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bitcoin.blk.sh
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#!/usr/bin/env bash
# v0.8.23 jan/2024 by mountaineerbr
# bitcoin block information and functions
# requires bitcoin-cli and jq 1.6+
# tested to work with bitcoin-daemon v22!
#script name
SN="${0##*/}"
#print simple
#feedback to stderr
OPTVERBOSE=0
#separator for option -n
#defaults='\t'
SEP='\t'
#mininum length to print sequences
#of characters, opt -y
#defaults=20
STRMIN="${STRMIN:-20}"
#maximum simultaneous asynchronous jobs
#defaults=1
JOBSDEF=1
#timezone
#defaults=UTC0
TZ="${TZ:-UTC0}"
export TZ
#set locale
#LC_NUMERIC=C
LANG=C LC_ALL=C
#printf clear line
CLR='\033[2K'
#genesis block hash (same as coinbase tx hash)
#requesting this may throw errors in some funcs
GENBLK_HASH=000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f
#get tx with `bitcoin-cli getblock $GENBLK_HASH 2`
#help
HELP="NAME
$SN - Bitcoin block information and functions
SYNOPSIS
$SN [-.,] [BLOCK_HASH..|BLOCK_HEIGHT..]
$SN [-dd] [-luvx] [-jNUM] [DATESTRING|@UNIXTIME]
$SN [-giiyy] [-lv] [-jNUM] [BLOCK_HASH..|BLOCK_HEIGHT..]
$SN -t [-lnuvx] [-jNUM] [BLOCK_HASH..|BLOCK_HEIGHT..]
$SN -mmm [-lv] [-jNUM] [TRANSACTION_ID..]
$SN [-bhV]
DESCRIPTION
By defaults, print header block information of BLOCK_HASH or
BLOCK_HEIGHT. If option -i is set, prints more block information
and stats. If option -ii is set, prints only transaction hashes
from blocks. If option -g is set, prints JSON of all transactions
from blocks.
Multiple block hashes or height numbers are allowed. If empty,
fetches hash of best (last) block. Negative integers refer to
blocks from the tip (e.g. -10, 10-, .10 or 10.), see note on exam-
ple (1.2). Positional parameters with a . (dot) refer to the tip.
Option -. (dot option) prints block height and -, (comma option)
prints block hash. Multiple block heights and hashes may be set as
positional parameters. Negative index from the tip is accepted. If
no positional parameter is given, fetches best block. Options -,.
may be combined.
General Options
Option -c CONFIGFILE sets the configuration file path (bitcoin.conf)
if that is in a custom location other than defaults, see also
section ENVIRONMENT.
Option -l sets local time instead of UTC time; this affects how
DATESTRING from user input is interpreted, too.
Option -u prints time in human-readable format ISO 8601 and -uu
prints in RFC 5322.
Option -v enables verbose, set twice to more verbose.
Job Control
To speed up processing of some options, setting maximum number of
asynchronous jobs with option -jNUM is allowed, in which case NUM
must be an integer or \`auto'; increasing NUM may only return modest
speed gains; defaults jobs=$JOBSDEF .
Beware that asynchronous jobs may lose the print lock momentarily
for another job and output may get mixed. To avoid that, try setting
-j1 .
Find Block at Date
Option -d DATESTRING finds the block height immediately before or
at a date, in which DATESTRING is a string describing a date that
is understandable by the GNU date programme. Note that option -l
changes interpretation of input time as local time; by defaults,
compare block \`times'; set -x to compare block \`mediantimes';
set option -v to check target and matched times. If input string
is UNIX time, attach an \`\`at'' (@) sign to it, see usage example
(3).
Option -d takes user input and tries to autocorrect it to a format
GNU date programme can understand. Check date interpretation ver-
bosely with option -v. Some autocorrection of user input date for-
mats is performed; if needed, set -d twice to disable autocorrec-
tion.
Block Timestamp List
Option -t generates a list of block timestamps, one timestamp per
line. Set option -n to print block height hash besides block time
separated by <TAB> control character. The defaults behaviour is
to print block \`time'; set -x to print \`mediantime' instead.
Check reference at SEE ALSO for the distinction between both.
To print time in human-readable formats, see options -uu.
