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70 lines
2.2 KiB
70 lines
2.2 KiB
4 years ago
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lightning-fundpsbt -- Command to populate PSBT inputs from the wallet
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================================================================
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SYNOPSIS
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--------
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**fundpsbt** *satoshi* *feerate* \[*minconf*\] \[*reserve*\]
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DESCRIPTION
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-----------
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`fundpsbt` is a low-level RPC command which creates a PSBT using unreserved
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inputs in the wallet, optionally reserving them as well.
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*satoshi* is the minimum satoshi value of the output(s) needed (or the
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string "all" meaning use all unreserved inputs). If a value, it can
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be a whole number, a whole number ending in *sat*, a whole number
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ending in *000msat*, or a number with 1 to 8 decimal places ending in
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*btc*.
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You calculate the value by starting with the amount you want to pay
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and adding the fee which will be needed to pay for the base of the
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transaction plus that output, and any other outputs and inputs you
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will add to the final transaction.
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*feerate* is a number, with an optional suffix: *perkw* means the
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number is interpreted as satoshi-per-kilosipa (weight), and *perkb*
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means it is interpreted bitcoind-style as
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satoshi-per-kilobyte. Omitting the suffix is equivalent to *perkb*.
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*minconf* specifies the minimum number of confirmations that used
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outputs should have. Default is 1.
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*reserve* is a boolean: if true (the default), then *reserveinputs* is
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called (successfully, with *exclusive* true) on the returned PSBT.
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RETURN VALUE
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------------
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On success, returns the *psbt* containing the inputs, and
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*excess_msat* containing the amount above *satoshi* which is
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available. This could be zero, or dust. If *satoshi* was "all",
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then *excess_msat* is the entire amount once fees are subtracted
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for the weights of the inputs.
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If *reserve* was true, then a *reservations* array is returned,
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exactly like *reserveinputs*.
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On error the returned object will contain `code` and `message` properties,
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with `code` being one of the following:
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- -32602: If the given parameters are wrong.
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- -1: Catchall nonspecific error.
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- 301: Insufficient UTXOs to meet *satoshi* value.
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AUTHOR
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------
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Rusty Russell <<rusty@rustcorp.com.au>> is mainly responsible.
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SEE ALSO
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--------
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lightning-reserveinputs(7), lightning-unreserveinputs(7).
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RESOURCES
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---------
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Main web site: <https://github.com/ElementsProject/lightning>
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