Difference between revisions of "Finalize Transaction"
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(→Initial Conditions) |
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*** Inputs are sufficient to cover outputs and required fees | *** Inputs are sufficient to cover outputs and required fees | ||
** A change output does not yet exist in the transaction | ** A change output does not yet exist in the transaction | ||
− | *** A change output may be added without causing the transaction to exceed size limits | + | *** A change output may be added without causing the transaction to exceed size limits OR no change will be required (as in the case of a split output) |
==Sequence== | ==Sequence== |
Latest revision as of 11:14, 4 November 2014
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 OR no change will be required (as in the case of a split output)
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.