Mempool Information
Option -m prints mempool transaction ids and -mm prints mempool
transactions with more information. Optionally, transaction ids
from the mempool are accepted as positional parameters. Option
-mmm prints the number of transactions, their fees and some stats.
Other Functions
Option -b prints various blockchain, network and some other infor-
mation and statistics.
Option -y will convert hex from a coinbase transaction to ascii
text. The output will be filtered to print sequences that are at
least $STRMIN characters long, unless that returns empty, in which
case there is decrement of one character until nought. If nought
is reached, the raw byte output will be printed. You may set
-yy to print raw byte output, see example (4).
ENVIRONMENT
BITCOINCONF
Path to bitcoin.conf or equivalent file with configs
such as RPC user and password, is overwritten by script
option -c, defaults=\"\$HOME/.bitcoin/bitcoin.conf\".
STRMIN Sets mininum length to print sequences of characters
for options opt -y; alternatively, see usage example (4.3).
TZ Sets timezone; if none set, defaults to UTC0 (GMT).
SEE ALSO
A bitcoin-cli script to try and find approximate block height
at a date. This was the inspiration of what became option -d
in this script. Specifically, the usage of the bisection technique.
<github.com/kristapsk/bitcoin-scripts/blob/master/blockheightat.sh>
Median Time vs. Time of a Block
<https://github.com/bitcoin/bips/blob/master/bip-0113.mediawiki>
WARRANTY
Licensed under the gnu general public license 3 or better and
is distributed without support or bug corrections.
Bitcoin-cli v0.21+, jq 1.6+, xxd, GNU date v5.3+ and bash are required.
If you found this programme interesting, please consider
sending feedback! =)
BUGS
Not a real bug but note that some maths are performed with package
\`jq', which uses double float values, thus 0.999999 may actually
be 1 round.
BLOCK REFERENCES
BLOCK UNIX TIME HUMAN-READABLE TIME (UTC)
#0 Genesis 1231006505 2009-01-03T18:15:05+00:00
#1 Height 1 1231469665 2009-01-09T02:54:25+00:00
USAGE EXAMPLES
1) Get block information by block hash or height
1.1) Information of 3 blocks, input is mixed with block heights
and hashes:
$ $SN 200000 00000000000000000007316856900e76b4f7a9139cfbfba89842c8d196cd5f91
1.2) Negative index, the 10th, 11th and 12th block before best
block (blockchain tip); use either minus or dot sign; do
note that -- signals the end of script options, if any:
$ $SN 10- 11- 12-
$ $SN 10. 11. 12.
$ $SN -- -10 -11 -12
2.1) Generate a list of timestamps (block time) from block 0 to 1000,
defaults to one job at most, output is ordered.
$ $SN -t {0..1000}
2.2) Generate a list of timestamps (mediantime) from block 0 to 1000,
set max jobs to 4; faster but prints asynchronously, so we will
sort output numerically.
$ $SN -tx -j4 {0..1000} | tee | sort -n
3) Find a block at or immediately before a date and time.
Note that date format must be understood by GNU \`date\`
3.1) UNIX time format
$ $SN -d @1584007200
3.2) Verbose with human-readable time formats
$ $SN -duuv '12-mar-2020 10:00'
3.3) Local time instead of UTC0 (GMT)
$ $SN -duuvl '12 mar 2020 10:00:00'
3.4) Local time
$ $SN -dl 'yesterday 9:00pm'
4.1) Decode hex code from coinbase transaction of a block to
ascii text:
$ $SN -y 0000000000000000000080324fdf044b64f0661b3562a5729a51722d007d90b8
4.2) Decode hex code from coinbase of the last 10 blocks (note
usage of brace expansion and negative relative block height):
$ $SN -y -- -{0..9}
$ $SN -y .{0..9}
4.3) Some other usage examples with package \`strings':
$ $SN -yy 666076 | strings -n 20
$ strings -n 20 blk00003.dat #decode the whole block file
5) Parse all transactions from best block; note that bitcoin.tx.sh
is a companion suite script from the same author:
$ $SN -g | bitcoin.tx.sh -ff #fast, less tx info
$ $SN -ii | bitcoin.tx.sh #slow, detailed tx info
OPTIONS
Miscellaneous
-e Debugging.
