalize Transaction
Revision as of 11:09, 4 November 2014 by Justusranvier (talk | contribs)
Initial Conditions
- An unfinished transaction is ready for processing.
- The transaction may or may not have have an output
- The transaction is valid
- Not too big
- Inputs are sufficient to cover outputs and required fees
- A change output does not yet exist in the transaction
- A change output may be added without causing the transaction to exceed size limits
Sequence
- If the transaction contains no outputs and no inputs, then it may be discarded.
- The change amount is calculated by: Σ(txin) - ( Σ(txout) + fees )
- If the change amount is greater than zero:
- Add a change output of the appropriate value
- Increment the
nextchangestart
object in the withdrawal status list
- If the change amount is greater than zero:
- Calculate an ntxid for the transaction for tracking purposes.
- Loop through every (non-change) output in the transaction and update the withdrawal status object for the corresponding output.
- The withdrawal status object contain an entry for every output in the transaction, where each entry has an
outpoints
object containing a nilntxid
, anindex
matching the output position index, and a matchingamount
. - Update the
ntxid
value from nil to the ntxid for the transaction.
- The withdrawal status object contain an entry for every output in the transaction, where each entry has an
- Add the fees from this transaction to the
fees
property of the withdrawal status object. - Move the transaction to the finished transaction list.