> For the complete documentation index, see [llms.txt](https://hub.bsvblockchain.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hub.bsvblockchain.org/higher-learning/bsv-academy/introduction-to-bitcoin-script/chapter-1-about-bitcoin-script/06-nlocktime.md).
# 06 - nLockTime
`00000000`
The final element of the transaction is its nLockTime. nLockTime is the second part of setting up payment channels.
{% file src="/files/dM9mDaRB8QlJgFCQg3gv" %}
Payment channels are a highly useful tool and a native element of the Bitcoin protocol.
When a transaction's nLockTime is in the future, it can be considered non-final if there are also inputs with non-final nSequence values. In this particular transaction, the nLocktime is set to 0x00000000 meaning that the field references block 0 and the transaction is final at any time.
In the above animation it can be seen that the transaction is not final until either the nSequence field is UINT\_MAX or the nLockTime passes which then overrides the fact that the nSequence UINT has not been incremented to its MAX value.
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