-h Print this help page.
-v Verbose, may set multiple times.
-V Print script version.
General
-c CONFIGFILE
Path to bitcoin.conf or equivalent configuration file,
defaults=\"\$HOME/.bitcoin/bitcoin.conf\".
-l Set \`local time' instead of \`UTC time'.
-u Print time in ISO8601 format, set twice for RFC5322.
-x Set block \`mediantime' instead of \`time'.
Job Control
-j NUM Maximum simultaneos jobs, may print asynchronously,
defaults=$JOBSDEF .
Timestamp List
-n Print block hash besides block timestamp.
-t [HASH|HEIGHT]
Generate a list of block \`time' timestamps; see also
options -luux.
Memory Pool
-m Print mempool transaction ids.
-mm [TXID]
Print mempool transactions with more info, if empty,
process the whole mempool.
-mmm, -M
Print number of transactions, fees and more stats.
Find Block at Date
-d DATESTRING
Find block height before or at time/date, see also options
-luuvx.
-dd Disable autocorrection of user input; only set this if -d
misbehaves.
Blockchain Information
-b General blockchain, mempool, mining, network and rpc info.
Block Information
-. Print block height.
-, Print block hash.
-g Prints raw JSON of all block transactions.
-i Header information and stats.
-ii Transaction hashes.
-y Decode coinbase HEX to ASCII text and print sequences
longer than $STRMIN chars only.
-yy, -Y Same as -y but prints all bytes."
#functions
#err signal
errsigf()
{
local sig="${1:-1}"
echo "$sig" >>"$TMPERR"
}
#clean temp files
cleanf() {
#disable trap
trap \ EXIT
#check for err signals in err temp file
if [[ -e "$TMPERR" ]]
then while read; do ((RET+=$REPLY)) ;done <"$TMPERR"
rm -- "$TMPERR"
fi 2>/dev/null
#verbose feedback
(( OPTVERBOSE )) &&
printf '\n>>>took %s seconds (%s min)\n' "$SECONDS" "$(( SECONDS / 60 ))" >&2
#sum exit codes from other funcs
exit $RET
}
#get unix time from user input
#print error msg only if DATE is not human or unix time
dateunixfhelper()
{
local str str2 seprm fmt
#out-time format
fmt=+%s
#chars to remove
seprm='[ /._-]*'
#set string
str="$*"
#try this new separator
sep="$sep"
#defaults
if date -d"$str" "$fmt"
then return 0
#some unusual date input formats
elif str2="$( sed -En "s:([0-9]{1,4})(${seprm})([a-zA-Z]{3,}|[0-9]{1,2})(${seprm})([0-9]{1,4}):\1${sep}\3${sep}\5:p" <<<"$str" )" &&
[[ -n "$str2" ]] && date -d"$str2" "$fmt"
then return 0
elif str2="$( sed -En "s:([0-9]{1,4})(${seprm})([a-zA-Z]{3,}|[0-9]{1,2})(${seprm})([0-9]{1,4}):\5${sep}\3${sep}\1:p" <<<"$str" )" &&
[[ -n "$str2" ]] && date -d"$str2" "$fmt"
then return 0
fi
return 1
}
#check DATE format validity
checkdatef() {
local unix sepout sep unix unixmin unixmax ok
#disable date checking?
(( OPTDATE > 1 )) && return 1
#rm extra chars froma rgs
set -- "${@#[./]}"
set -- "${@%[./]}"
#only one letter is not date
#not a date format
if [[ "$*" = [a-z] ]] || (( ( ${#1} + ${#2} ) < 3 ))
then return 1
fi
#try these separators
for sep in \ \/ \-
do unix="$( dateunixfhelper "$@" )" && break
done
(( unix )) || return 1
echo "$unix"
return 0
}
#decode coinbase HEX
deccoinbf()
{
local ascii coinb num rawtx strs txhex ret
#get coinbase tx hash
coinb="$( jq -r '.tx[0]' <<< "$BLK" )"
((ret += $?))
