addmultisigaddress - Bitcoin RPC

addmultisigaddress nrequired ["key",...] ( "account" "address_type" )

Add a nrequired-to-sign multisignature address to the wallet. Requires a new wallet backup.
Each key is a Bitcoin address or hex-encoded public key.
This functionality is only intended for use with non-watchonly addresses.
See `importaddress` for watchonly p2sh address support.
If 'account' is specified (DEPRECATED), assign address to that account.

Arguments:
1. nrequired                      (numeric, required) The number of required signatures out of the n keys or addresses.
2. "keys"                         (string, required) A json array of bitcoin addresses or hex-encoded public keys
     [
       "address"                  (string) bitcoin address or hex-encoded public key
       ...,
     ]
3. "account"                      (string, optional) DEPRECATED. An account to assign the addresses to.
4. "address_type"                 (string, optional) The address type to use. Options are "legacy", "p2sh-segwit", and "bech32". Default is set by -addresstype.

Result:
{
  "address":"multisigaddress",    (string) The value of the new multisig address.
  "redeemScript":"script"         (string) The string value of the hex-encoded redemption script.
}

Result (DEPRECATED. To see this result in v0.16 instead, please start bitcoind with -deprecatedrpc=addmultisigaddress).
        clients should transition to the new output api before upgrading to v0.17.
"address"                         (string) A bitcoin address associated with the keys.

Examples:

Add a multisig address from 2 addresses
> bitcoin-cli addmultisigaddress 2 "[\"16sSauSf5pF2UkUwvKGq4qjNRzBZYqgEL5\",\"171sgjn4YtPu27adkKGrdDwzRTxnRkBfKV\"]"

As json rpc call
> curl --user myusername --data-binary '{"jsonrpc": "1.0", "id":"curltest", "method": "addmultisigaddress", "params": [2, "[\"16sSauSf5pF2UkUwvKGq4qjNRzBZYqgEL5\",\"171sgjn4YtPu27adkKGrdDwzRTxnRkBfKV\"]"] }' -H 'content-type: text/plain;' http://127.0.0.1:8332/

          

This is a website, created out of frustration with uncomplete and outdated Bitcoin Core RPC documentation online.

It was inspired by ChainQuery, which seems to be abandoned. These docs are even simplier, so they can be regenerated by anyone.

Made by @karel_3d; license of the docs is MIT (see bitcoin repo), license of the scripts and webpage is also MIT ((C) 2018 Karel Bilek) (github repo)

Bitcoin version: 0.16.0.

Note that the RPC is from a regtest node (for completeness), so it includes some additional calls that a regular node doesn't have.