Code:
#!/bin/bash
#
# Timestamping program
# Returns a valid bitcoin address made from stdin
# To timestamp, just send tiny BTC to this address
#
# Requires bc, openssl, xxd
#
base58=({1..9} {A..H} {J..N} {P..Z} {a..k} {m..z})
EncodeBase58() {
# 58 =0x3A
bc <<<"ibase=16; n=${1^^}; while(n>0) { n%3A ; n/=3A }" |
tac |
while read n
do echo -n ${base58[n]}
done
}
checksum() {
xxd -p -r <<<"$1" |
openssl dgst -sha256 -binary |
openssl dgst -sha256 -hex |
cut -d\ -f2 |
sed -r "s/^((..){4}).*/\1/"
}
Hash160() {
openssl dgst -sha256 -binary |
openssl dgst -rmd160 -hex |
cut -d\ -f2
}
Hash160ToAddress() {
printf %34s "$(EncodeBase58 "00$1$(checksum "00$1")")" |
sed "s/ /1/g"
}
Hash160ToAddress $(Hash160)