#get coinbase raw tx data and its hex
#is target other block than genesis block?
if [[ "$BLK_HASH" = "$GENBLK_HASH" ]]
then
#genesis block tx
rawtx="$coinb"
else
rawtx="$(bwrapper getrawtransaction "$coinb" true)"
((ret += $?))
fi
#get coinbase hex
txhex="$(jq -r '.hex' <<<"$rawtx" )"
((ret += $?))
#or: .vin[].hex
#verbose?
(( OPTVERBOSE )) &&
echo -ne "--------\nBLK_: $BLK_HASH\nTXID: $coinb\nHEX_: $txhex\nASCI: "
#print ascii text
if ((OPTASCII>1))
then
<<<"$txhex" xxd -p -r
else
#decode hex to ascii (ignore null byte warning)
{ ascii="$(<<<"$txhex" xxd -p -r)" ;} 2>/dev/null
for ((num=STRMIN ;num>=0 ;--num))
do
((num)) || break
strs="$( strings -n "$num" <<<"$ascii" )"
#-n Print sequences of characters that are
#at least min-len characters long, instead of the default 4
[[ -n "${strs// /}" ]] && break
done
#decide how to print
if ((num))
then
#there was some output from `strings`
echo "$strs"
else
#otherwise print the raw ascii
<<<"$txhex" xxd -p -r
fi
fi
((ret += $?))
#sum exit codes
return $ret
}
#https://bitcoin.stackexchange.com/questions/90684/how-to-decode-a-coinbase-transaction
#you can just print every string in the blockchain database directly
#{ strings -n 20 blk0000.dat ;}
#https://bitcoin.stackexchange.com/questions/18/how-can-one-embed-custom-data-in-block-headers
#is block hash or height?
ishashf()
{
local hx
hx="$1"
#grep -qEx '[0]{8}[a-fA-F0-9]{56}' <<<"$hx"
[[ "$hx" =~ ^[0]{8}[a-fA-F0-9]{56}$ ]]
}
#blockchain general information
#mempool, network information
blockchainf()
{
local chain_info forknames ret
#rpc info
((OPTVERBOSE)) && printf "\r${CLR}%s " "Getting RPC info.." >&2
bwrapper getrpcinfo \
| jq -r '"",
"--------",
"RPC-call information",
"Commands:",
( .active_commands[]|" Method: \(.method)\t Duration: \(.duration) µs" ),
"Logpath_: \(.logpath)"'
((ret += $?))
#network info
((OPTVERBOSE)) && printf "\r${CLR}%s " "Getting Network info.." >&2
bwrapper getnetworkinfo \
| jq -r '"",
"--------",
"Network information",
"Version_: \(.version)",
"SubVersi: \(.subversion)",
"ProtVers: \(.protocolversion)",
"LService: \(.localservices)",
"LSerName: \(.localservicesnames|@sh)",
"LocRelay: \(.localrelay)",
"TiOffset: \(.timeoffset)",
"NetwActv: \(.networkactive)",
"Connects: \(.connections)",
"ConnecIn: \(.connections_in)",
"ConneOut: \(.connections_out)",
"Networks:",
( .networks[]|
" Name__: \(.name)\t Limitd: \(.limited)\t Reachb: \(.reachable)\t PxRand: \(.proxy_randomize_credentials)\t Proxy_: \(.proxy//"-")"
),
"RelayFee: \(.relayfee) BTC/kB",
"IncreFee: \(.incrementalfee) BTC/kB",
"LocalAddresses:",
(.localaddresses[]|
" Addres: \(.address)\t Port__: \(.port)\t Score_: \(.score)"
),
"Warnings: \(if .warnings == "" then empty else .warnings end)"'
((ret += $?))
#human readable table with inbound and outbound peers
echo
bwrapper -netinfo ;((ret += $?))
