^{The Thunderbolt logo is licensed under Creative Commons 3.0 Attributions license}

Thunderbolt is a peer-to-peer trustless digital currency implemented from scratch in Java. The project is inspired by Bitcoin and was created as a learning tool for understanding the blockchain technology.

NOTE: Currently the cryptocurrency network is down.

Specifications

Specification	Value
Protocol	PoW (proof of Work)
Algorithms	SHA-256
Blocktime	10 minutes
Total Supply	21.000.000 THB
RPC port	9567
P2P port	8332

Download

Download the Thunderbolt Node, CLI, Wallet and Miner for your target OS from:

- Download Linux v1.0.SNAPSHOP

- Download Windows v1.0.SNAPSHOP

The release includes 4 applications.

• The Node Application: This application runs the P2P protocol and all the blockchain related business logic (consensus rules, persitense of block and transactions etc.). The node application also serves as an JSON-RPC service (at port 9567 by default), other application can send request to the RPC service to query data from the blockchain or make the node execute commands like sending blocks, making transactions and in general managing the peers we are connected to. This node application must be started first, as the wallet, cli and miner application all rely on the node RPC server to work.

• The CLI: The command line interface application allows the user to query and execute commands on the node using the command line.

• The Wallet: The wallet allows you to keep track of your balance and transactions. You can also transfer funds to other addresses, dump your keys and encrypt your wallet.

• The Miner: The miner application will mine blocks using the CPU or a specific ASIC miner (The GekkoScience NewPac 130Gh/s+ because is what I had at hand).

Node

The node can be stearted as a background process using the "start-node.bat/sh" script or as a simple program using the "run-node.bat/sh":

The node application will add a system tray icon on operating systems that support it.

You can stop the node either by clocking on the stop option of the tray icon:

or by simply calling the stop command on the CLI:

thunderbolt-cli.sh stop

In Windows you can also just click the script icon "stop-all.bat" and it will close the node application and the wallet software if open.

CLI Commands

The CLI application has the following command available:

USAGE: thunderbolt-cli.sh <command> [params]

Command	Description	Arguments
getUptime	Returns the total uptime of the server.	NONE
getConfirmedTransactions	Gets all the confirmed transactions related to the node wallet.	NONE
banPeer	Bans a peer for 24 hours.	NETWORK_ADDRESS
getBestBlockHash	Returns the hash of the best (tip) block in the longest blockchain.	NONE
getPeerInfo	Gets all the information regarding a peer.	NETWORK_ADDRESS
backupWallet	Backups the wallet.	BACKUP_WALLET_PATH
getAddress	Gets the address of the wallet.	NONE
getBlockCount	Returns the number of blocks in the longest blockchain.	NONE
isWalletUnlocked	Gets whether the wallet is unlocked or not.	NONE
getPendingTransactions	Gets all the pending transactions related to the node wallet.	NONE
getUnspentOutput	Gets the unspent output that matches the given transaction id and index inside that transaction.	TRANSACTION_ID INDEX
getTransaction	Gets the transaction with the given hash.	TRANSACTION_HASH
sendToAddress	Transfer funds from the current node wallet to the specified address.	RECIPIENT ADDRESS AMOUNT
getPeerCount	The number of peers connected to this node.	NONE
getBlock	Gets the block with the given hash.	BLOCK_HASH
getTransactionPoolCount	Gets the number of transactions currently sitting in the transaction pool.	NONE
encryptWallet	Encrypts the wallet with 'passphrase'. This is for first time encryption.	PASSPHRASE
getInfo	Returns an object containing various state info.	NONE
getPendingBalance	Gets the specified address pending balance. If no address is specified. The pending balance of the current active wallet is returned.	ADDRESS optional
isWalletEncrypted	Gets whether the wallet is encrypted or not.	NONE
addPeer	Adds a new address to the pool.	NETWORK_ADDRESS
getPublicKey	Gets the public key of the wallet.	NONE
getTransactionPoolSize	Gets the size of the transaction pool in bytes.	NONE
GetTransactionMetadataCommand	Gets the metadata for this transaction.	TRANSACTION_HASH
listBannedPeers	Gets all banned peers.	NONE
lockWallet	Locks the wallet if it is encrypted.	NONE
disconnectPeer	Disconnects a currently connect peer from the node.	NETWORK_ADDRESS
getBalance	Gets the specified address balance. If no address is specified. The balance of the current active wallet is returned.	ADDRESS optional
stop	Stops the server.	NONE
unlockWallet	Unlocks the wallet if it is encrypted.	PASSPHRASE
getBlockHeader	Gets the block header of the block with the given hash.	BLOCK_HASH
unbanPeer	Lift a ban from a peer.	NETWORK_ADDRESS
listPeers	Lists all connected peers.	NONE
getPrivateKey	Gets the private key of the wallet.	NONE
getDifficulty	Returns the proof-of-work difficulty as a multiple of the minimum difficulty.	NONE
getTotalBalance	Gets the amount of coins in circulation (spendable).	NONE
removePeer	Removes an address from the storage.	NETWORK_ADDRESS
getNetworkAddress	Gets our current public address.	NONE

Wallet

The wallet software allows you to keep track of transactions and transfer funds among other things:

Miner

The miner software can mine on the CPU or on a particular ASIC miner, if set to mine by using tthe CPU (default) it will start a mining thread for each core of the CPU and it will divide the nonce range accordingly.

The only ASIC miner that is currently supported is the GekkoScience NewPac 130Gh/s+ since it was what I had in hand.

To run the miner:

run-miner.sh

And to run the miner with the Gekko:

run-miner.sh asic

Build

The project was created with IntelliJ IDEA but any build environment with Maven and the Java compiler should work.

To build manually, create the executable with:

 mvn clean package

License

Thunderbolt is released under the terms of the MIT license. See LICENSE for more information or see https://opensource.org/licenses/MIT.