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Merge pull request #611 from 1200wd/master

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Fix bc error with scientific numbers in txfee_calc
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Shannon Appelcline 2026-01-15 12:36:02 -10:00 committed by GitHub
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3 changed files with 3 additions and 3 deletions
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2
04_2__Interlude_Using_JQ.md
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@ -372,7 +372,7 @@ $ usedtxid=($(bitcoin-cli decoderawtransaction $rawtxhex | jq -r '.vin | .[] | .
$ usedvout=($(bitcoin-cli decoderawtransaction $rawtxhex | jq -r '.vin | .[] | .vout')) $ usedvout=($(bitcoin-cli decoderawtransaction $rawtxhex | jq -r '.vin | .[] | .vout'))
$ btcin=$(for ((i=0; i<${#usedtxid[*]}; i++)); do txid=${usedtxid[i]}; vout=${usedvout[i]}; bitcoin-cli listunspent | jq -r '.[] | select (.txid | contains("'${txid}'")) | select(.vout | contains('$vout')) | .amount'; done | awk '{s+=$1} END {print s}') $ btcin=$(for ((i=0; i<${#usedtxid[*]}; i++)); do txid=${usedtxid[i]}; vout=${usedvout[i]}; bitcoin-cli listunspent | jq -r '.[] | select (.txid | contains("'${txid}'")) | select(.vout | contains('$vout')) | .amount'; done | awk '{s+=$1} END {print s}')
$ btcout=$(bitcoin-cli decoderawtransaction $rawtxhex | jq -r '.vout [] | .value' | awk '{s+=$1} END {print s}') $ btcout=$(bitcoin-cli decoderawtransaction $rawtxhex | jq -r '.vout [] | .value' | awk '{s+=$1} END {print s}')
$ echo "$btcin-$btcout"| /usr/bin/bc $ echo $(printf '%.8f-%.8f' $btcin $btcout_f) | /usr/bin/bc
.255 .255
``` ```
And that's also a good example of why you double-check your fees: we'd intended to send a transaction fee of 5,000 satoshis, but sent 255,000 satoshis instead. Whoops! And that's also a good example of why you double-check your fees: we'd intended to send a transaction fee of 5,000 satoshis, but sent 255,000 satoshis instead. Whoops!

2
11_3_Using_CSV_in_Scripts.md
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@ -14,7 +14,7 @@ Easy!
> :information_source: **NOTE — SEQUENCE:** This is the third use of the `nSequence` value in Bitcoin. Any `nSequence` value without the 32nd bit set (1<<31), so 0x00000001 to 0x7ffffffff, will be interpreted as a relative timelock if `nVersion ≥ 2` (which is the default starting in Bitcoin Core 0.14.0). You should be careful to ensure that relative timelocks don't conflict with the other two uses of `nSequence`, for signalling `nTimeLock` and RBF. `nTimeLock` usually sets a value of 0xffffffff-1, where a relative timelock is disallowed; and RBF usually sets a value of "1", where a relative timelock is irrelevent, because it defines a timelock of 1 block. > :information_source: **NOTE — SEQUENCE:** This is the third use of the `nSequence` value in Bitcoin. Any `nSequence` value without the 32nd bit set (1<<31), so 0x00000001 to 0x7ffffffff, will be interpreted as a relative timelock if `nVersion ≥ 2` (which is the default starting in Bitcoin Core 0.14.0). You should be careful to ensure that relative timelocks don't conflict with the other two uses of `nSequence`, for signalling `nTimeLock` and RBF. `nTimeLock` usually sets a value of 0xffffffff-1, where a relative timelock is disallowed; and RBF usually sets a value of "1", where a relative timelock is irrelevent, because it defines a timelock of 1 block.
> In general, remember: with a `nVersion` value of 2, a `nSequence` value of 0x00000001 to 0x7fffffff allows relative timelock, RBF, and `nTimeLock`; a `nSequence` value of 0x7fffffff to 0xffffffff-2 allows RBF and `nTimeLock`; a `nSequence` value of 0xffffffff-1 allows only `nTimeLock`; a `nSequence` value of 0xffffffff allows none; and `nVersion` can be set to 1 to disallow relative timelocks for any value of `nSequence`. Whew! > In general, remember: with a `nVersion` value of 2, a `nSequence` value of 0x00000001 to 0x7ffffff allows relative timelock, RBF, and `nTimeLock`; a `nSequence` value of 0x7fffffff to 0xffffffff-2 allows RBF and `nTimeLock`; a `nSequence` value of 0xffffffff-1 allows only `nTimeLock`; a `nSequence` value of 0xffffffff allows none; and `nVersion` can be set to 1 to disallow relative timelocks for any value of `nSequence`. Whew!
### Create a CSV Relative Block Time ### Create a CSV Relative Block Time

2
src/04_2_i_txfee-calc.sh
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@ -11,4 +11,4 @@ usedvout=($(bitcoin-cli decoderawtransaction $1 | jq -r '.vin | .[] | .vout'))
btcin=$(for ((i=0; i<${#usedtxid[*]}; i++)); do txid=${usedtxid[i]}; vout=${usedvout[i]}; bitcoin-cli listunspent | jq -r '.[] | select (.txid | contains("'${txid}'")) | select(.vout | contains('$vout')) | .amount'; done | awk '{s+=$1} END {print s}') btcin=$(for ((i=0; i<${#usedtxid[*]}; i++)); do txid=${usedtxid[i]}; vout=${usedvout[i]}; bitcoin-cli listunspent | jq -r '.[] | select (.txid | contains("'${txid}'")) | select(.vout | contains('$vout')) | .amount'; done | awk '{s+=$1} END {print s}')
btcout=$(bitcoin-cli decoderawtransaction $1 | jq -r '.vout [] | .value' | awk '{s+=$1} END {print s}') btcout=$(bitcoin-cli decoderawtransaction $1 | jq -r '.vout [] | .value' | awk '{s+=$1} END {print s}')
btcout_f=$(awk -v btcout="$btcout" 'BEGIN { printf("%f\n", btcout) }' </dev/null) btcout_f=$(awk -v btcout="$btcout" 'BEGIN { printf("%f\n", btcout) }' </dev/null)
echo "$btcin-$btcout_f"| /usr/bin/bc echo $(printf '%.8f-%.8f' $btcin $btcout_f) | /usr/bin/bc