setup script

Dockerfile

@@ -0,0 +1,29 @@
+FROM ubuntu:20.04
+
+# Install dependencies
+RUN apt-get update && apt-get install -y \
+    build-essential libtool autotools-dev automake \
+    pkg-config bsdmainutils python3 libssl-dev \
+    libevent-dev libboost-system-dev libboost-filesystem-dev \
+    libboost-chrono-dev libboost-test-dev libboost-thread-dev \
+    libdb-dev libdb++-dev
+
+# Clone Bitcoin Core
+RUN apt-get install -y git
+RUN git clone https://github.com/bitcoin/bitcoin.git
+
+# Build Bitcoin Core
+WORKDIR /bitcoin
+RUN ./autogen.sh
+RUN ./configure
+RUN make
+
+# Prepare Signet configuration
+RUN mkdir /root/.bitcoin
+COPY bitcoin.conf /root/.bitcoin/
+
+# Expose necessary ports
+EXPOSE 38333 38332
+
+# Start Bitcoin Core
+CMD ["/bitcoin/src/bitcoind"]

bitcoin.conf

@@ -0,0 +1,4 @@
+signet=1
+[signet]
+daemon=1
+# we would add our custom signet parameters here

signet.sh

@@ -0,0 +1,61 @@
+#!/bin/sh
+
+cd ~/src/bitcoin/src
+
+./bitcoind -regtest -daemon=1 -wallet="test"
+printf "Waiting for regtest bitcoind to start"
+while ! ./bitcoin-cli -regtest getconnectioncount 2>/dev/null 1>&2
+do printf .; sleep 1
+done; echo
+
+ADDR=$(./bitcoin-cli -regtest getnewaddress '' bech32)
+PRIVKEY=$(./bitcoin-cli -regtest dumpprivkey $ADDR)
+PUBKEY=$(./bitcoin-cli -regtest getaddressinfo $ADDR | jq -r .pubkey)
+
+LENX2=$(printf $PUBKEY | wc -c)
+LEN=$((LENX2/2))
+LENHEX=$(echo "obase=16; $LEN" | bc)
+SCRIPT=$(echo 51${LENHEX}${PUBKEY}51ae)
+
+cat <<EOF
+ADDR=$ADDR
+PRIVKEY=$PRIVKEY
+PUBKEY=$PUBKEY
+SCRIPT=$SCRIPT
+EOF
+
+./bitcoin-cli -regtest stop 2>&1
+
+datadir=$HOME/signet-custom-$$
+mkdir $datadir
+cat > $datadir/bitcoin.conf <<EOF
+signet=1
+[signet]
+daemon=1
+signetchallenge=$SCRIPT
+EOF
+
+./bitcoind -datadir=$datadir -wallet="test"
+
+printf "Waiting for custom Signet bitcoind to start"
+while ! ./bitcoin-cli -datadir=$datadir getconnectioncount 2>/dev/null 1>&2
+do printf .; sleep 1
+done; echo
+
+./bitcoin-cli -datadir=$datadir importprivkey "$PRIVKEY"
+NADDR=$(./bitcoin-cli -datadir=$datadir getnewaddress)
+
+# Examples from
+# https://github.com/bitcoin/bitcoin/pull/19937#issuecomment-696419619
+
+../contrib/signet/generate.py --cli="./bitcoin-cli -datadir=$datadir" generate 1 --block-time=1 --address="$NADDR" --grind-cmd='./bitcoin-util grind'
+#../contrib/signet/generate.py --cli="./bitcoin-cli -datadir=$datadir" generate 1 --block-time=1 --address="$NADDR" --backdate 0
+#../contrib/signet/generate.py --cli="./bitcoin-cli -datadir=$datadir" generate 1 --block-time=1 --descriptor="wpkh(...)#..." --secondary
+
+./bitcoin-cli -datadir=$datadir getblocktemplate '{"rules": ["signet","segwit"]}' \
+  | ../contrib/signet/generate.py --cli="./bitcoin-cli -datadir=$datadir" genpsbt --address="$NADDR" \
+  | ./bitcoin-cli -datadir=$datadir -stdin walletprocesspsbt
+
+#../contrib/signet/generate.py solvepsbt --grind-cmd='./bitcoin-util grind' | ./bitcoin-cli -datadir=$datadir submitblock
+
+./bitcoin-cli -datadir=$datadir stop