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Update 6_4_Sending_a_Transaction_with_a_Locktime.md

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Shannon Appelcline 2017-05-26 11:42:06 -07:00 committed by GitHub
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6_4_Sending_a_Transaction_with_a_Locktime.md
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@ -99,6 +99,8 @@ $ bitcoin-cli -named decoderawtransaction hexstring=$rawtxhex
```
Note that the sequence number (4294967294) is less than 0xffffffff. This is necessary signalling to show that the transaction includes a locktime. It's also done automatically by `bitcoin-cli`. If the sequence number is instead set to 0xffffffff, your locktime will be ignored.
> **SEQUENCE NOTE (II):** This is the second use of the `nSequence` value in Bitcoin. As with RBF, `nSequence` is again an opt-in, here to the use of locktime. 0xffffffff-1 (4294967294) is the preferred value for signalling locktime because it purposefully disallows the use of both RBF (which requires `nSequence < 0xffffffff-1`) and relative timelock (which requires `nSequence < 0xf0000000`), the other two uses of the `nSequence` value. If you set `nSequence` lower than `0xf0000000`, then you will also relative timelock your transaction, which is probably not what you want.
> **WARNING:** If you are creating a locktime raw transaction by some other means than `bitcoin-cli`, you will have to set the sequence to less than 0xffffffff by hand.
## Send Your Transaction