Note to Hedera and Gradido Transactions:
	- A Transaction contain TransactionBody serialized 
	- TransactionBody contains the actual transaction
	- Hedera has namespace proto, gradido has namespace model.messages.gradido 


LoginServer
	register NodeServer with (username and password) or API key
	

LoginServer get called with data from http form: 
	- 1 group name
	- 1 group alias
	- x registered node server(s), evt. with API key if not saved
	
	check if alias in unique with choosen NodeServer
	{"jsonrpc": "2.0", "method": "checkAlias", "params": {"alias": <from form>, "apiKey": <optional, unique per Login Server>}, "id": rand()}
Gradido Node return result with 0 or 1 and memorize if apiKey is given (only in memory) by 0 request for 10 minutes
	0 = alias unknown
	1 = alias known
	2 = has blockchain for group of alias

	Hedera::ConsensusService::createTopic
		get TransactionReceipt with TopicID (if succeed, alias unknown)
		// TopicID consists of three int64: shardNum, realmNum, topicNum
	
	Hedera::ConsensusService::ConsensusSubmitMessage
	    proto.ConsensusSubmitMessageTransactionBody.topicID = gradido_discover_topicid // global, must obtained before first node server can go online, maybe hardcoded?
		proto.ConsensusSubmitMessageTransactionBody.message = 
		model.messages.gradido.Transaction
				id = <left empty>;
				received = <left empty>;
				sigMap = model.messages.gradido.SignatureMap
					sigPair = model.messages.gradido.SignaturePair
						pubKey = <public root key of group founder>
						signature = ed25519 = <bodyBytes signed with group founder private key>
				txHash = <left empty>;
				
				bodyBytes = model.messages.gradido.TransactionBody  serialized
					memo = <empty>
					created = model.messages.gradido.TimestampSeconds
						seconds = <current timestamp>
					data = model.messages.gradido.StateCreateGroup
						name = <group name>
						alias = <group alias>
						parentGroupAlias = <parent group alias or empty>
						hederaTopicId = <from hedera answear>
		serialized	
		signed from user, he is the group founder now and can sign group related messages
		
Gradido Node receive from Hedera Mirror Node: model.messages.gradido.Transaction with model.messages.gradido.StateCreateGroup
	validate and save create Group Transaction in state-chain	
	if checkAlias Request for this alias is memorized: 
		create blockchain for this group,
		register for listen to topic of this group
		send HTTP POST Request in json format to login server(s) how called checkAlias with this alias 10 minutes or less before  { 
		/group_created {
			  "alias":StateCreateGroup.alias,
			  "topicID": StateCreateGroup.hederaTopicId,
			  "name": StateCreateGroup.name
			}
LoginServer
	Show succeed

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if node server already know group
LoginServer 
	{"jsonrpc": "2.0", "method": "addGroup", "params": {"alias": <from form>, "apiKey": <unique per Login Server>}, "id": rand()}
	
GradidoNode 
	return {"jsonrpc": "2.0", "result": {"state": "not found", "msg":"group alias not known"}, "id": <id from call>}
	
	create blockchain for this group,
		register for listen to topic of this group
		return {"jsonrpc": "2.0", "result": {
			       "alias":StateCreateGroup.alias,
			       "topicID": StateCreateGroup.hederaTopicId,
			       "name": StateCreateGroup.name
			    }, "id": <id from call>}