public static byte[] create(byte[] invoker, byte[][] owners, byte[] theOperator, byte[] nonce)
{
BasicMethods.assert(Runtime.CheckWitness(invoker), "CheckWitness failed");
BasicMethods.assert(BasicMethods._isLegalAddresses(owners), "owners addresses are not byte20");
BasicMethods.assert(BasicMethods._isLegalAddress(theOperator), "the operator is not byte20");
//TODO: no need to check the nonce byte[] length
_whenNotPaused();
BasicMethods.assert(BasicMethods._isLegalAddress(theOperator), "New operator is address zero");
byte[] SelfContractHash = ExecutionEngine.ExecutingScriptHash;
byte[] concatRes = SelfContractHash.Concat(invoker).Concat(nonce);
byte[] walletId = SmartContract.Sha256(concatRes);
BasicMethods.assert(getWallet(walletId).theOperator == null, "Occupied wallet id");
Wallet w = new Wallet();
BasicMethods.assert(BasicMethods._isLegalAddresses(owners), "owners contains illegal address");
w.owners = owners;
w.theOperator = theOperator;
BigInteger walletNum = Storage.Get(Storage.CurrentContext, WalletNum).AsBigInteger();
Storage.Put(Storage.CurrentContext, WalletNum, (walletNum + 1).AsByteArray());
Storage.Put(Storage.CurrentContext, WalletsPrefix.Concat(walletId), Helper.Serialize(w));
CreateWallet(walletId, owners, theOperator);
return(walletId);
}