#net totals
((OPTVERBOSE)) && printf "\r${CLR}%s " "Getting Net Totals info.." >&2
bwrapper getnettotals \
| jq -r '"",
"--------",
"Net totals information",
"TotBRecv: \(.totalbytesrecv) B\t \(if (.totalbytesrecv/1000000) < 2000 then "\(.totalbytesrecv/1000000) MB" else "\(.totalbytesrecv/1000000000) GB" end)",
"TotBSent: \(.totalbytessent) B\t \(if (.totalbytessent/1000000) < 2000 then "\(.totalbytessent/1000000) MB" else "\(.totalbytessent/1000000000) GB" end)",
"UNIXEpoc: \(.timemillis) [ms]",
"UplodTgt:",
(.uploadtarget |
" TimeFram: \(.timeframe) s",
" Target__: \(.target) B",
" TgtReach: \(.target_reached)",
" SHistBlk: \(.serve_historical_blocks)",
" BLeftCyc: \(.bytes_left_in_cycle) B",
" TLeftCyc: \(.time_left_in_cycle) s"
)'
((ret += $?))
#get mining stats
((OPTVERBOSE)) && printf "\r${CLR}%s " "Getting Mining info.." >&2
bwrapper getmininginfo \
| jq -r '"",
"--------",
"Mining information",
"Chain___: \(.chain)",
"Blocks__: \(.blocks)",
"Difficul: \(.difficulty)",
"HashRate: \(.networkhashps) H/s\t \(.networkhashps/1000000000000000000 | tostring | .[0:6]) EH/s",
"BlockETA: \(((.difficulty * pow(2; 32)) / .networkhashps)/60 | tostring | .[0:6])min",
"PooledTx: \(.pooledtx) txs",
"Warnings: \(if .warnings == "" then empty else .warnings end)"'
((ret += $?))
#get mempool data
((OPTVERBOSE)) && printf "\r${CLR}%s " "Getting Mempool info.." >&2
bwrapper getmempoolinfo \
| jq -r '"",
"--------",
"Mempool information",
"Loaded__: \(.loaded)",
"Min_Fee_: \( .mempoolminfee ) sat/KB\t \(.mempoolminfee/1000) sat/B",
"MinRlyFe: \( .minrelaytxfee ) sat/KB\t \(.minrelaytxfee/1000) sat/B",
"MaxMempo: \(.maxmempool)\t \(.maxmempool / 1000000 | tostring | .[0:6] ) MB",
"UsageTot: \(.usage)\t \(.usage / 1000000 | tostring | .[0:6] ) MB",
"vTxSize_: \(.bytes)\t \(.bytes / 1000000 | tostring | .[0:6] ) MvB",
"UnbroadC: \(if .unbroadcastcount == 0 then empty else .unbroadcastcount end)",
"Tx_Count: \(.size) txs"'
((ret += $?))
#the eternal question (block eta)
#https://en.bitcoin.it/wiki/Difficulty
#blockchain and fork information
((OPTVERBOSE)) && printf "\r${CLR}%s " "Getting Blockchain info.." >&2
((OPTVERBOSE)) && printf "\r${CLR}%s " "Getting Fork info.." >&2
chain_info="$(bwrapper getblockchaininfo)"
((ret += $?))
if forknames=( $(jq -r '.softforks // empty | keys_unsorted[]' <<<"$chain_info" 2>/dev/null) )\
&& [[ -n "${forknames[*]}" ]]
then
echo -e "\n--------\nBlockchain forks"
for key in "${forknames[@]}"
do
<<< "$chain_info" jq -r --arg key "$key" '.softforks | .[$key] |
" Name: \($key)\t Type: \(.type)\t Active: \(.active)\t Height: \(.height)"'
done
fi
#general info
<<< "$chain_info" jq -r '"--------",
"Blockchain status",
"Warnings: \(.warnings // empty)",
"Chain___: \(.chain)",
"Blocks__: \(.blocks)",
"Headers_: \(.headers)",
"IniBlkDl: \(.initialblockdownload)",
"Pruned?_: \(.pruned)",
"SizeDisc: \(.size_on_disk) B\t \(.size_on_disk / 1000000000 | tostring | .[0:6] ) GB",
"Verifica: \(.verificationprogress)\t \(.verificationprogress * 100 | tostring | .[0:6] ) %",
"BestBlk_: \(.bestblockhash)",
"ChainWrk: \(.chainwork)",
"Difficul: \(.difficulty)",
"MedianTi: \(.mediantime // empty)\t \((.mediantime // empty) | '"$HH"' )"'
#sum exit codes
return $ret
}
#general block information and block transactions
defaultf()
{
local blk_stat ret jqblock jqblockb jqblockC jqblockD
#print transaction hashes
if ((OPTI > 1))
then
((OPTI > 2)) && jqblockC='"","============","Block transactions",' jqblockD=',"--------"'
<<<"$BLK" jq -r "$jqblockC"'.tx[]'"$jqblockD"
((OPTI > 999 || OPTI == 2)) && return
elif ((OPTI == 1))
then jqblockB='"","============",'
else jqblock='"","============",'
fi
#stats opt -- is target other block than genesis block?
