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

Add a nrequired-to-sign multisignature address to the wallet.
Each key is a Bitcoin address or hex-encoded public key.
If 'account' is specified, assign address to that account.

1. nrequired (numeric, required) The number of required signatures out of the n keys or addresses.
2. "keysobject" (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) An account to assign the addresses to.

"bitcoinaddress" (string) A bitcoin address associated with the keys.


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;'
Don't trust. Verify. Docs extracted from src/rpcwallet.cpp#L875-L901.