addmultisigaddress nrequired ["key",...] ( "account" )
Add a nrequired-to-sign multisignature address to the wallet.
Each key is a Okcash address or hex-encoded public key.
If 'account' is specified (DEPRECATED), assign address to that account.
1. nrequired (numeric, required) The number of required signatures out of the n keys or addresses.
2. "keys" (string, required) A json array of okcash addresses or hex-encoded public keys
"address" (string) okcash address or hex-encoded public key
3. "account" (string, optional) DEPRECATED. An account to assign the addresses to.
"address" (string) An okcash address associated with the keys.
Add a multisig address from 2 addresses
> okcashd addmultisigaddress 2 "[\"P16sSauSf5pF2UkUwvKGq4qjNRzBZYqgEL5\",\"P171sgjn4YtPu27adkKGrdDwzRTxnRkBfKV\"]"