kokonut

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What is Kokonut…?

BlockChain Framework powered by Kotlin

Kokonut Protocol

Version : 4

Abstract

This protocol describes block chain systems & rules of kokonut.

Block

The ‘Block’ is the collection of data which contains uniqueness.
Blocks have meaning and value only when they are connected to each other.
Format is JSON(.json).

Basic Structure

version : The kokonut protocol verison (match to major number of library version).
index : The numbering of block which previous block index < next block index.
previousHash : The hash of previous block.
timestamp : Time relative to UTC. Indicates the time the block difficulty was solved.
data :
difficulty : The numbers of leading 0 of hash. All block hash must follow difficulty.
nonce : The total times of trying hash function for satisfying difficulty.
hash : The output 64-digits string format which came from SHA-256(Secure Hash Algorithm 256-bit) hash function, inputs is the sequential collection of all data’s in block.

{
  "version":4,
  "index":1,
  "previousHash":"00000000000000000000000000000000000000000000000061bdff5e59b8ff4c",
  "timestamp":1724547179867,
  "data": {
    "reward":16.230218,
    "miner":"6c60b7550766d5ae24ccc3327f0e47fbaa51e599172795bb9ad06ac82784a92d",
    "transactions":[],
    "comment":"kokonut version 4"
    },
  "difficulty":6,
  "nonce":1502929,
  "hash":"000000f31571551dacab93769546843d2ef483fd0d26181fe8950de617b919ec"}

Genesis Block

It is called genesis block which follows below :

first block of chain
previousHash is “0”
reward is 0
miner is “0000000000000000000000000000000000000000000000000000000000000000”
transactions is empty
difficulty is 0
nonce is 0
hash isn’t made by SHA-256 Hash Algorithm. it is artificially generated.

Structure

{ 
  "version":4,
  "index":0,
  "previousHash":"0",
  "timestamp":1725108420520,
  "data":{
    "reward":0.0,
    "ticker":"KNT",
    "miner":"0000000000000000000000000000000000000000000000000000000000000000",
    "transactions":[],
    "comment":"Navigate beyond computing oceans"
   },
  "difficulty":0,
  "nonce":0,
  "hash":"000000000000000000000000000000000000000000000000190282d71244ac7a"
}

BlockChain

The connectivity of blocks.

Kovault

Kovalut is Database which use SQLite DBMS(DataBase Management System) software.

Proven Of Work

Validation Process

Check Miner
Check Index
Check Version
CHeck Difficulty
Check Hash

Calculate Hash

    fun calculateHash(): String {
        val input = "$version$index$previousHash$timestamp$data$difficulty$nonce"
        hash = MessageDigest.getInstance("SHA-256")
            .digest(input.toByteArray())
            .fold("") { str, it -> str + "%02x".format(it) }
        return hash
    }