Structure

The three different account types are Normal, AssetIssue, and Contract. An Account contains 7 parameters:

1. account_name: the name for this account – e.g. BillsAccount.

2. type: what type of this account is – e.g. 0 (stands for type ‘Normal’).

3. balance: balance of this account – e.g. 4213312.

4. vote: received votes on this account – e.g. {(“0x1b7w…9xj3”,323), (“0x8djq…j12m”,88),…,(“0x82nd…mx6i”,10001)}.

5. asset: other assets expected LGCY in this account – e.g. {, }.

6. latest_operation_time: the latest operation time of this account.

Protobuf data structure:

message Account {

message Vote {

bytes vote_address = 1;

int64 vote_count = 2;

}

bytes accout_name = 1;

AccountType type = 2;

bytes address = 3;

int64 balance = 4;

repeated Vote votes = 5;

map<string, int64> asset = 6;

int64 latest_operation_time = 10;

}

enum AccountType {

Normal = 0;

AssetIssue = 1;

Contract = 2;

}

BLOCK

A block typically contains a block header and several transactions.

Protobuf data structure:

message Block {

BlockHeader block_header = 1;

repeated Transaction transactions = 2;

}

BLOCK HEADER

A block header contains raw_data, witness_signature, and blockID.

Protobuf data structure:

message BlockHeader {

message raw {

int64 timestamp = 1;

bytes txTrieRoot = 2;

bytes parentHash = 3;

uint64 number = 4;

uint64 version = 5;

bytes witness_address = 6;

}

bytes witness_signature = 2;

bytes blockID = 3;

}

Raw Data

Raw data is denoted as raw_data in Protobuf. It contains the raw data of a message, containing 6 parameters:

1. timestamp: timestamp of this message – e.g. 1543884429000.

2. txTrieRoot: the Merkle Tree’s Root – e.g. 7dacsa…3ed.

3. parentHash: the hash of the last block – e.g. 7dacsa…3ed.

4. number: the block height – e.g. 4638708.

5. version: reserved – e.g. 5.

6. witness_address: the address of the witness packed in this block – e.g. 41928c…4d21

WITNESS SIGNATURE

Witness signature is denoted as witness_signature in Protobuf, which is the signature for this block header from the witness node.

BLOCK ID

Block ID is denoted as blockID in Protobuf. It contains the atomic identification of a block. A Block ID contains 2 parameters:

1. hash: the hash of block.

2. number: the hash and height of the block.