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42 lines
1.5 KiB
Markdown
42 lines
1.5 KiB
Markdown
(note: this is a temporary file, to be added-to by anybody, and moved to
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release-notes at release time)
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Transaction fee changes
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=======================
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This release automatically estimates how high a transaction fee (or how
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high a priority) transactions require to be confirmed quickly. The default
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settings will create transactions that confirm quickly; see the new
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'txconfirmtarget' setting to control the tradeoff between fees and
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confirmation times.
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Prior releases used hard-coded fees (and priorities), and would
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sometimes create transactions that took a very long time to confirm.
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New Command Line Options
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========================
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-txconfirmtarget=n : create transactions that have enough fees (or priority)
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so they are likely to confirm within n blocks (default: 1). This setting
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is over-ridden by the -paytxfee option.
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New RPC methods
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===============
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Fee/Priority estimation
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-----------------------
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estimatefee nblocks : Returns approximate fee-per-1,000-bytes needed for
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a transaction to be confirmed within nblocks. Returns -1 if not enough
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transactions have been observed to compute a good estimate.
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estimatepriority nblocks : Returns approximate priority needed for
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a zero-fee transaction to confirm within nblocks. Returns -1 if not
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enough free transactions have been observed to compute a good
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estimate.
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Statistics used to estimate fees and priorities are saved in the
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data directory in the 'fee_estimates.dat' file just before
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program shutdown, and are read in at startup.
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