if [[ "$OPTI" = [31] && "$BLK_HASH" != "$GENBLK_HASH" ]]
then
blk_stat="$( bwrapper getblockstats \""$BLK_HASH"\" )"
<<<"$blk_stat" jq -r "$jqblockB"'"Block status",
"Height__: \(.height)",
"Avg_Fee_: \(.avgfee) sat/KB \t \(.avgfee/1000) sat/B",
"Med_Fee_: \(.medianfee) sat/KB\t \(.medianfee/1000) sat/B",
"Min_Fee_: \(.minfee) sat/KB\t \(.minfee/1000) sat/B",
"Max_Fee_: \(.maxfee) sat/KB\t \(.maxfee/1000) sat/B",
"--------",
"Transaction Fee Rates",
"AvgFeeRt: \(.avgfeerate) sat/vB",
"MinFeeRt: \(.minfeerate) sat/vB",
"MaxFeeRt: \(.maxfeerate) sat/vB",
"FeeRtPct: \(.feerate_percentiles | tostring ) sat/vB",
"--------",
"Segwit transactions",
"Segw_Txs: \(.swtxs)",
"SwTotWgt: \(.swtotal_weight) WU",
"SwTotSiz: \(.swtotal_size) B\t \(.swtotal_size/1000) KB",
"--------",
"Transaction status",
"AvgTxSiz: \(.avgtxsize) B\t \(.avgtxsize/1000) KB",
"MedTxSiz: \(.mediantxsize) B\t \(.mediantxsize/1000) KB",
"MinTxSiz: \(.mintxsize) B\t \(.mintxsize/1000) KB",
"MaxTxSiz: \(.maxtxsize) B\t \(.maxtxsize/1000) KB",
"--------",
"Txs_In__: \(.ins)",
"Txs_Out_: \(.outs)",
"Utxo_Inc: \(.utxo_increase)",
"UtxoSizI: \(.utxo_size_inc)",
"--------",
"TotalWgt: \(.total_weight) WU",
"TotalSiz: \(.total_size) B\t \(.total_size/1000) KB",
"TotalOut: \(.total_out)\t \(.total_out/100000000) BTC",
"Subsidy_: \(.subsidy)\t \(.subsidy/100000000) BTC",
"TotalFee: \(.totalfee)\t \(.totalfee/100000000) BTC",
"--------"'
((ret += $?))
fi
#print block information
<<<"$BLK" jq -r "$jqblock"'"Block information",
"Hash____: \(.hash)",
"MrklRoot: \(.merkleroot)",
"PrevBlkH: \(.previousblockhash)",
"NextBlkH: \(.nextblockhash // empty)",
"Chainwrk: \(.chainwork)",
"Difficul: \(.difficulty)",
"Version_: \(.version)",
"Vers_Hex: \(.versionHex)",
"Bits____: \(.bits)",
"Nonce___: \(.nonce)",
"Txs_____: \(.nTx)",
"Confirma: \(.confirmations)",
"Size____: \(.size //empty) B\t \((.size //empty)/1000) KB",
"Stripped: \(.strippedsize //empty) B\t \((.strippedsize //empty)/1000) KB",
"Weight__: \(.weight //empty) WU\t \((.weight //empty)/4000) vKB",
"Height__: \(.height)",
"MedianTi: \(.mediantime // empty)\t \((.mediantime // empty) | '"$HH"' )",
"Time____: \(.time // empty)\t \((.time // empty)| '"$HH"')"'
((ret += $?))
