mirror of
https://github.com/monero-project/monero-site.git
synced 2024-12-29 15:09:28 +00:00
58 lines
2.6 KiB
Markdown
58 lines
2.6 KiB
Markdown
---
|
|
summary: 'a special transaction where the recipient(s) can only spend the funds after a future date, as set by the sender'
|
|
terms: ["unlock-time"]
|
|
---
|
|
|
|
{% include disclaimer.html translated="yes" translationOutdated="no" %}
|
|
|
|
### 基础知识
|
|
|
|
A special transaction where the recipient(s) can only spend the funds after
|
|
a future date, as set by the sender.
|
|
|
|
Unlock time allows you to send a transaction to someone, such that they can
|
|
not spend it until after a certain block height, or until a certain
|
|
time. These locks are per transaction, not per output. This means any
|
|
returning change will be locked too. ***Do not unintentionally lock your
|
|
change outputs.***
|
|
|
|
注意，这与比特币的 [nLockTime](https://en.bitcoin.it/wiki/NLockTime)
|
|
不同，在比特币的网络当中，交易直到给定的时间才有效。
|
|
|
|
Using `unlock_time` has privacy consequences for the user(s) (and the wider
|
|
Monero network if it is flooded with these). The value is public on the
|
|
blockchain, so be aware of potential clustering. The feature is rarely used
|
|
and may be removed in a future Monero release, so the Monero developers
|
|
advise against building critical infrastructure that depends on this
|
|
feature.
|
|
|
|
Decoy outputs may be selected from these locked outputs, thus identifying
|
|
them as provable decoy outputs. At the moment, this has little impact on
|
|
wider network privacy since this unlock time feature is so rarely used.
|
|
|
|
Further, true spends after a reasonably long lock time (more than several
|
|
days) may be heuristically identified as the true spend, since there will be
|
|
fewer other transactions using those outputs as decoys around that time
|
|
period.
|
|
|
|
Users should verify that the outputs they receive from others are not
|
|
encumbered by an unexpected unlock time. Users may want to hold off acting
|
|
upon such a transaction until the unlock time lapses. The `show_transfers`
|
|
command includes the unlock time.
|
|
|
|
### Technical Use
|
|
|
|
Usage when using the `transfer` command: `unlock_time` + unsigned int
|
|
|
|
Integer values less than 500,000,000 are interpreted as absolute block
|
|
height. Values greater than or equal to 500,000,000 are interpreted as an
|
|
absolute Unix epoch timestamp. The Monero CLI wallet only supports values
|
|
less than 500,000,000; Unix timestamps must be submitted via RPC or another
|
|
custom software.
|
|
|
|
The integer value will be interpreted by the protocol as an ***absolute***
|
|
block height value or Unix epoch timestamp, not a relative value. Using an
|
|
integer value less than the current block height or a Unix epoch timestamp
|
|
less than the current Unix epoch timestamp makes no sense. For example, if
|
|
you want the Monero transaction to unlock 100 blocks from now, add 100 to
|
|
the current block height.
|