Block-Chain

Block chain is a distributed database that maintains the records of transactions. It can be used to store

Block-Chains

block.go

In this file , we have created one block class that holdes multiple elements

Element of Block class

1. timestamp : that help me to store the time record of each block
2. nonce : nonce is helpful to know that that block is correct or not
3. previousHash: previous hash represent the previous block in form of hash
4. transactions: transactions is useful for all the transactions.

Block. There is a few methods/functionality using for block.

FUNCTIONALITY OF BLOCK

1. NewBlock create a new Block. That helps to create a new block in our block chain.
2. Print that helps to print the block in our blockchain
3. Hash Hash a block using SHA256. this functionality helps to generate a hash for store in new block.
4. MashalJSON it's a overridden method that helps you for marshal json. also help for print block into json format. It's helps to stringify the block through JSON format then we can able to convert into HASH
5. Nonce : this functionality is used for retrive the value of nonce from particular block.
6. PreviousHash : this functionality is used for retrive the value of previous hash from particular block.
7. Transactions : this functionality is used for retrive the values of transactions from particular block.
8. UnmarshalJSON it's a overridden method that helps you for Unmarshal json. also help for print block into json format. It's helps to stringify the block through JSON format then we can able to convert into HASH

chain.go

It's a file in which we are just create a classes

Block. There is a few methods/functionality using for block. FUNCTIONALITY OF BLOCK

1. NewBlock create a new Block. That helps to create a new block in our block chain.
2. Print that helps to print the block in our blockchain
3. Hash Hash a block using SHA256. this functionality helps to generate a hash for store in new block.
4. MashalJSON it's a overridden method that helps you for unmarshal json. also help for print block into json format. It's helps to stringify the block through JSON format then we can able to convert into HASH

Transactions. There is a few methods/functionality using for transactions. FUNCTIONALITY OF transactions

1. NewTransaction create a new Transaction for a blockchain.
2. Print print a transactions. That helps to print about the transaction
3. MashalJSON it's a overridden method that helps you for Un-marshal json. It's help to convert into JSON format.It will help us to convert our object into JSON format.

Chain.

It's our Chain(Block-chain) class. that holds 2 things

1. list of blocks
2. list of transactions
3. blockchainAddress : that is a address one person. it's a block-chain address. FUNCTIONALITY OF BLOCK-CHAIN

1. NewChain create a new Blockchain. That helps to create a new blockchain.This function helps to add a new block . Also passing the blockchain address as argument.
2. LastBlock that helps to know the last block of our chain.
3. Print that helps to print the entire blockchain with blocks with Block's transactions
4. AddTransaction that helps to adding the transactions into the blockchain.
5. VerifyTransactionSignature this is very important functionality for block chain transactions because we need to verify the transaction is done by authentic person
6. CopyTransactionPool that help to copy the entire transaction of Blockchain
7. ValidPoof there is concept nonce we need to find the nonce. there is difficulty index that help if use consensus algo and getting zero inital to till difficulty that means that the nonce for next block
8. ProofOfWork in this function we need to check nonce value is correct or not.
9. Mining is the method for miner who really find the nonce and transfer money from one to another person CalculateTotalAmount this function help to know which person have how much amount in the wallet

Wallets

wallet.go

Wallet

Wallet this class helps with private key and public key along with blockChainAddress.This is wallet indvidual. One wallet for one person
FUNCTIONALITY OF Wallet

1. NewWallet this is the functionality to create a new Wallet into block-chain
2. NewWallet this is the functionality to create a new Wallet into block-chain. There is algo to create address of blockchain.
3. PublicKeyStr that helps you get publickey of particular wallet into string format
4. Publickey that helps to get Public key with encrypted data of particular wallet
5. PrivateKey that helps to get Private key with encrypted data of particular wallet
6. PrivateKeyStr that helps to get privateKey string of particular wallet
7. BlockchainAddress : this helps to get blockchain address of particular wallet

Transactions

Transaction this use for wallet's transaction in which we required

1. senderPrivateKey : that helps to miner for verify the sender's authentications
   
2. senderPublicKey : its helps for encryption of transactions into block-chain
   
3. senderBlockchainAddress : this is sender block chain address that helps to take money from this block-chain address
   
4. recipientBlockchainAddress : this is use for recevier address. in which money will be transfered
   
5. value : how much amount transfer from one account to another

FUNCTIONALITY OF Transaction

1. NewTransaction it's give transaction object with Privatekey, publicKey , sender and recipient with value.
2. GenerateSignature that helps to added transaction and helps to put a signatures of transaction. Encryption using SHA256 and then sign using ECDSA
3. MarshalJSON It's a overidden method.It's helps to convert into json from golang object and converting into bytes.

Signature

signature.go

Signature This file use for singnature our wallet. This help to verfiy our signature.
FUNCTIONALITY OF Signature

1. String that function help to return the signature R and S.

Functionality

In version 3.0 we have Hash value in string instead of sha256 encoding. also added lot's of things like wallet concept is there and Utils pkg there that help to know the signatures public signature and private signate