#sum exit codes
return $ret
}
#find a block at timestamp
heightatf()
{
local HEIGHTDELTA HEIGHTLAST HEIGHTMAX HEIGHTMIN HEIGHTMINLAST \
HEIGHTSTART HEIGHTTIMELAST TARGETTIME INPUT TIME DATEOPT
INPUT="$*"
#human readable opt
((OPTHUMAN>1)) && DATEOPT='-R' || DATEOPT='-Iseconds'
#check if there is any user input
if [[ -z "$INPUT" ]]
then
echo "$SN: err -- DATE string required" >&2
return 1
#user input $INPUT
#find block at TARGET time
elif
! TARGETTIME="$( date -d"$INPUT" +%s 2>/dev/null || checkdatef "$INPUT" 2>/dev/null )"
then
#print error message
date -d"$INPUT" +%s
echo "$SN: err: invalid date format -- $INPUT" >&2
return 1
fi
#current blockchain height
#user input or get the latest block height
HEIGHTMAX="$( bwrapper getblockchaininfo )" || return
HEIGHTMAX="$( jq -r .blocks <<< "$HEIGHTMAX" )"
HEIGHTSTART=1
HEIGHTLAST="$HEIGHTMAX"
HEIGHTMIN="$HEIGHTSTART"
#check times
#genesis: 1231006505 #block 1: 1231469665
if (( TARGETTIME > $(date +%s) )) || (( TARGETTIME < 1231006505 ))
then echo "$SN: DATE out of range -- @${TARGETTIME} $(date -R -d@$TARGETTIME)" >&2 ;return 1
fi
#loop
while true
do
HEIGHTMINLAST="$HEIGHTLAST"
HEIGHTTIMELAST="$HEIGHTTIME"
(( HEIGHTDELTA = ( HEIGHTLAST - HEIGHTMIN ) / 2 ))
(( HEIGHTMIN = HEIGHTLAST - HEIGHTDELTA ))
BLK_INFO_LAST=( "${BLK_INFO[@]}" )
BLK_INFO=( $( bwrapper getblockheader "$( bwrapper getblockhash "$HEIGHTMIN" )" | jq -r .${OPTMEDTIME}time,.hash ) )
HEIGHTTIME="${BLK_INFO[0]}"
HEIGHTDELTA="${HEIGHTDELTA#-}"
#verbose
if (( OPTVERBOSE ))
then
TIME="$HEIGHTTIME"
(( OPTHUMAN )) && TIME="$( date $DATEOPT -d@"$HEIGHTTIME" )"
printf '%s: %*d %s: %s\n' height 6 $HEIGHTMIN date "$TIME" >&2
fi
if (( HEIGHTTIME == TARGETTIME ))
then
HEIGHTTIMELAST="$HEIGHTTIME"
HEIGHTMINLAST="$HEIGHTMIN"
break
elif (( HEIGHTDELTA == 1 ))
then
if (( HEIGHTTIMELAST < TARGETTIME )) && (( HEIGHTTIME > TARGETTIME ))
then
break
elif (( HEIGHTMAX == HEIGHTMIN ))
then
HEIGHTTIMELAST="$HEIGHTTIME"
HEIGHTMINLAST="$HEIGHTMIN"
break
else
HEIGHTDELTA=2
fi
fi
if (( HEIGHTTIME > TARGETTIME ))
then
HEIGHTLAST="$HEIGHTMIN"
(( HEIGHTMIN = HEIGHTMIN - HEIGHTDELTA ))
elif (( HEIGHTTIME < TARGETTIME ))
then
HEIGHTLAST="$HEIGHTMIN"
(( HEIGHTMIN = HEIGHTMIN + HEIGHTDELTA ))
fi
done
#print result
#verbose?
if (( OPTVERBOSE ))
then
cat <<-!
Target_Time: $TARGETTIME $( date $DATEOPT -d@"$TARGETTIME" )
Match__Time: $HEIGHTTIMELAST $( date $DATEOPT -d@"$HEIGHTTIMELAST" )
Block__Hash: ${BLK_INFO_LAST[1]}
BlockHeight: $HEIGHTMINLAST
!
else
echo "$HEIGHTMINLAST"
fi
}
#print block hash and height
gethashheightf()
{
local arg blk_height blk_hash bestblk ret
typeset -a bestblk
#expand braces, ex '{1..10}'
for arg in $@
do
#is negative index?
