ARTIFACT_PATH

The path of the artifact JSON file of the VendingMachine smart contract

CONTRACT_ADDRESS

The address of the VendingMachine smart contract

PROVIDER_URL

CHAIN_ID

CLIQUE_PERIOD

The period of the Clique consensus algorithm

CLIQUE_EPOCH

The epoch of the Clique consensus algorithm

NODE_BALANCE

NODE_DATA_DIR

It is the directory where the node's data is stored

NODE_LISTEN_PORT

It is the port number the node uses for peer-to-peer communication

NODE_DISCOVERY_PORT

It is the port number the node uses for discovery protocol communication

MINER_ETHERBASE

It is the account address that mining rewards will be sent

BOOTNODE

It is the enode URL of the bootnode that this node will connect to during network initialization

SYNC_MODE

To specify the synchronization mode for the node

DATA_DIR

NODE_ADDRESS

MINER_THREADS

It is the number of CPU threads to use for mining

The external IP address of the node (in the form extip:<IP_ADDRESS>)

Building a Blockchain and Cryptocurrency from Scratch.jpg

exportDocker.tar.gz

ExtendVendingMachine

Compile

Deploy

Execute

StartNode

If you’re a beginner looking to get started in the world of blockchain technology, this course will provide you with the knowledge and skills you need to set up and run a private blockchain.

You’ll learn the foundations of blockchain technology, from cryptography to digital signatures. Then, you’ll cover more advanced topics such as consensus algorithms, decentralized applications, and cryptocurrency. You’ll delve into the Ethereum blockchain, learning to develop smart contracts and configure and start a blockchain node. You’ll finish with the creation of a private blockchain.

By the end of the course, you'll have a solid understanding of the technology and a great familiarity with the technical and practical aspects of a blockchain. As blockchain technology continues to gain popularity, the demand for skilled people in this field is expected to grow, making it an exciting and promising career path.

Building a Blockchain from Scratch Using Solidity and Ethereum

**(Select all that apply.)** What is true about the world state of a blockchain ledger?

(Select all that apply.) What is true about the world state of a blockchain ledger?

They contain a fixed number of transactions.

Which property describes “blocks” in a blockchain ledger?

Which property describes “blocks” in a blockchain ledger?

**(Select all that apply.)** Which elements are included in blocks?

(Select all that apply.) Which elements are included in blocks?

The number of transactions a node can add to a block.

It’s the way nodes agree on the next block to add to the chain.

It’s the process of validating a transaction.

It’s the way nodes agree on adding a new participant to the network.

It’s the mechanism nodes use to accept transactions.

An incremental number associated with blocks

An arbitrary number contributing to the hash of a block

The hash of the previous block in the chain

The way nodes agree on the block ordering

The process of issuing new coins from block validation

A digital asset tied to blockchain accounts

When nodes add transactions to a candidate block

When is the new cryptocurrency issued?

The mechanism that keeps cryptocurrency inflation in check

The process that prevents a blockchain fork

The mechanism that increases rewards for block mining

The process that gradually decreases the rewards coming from block mining

**(Select all that apply.)** What is the blockchain halving mechanism?

(Select all that apply.) What is the blockchain halving mechanism?

Test your knowledge of blockchain and cryptocurrency concepts.

Introduction

Cryptography

Blockchain Fundamentals

Cryptography and Blockchain Exam

Ethereum Basics

Ethereum Exam

Blockchain Development

Develop a Voting System Smart Contract

Build Your Blockchain

Conclusion

Quiz: Blockchain Fundamentals

Blockchain ledger knowledge check

Consensus mechanism knowledge check

Cryptocurrency knowledge check