mirror of
https://github.com/btcpayserver/btcpayserver.git
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68 lines
3.2 KiB
Bash
68 lines
3.2 KiB
Bash
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#!/bin/bash
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# Creates a 2-of-3 multisig setup, following the procedure described here:
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# https://github.com/bitcoin/bitcoin/blob/master/doc/multisig-tutorial.md
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# https://github.com/bitcoin/bitcoin/blob/master/doc/descriptors.md
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#
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# Usage:
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# ./docker-bitcoin-multisig-setup.sh custom-name
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#
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# The custom name/prefix is optional and defaults to "multisig".
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prefix="${1:-"multi_sig"}"
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declare -A xpubs
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printf "\nš Create descriptor wallets\n\n"
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for ((n=1;n<=3;n++)); do
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# Create descriptor wallets, surpress error output in case wallet already exists
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./docker-bitcoin-cli.sh -named createwallet wallet_name="${prefix}_part_${n}" descriptors=true > /dev/null 2>&1
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# Collect xpubs
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./docker-bitcoin-cli.sh -rpcwallet="${prefix}_part_${n}" listdescriptors > /dev/null 2>&1
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xpubs["internal_xpub_${n}"]=$(./docker-bitcoin-cli.sh -rpcwallet="${prefix}_part_${n}" listdescriptors | jq '.descriptors | [.[] | select(.desc | startswith("wpkh") and contains("/1/*"))][0] | .desc' | grep -Po '(?<=\().*(?=\))')
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xpubs["external_xpub_${n}"]=$(./docker-bitcoin-cli.sh -rpcwallet="${prefix}_part_${n}" listdescriptors | jq '.descriptors | [.[] | select(.desc | startswith("wpkh") and contains("/0/*"))][0] | .desc' | grep -Po '(?<=\().*(?=\))')
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done
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for x in "${!xpubs[@]}"; do
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printf "[%s]=%s\n" "$x" "${xpubs[$x]}";
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done
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external_desc="wsh(sortedmulti(2,${xpubs["external_xpub_1"]},${xpubs["external_xpub_2"]},${xpubs["external_xpub_3"]}))"
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internal_desc="wsh(sortedmulti(2,${xpubs["internal_xpub_1"]},${xpubs["internal_xpub_2"]},${xpubs["internal_xpub_3"]}))"
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external_desc_sum=$(./docker-bitcoin-cli.sh getdescriptorinfo $external_desc | jq '.descriptor')
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internal_desc_sum=$(./docker-bitcoin-cli.sh getdescriptorinfo $internal_desc | jq '.descriptor')
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multisig_ext_desc="{\"desc\": $external_desc_sum, \"active\": true, \"internal\": false, \"timestamp\": \"now\"}"
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multisig_int_desc="{\"desc\": $internal_desc_sum, \"active\": true, \"internal\": true, \"timestamp\": \"now\"}"
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multisig_desc="[$multisig_ext_desc, $multisig_int_desc]"
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# Create multisig wallet, surpress error output in case wallet already exists
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printf "\nš Create multisig wallet\n"
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printf "\nExternal descriptor: $external_desc\n"
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printf "\nInternal descriptor: $internal_desc\n"
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multisig_name="${prefix}_wallet"
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./docker-bitcoin-cli.sh -named createwallet wallet_name="$multisig_name" disable_private_keys=true blank=true descriptors=true > /dev/null 2>&1
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./docker-bitcoin-cli.sh -rpcwallet="$multisig_name" importdescriptors "$multisig_desc" > /dev/null 2>&1
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# Fund the wallet from the default wallet
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printf "\nš° Fund multisig wallet\n"
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newaddress=$(./docker-bitcoin-cli.sh -rpcwallet="$multisig_name" getnewaddress "MultiSig Funding" | tr -d "[:cntrl:]")
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txid=$(./docker-bitcoin-cli.sh -rpcwallet="" sendtoaddress "$newaddress" 0.615)
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printf "\nReceiving address: $newaddress\n"
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printf "\nTransaction ID: $txid\n"
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# Confirm everything worked
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printf "\nā¹ļø Multisig wallet info\n\n"
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./docker-bitcoin-cli.sh -rpcwallet="$multisig_name" getwalletinfo
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# Unload wallets to prevent having to specify which wallet to use in BTCPay, NBXplorer etc.
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for ((n=1;n<=3;n++)); do
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./docker-bitcoin-cli.sh unloadwallet "${prefix}_part_${n}" > /dev/null 2>&1
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done
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./docker-bitcoin-cli.sh unloadwallet "$multisig_name" > /dev/null 2>&1
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