#get best block hash and height, set [bestblock - index]
if [[ "$arg" = @(+([.,-])+([0-9])*([.,-])|*([.,-])+([0-9])+([.,-])) ]]
then (( ${#bestblk[@]} )) || bestblk=( $( bestblkfun ) )
arg=$((bestblk[1] - ${arg//[.,-]}))
fi
#is block hash or height?
if ishashf $arg
then
blk_hash=$arg
if ((OPTDOT))
then blk_height=$(bwrapper getblock $arg | jq -r '.height') || {
echo "invalid block hash/height -- $arg" >&2
((++ret)) ;continue
}
fi
else
if ((OPTCOMMA))
then blk_hash="$( bwrapper getblockhash $arg )" || {
echo "invalid block hash/height -- $arg" >&2
((++ret)) ;continue
}
fi
blk_height=$arg
fi
#how to print?
((OPTDOT)) && printf '%s' $blk_height
((OPTCOMMA)) && printf "${OPTDOT+\t}%s" $blk_hash
printf \\n
done
#get best block hash and height
(($#)) || {
bestblk=( $( bestblkfun ) )
#how to print?
((OPTDOT)) && printf '%s' ${bestblk[1]}
((OPTCOMMA)) && printf "${OPTDOT+\t}%s" ${bestblk[0]}
printf \\n
}
#sum exit codes
return $ret
}
#get best block hash and height
bestblkfun()
{
bwrapper getblockchaininfo | jq -er .bestblockhash,.blocks
}
#block information, transaction hashes or decode coinbase hex
mainf()
{
local TOTAL N
local arg bestblk blocks ret
typeset -a blocks bestblk
#total number of arguments
TOTAL="$#"
#is there positional args from user?
if ((TOTAL))
then
#let braces expand, ex '{1..10}'
for arg in $@
do
#if argument is . or , , get best block
if [[ "$arg" = +(.|,) ]]
then
#get bets block hash from ., operators
(( ${#bestblk[@]} )) || bestblk=( $( bestblkfun ) ) || return
blocks+=( ${bestblk[0]} )
elif [[ "$arg" = @(+([.,-])+([0-9])*([.,-])|*([.,-])+([0-9])+([.,-])) ]]
then
#negative integers (block from the tip)
#get best block hash and height
(( ${#bestblk[@]} )) || bestblk=( $( bestblkfun ) ) || return
blocks+=( $((bestblk[1] - ${arg//[.,-]})) )
else
#positive integers
#block hashes
blocks+=( $arg )
fi
done
set -- "${blocks[@]}"
else
#get best block hash
bestblk=( $( bestblkfun ) ) || return
echo "Best block height: ${bestblk[1]}" >&2
set -- "${bestblk[0]}"
fi
#multiple jobs?
if ((JOBSMAX>1))
then
#get block info
for arg in "$@"
do
#counter
((++N))
#job control (batch)
((N % JOBSMAX)) || wait
{ mainenginef || errsigf $? ;} &
done
wait
else
#get block info
for arg in "$@"
do ((++N)) ;mainenginef ;((ret+=$?))
done
fi
#sum exit codes
return $ret
}
mainenginef()
{
local BLK BLK_HASH BLK_HEIGHT ret
#is block hash or height?
if ishashf "$arg"
then
BLK_HASH="$arg" BLK_HEIGHT=
else
if ! BLK_HASH="$( bwrapper getblockhash "$arg" )"
then
echo "invalid block hash/height -- $arg" >&2
errsigf ;return 1
fi
BLK_HEIGHT="$arg"
fi
#get block info
#is target other block than genesis block?
if [[ "$OPTI" -ge 1000 || ( "$BLK_HASH" = "$GENBLK_HASH" && -n "$OPTI" ) ]]
then
#all block transaction json
#genesis block with tx info
BLK="$( bwrapper getblock "$BLK_HASH" 2 )"
else
#common block tx info
if ((OPTASCII + OPTI))
then BLK="$( bwrapper getblock "$BLK_HASH" true )" #full block
else BLK="$( bwrapper getblockheader "$BLK_HASH" true )" #only header
fi
fi
((ret += $?))
#debug? print raw data
if ((DEBUGOPT))
then
echo "$BLK"
echo "$BLK_HASH"