zec
/
zips
mirror of https://github.com/zcash/zips.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

Improvements to Requirements language from review 

Co-authored-by: Daira-Emma Hopwood <daira@jacaranda.org>
This commit is contained in:
Jack Grigg 2024-07-16 02:37:31 +01:00
parent beeaa53342
commit 0d33eee0a2
1 changed files with 21 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

31
zip-0315.rst
View File

@ -38,6 +38,12 @@ Transaction output (TXO)
An output (transparent coin or shielded note) of a transaction on the consensus
block chain or in the mempool visible to a wallet.
TODO: Add informal definitions of:
* known-spendable and confirmed-spendable TXOs;
* trusted and untrusted TXOs.
These should forward-reference the specification section with the formal definitions.
Motivation
==========
@ -88,24 +94,29 @@ share some of their keys.
Prompt accessibility of funds
-----------------------------
Wallets need to take account of two concerns:
Wallets need to take account of two main concerns with respect to
accessibility of funds:
* enabling funds to be spent as quickly as possible to reduce latency;
* waiting long enough before spending TXOs to ensure that the
confirmed-spendable balance is not overestimated, and so can be trusted
by the user.
* ensuring that the confirmed-spendable balance is not overestimated,
and so can be trusted by the user.
These concerns affect the way that balances should be computed, which
notes are selected for spending, and how the wallet should ensure that
sufficient notes are available to cover multiple spends within a short
period.
To support this we define two kinds of TXOs:
* A trusted TXO is a TXO received from a party where the wallet trusts a
double-spend not to occur, e.g. TXOs created by the wallet's internal TXO
handling.
* A trusted TXO is a TXO received from a party where the wallet trusts that
it will remain mined in its original transaction, such as TXOs created by
the wallet's internal TXO handling.
* An untrusted TXO is a TXO received by the wallet that is not trusted.
Wallets can then require that untrusted TXOs need more confirmations before
they become spendable than trusted TXOs. This provides an improved trade-off
between latency on the one hand, and reliability and safety on the other.
they become confirmed-spendable than trusted TXOs. This provides an improved
trade-off between latency on the one hand, and reliability and safety on the
other.
Specification