Blockchain Solidity Developer Course - Zero to Advanced

Explore Solidity visibility concepts, including public, internal, external, and the pure and view functions, and see how deployment reveals or hides variables and controls access.

Explore Solidity structs to define a user and a car as nested data structures, with fields like name, address, brand, and model, and learn how to create and deploy them.

Explore how mapping provides a key-value data structure linking each address to a balance, with deposits, withdraw, and payable transfers controlled by the message sender.

Compare fixed-size and dynamic arrays, where fixed arrays have a predetermined length, while dynamic arrays grow with push operations, and support read by index and pop.

Master storage and memory in solidity by comparing on-chain storage for permanent contract state with memory for temporary data during function calls, and noting gas implications.

Explore how revert, assert, and require function as Solidity error handling mechanisms to validate conditions and revert state changes, with examples showing preconditions, error messages, and internal checks.

Explore how constructors initialize contract state during deployment and how modifiers enforce access control with an only owner check, using message sender and underscore placeholders.

Learn how events and emit log contract actions and state changes for off-chain apps and contracts. Emitted logs appear in transaction receipt and support querying with message, number, and address.

Explore Solidity inheritance and imports by using a base contract with add, subtract, multiply, and divide functions and a derived contract that overrides them with virtual keywords for unsigned integers.

Learn how to define and use interfaces in Solidity to specify external function signatures, enable cross-contract communication, and enforce consistent interactions between contracts through a blueprint-like interface.

Download MetaMask extension for iOS or Android, copy your address, keep your 12 secret words, and switch to Sepolia or Goerli test networks to request free test ether.

discover three ways to verify contracts on etherscan, including automatic verification with an API key and manual ABI and constructor-argument encoding.

Explore hardhat, the Ethereum development environment for editing, compiling, debugging, and deploying smart contracts and dapps, and learn to set up a JavaScript project on localhost.

Connect to an Ethereum provider to interact with the blockchain, enabling queries, transactions, and event listening via Infura's Web3 API on Sepolia and Goerli test nets.

Explore how to read and write data from an Ethereum smart contract using MetaMask, including importing an LST token, querying name, symbol, total supply, and executing transfers with web3.

Explore how non-fungible tokens establish ownership of unique digital assets, from artwork to virtual real estate, and learn the ERC-721 and ERC-1155 standards.

Explore metadata standards that enrich digital assets on smart contracts by defining name, description, image URL, and attributes for marketplaces like OpenSea, using JSON files and Pinata uploads.

Set up an ERC-721 A NFT contract with OpenZeppelin in Hardhat, enable minting multiple tokens near the cost of one, and configure IPFS/Pinata URIs and max supply.

Learn to implement ERC-721 minting with modifiers, mint price control, and supply limits using OpenZeppelin, covering token ownership and minting logic.

Learn to implement an ERC-721 NFT contract in Solidity, focusing on token URI and base URI handling, starting token IDs at 1, and owner-only updates for price and withdrawals.

Design the hardhat config file, set networks and api endpoints, enable etherscan verification, and craft deploy and verification scripts using hardhat and truffle dashboards.

Create a new react app with npx, set up a front-end using assets and abi.json for an NFT minting page, and style with flexbox.

Design and implement a front-end interface for a blockchain minting app, featuring a name box, mint container with plus/minus controls, wallet connection, and mint button, to interact with smart contracts.

Connect the wallet and smart contract with Web3, import abi and address, and read name, symbol, total supply, and max supply; implement mint with price and state management in React.

Mint NFTs by interacting with a Solidity contract via ABI in a Remix environment, connect wallets, call the minting function, and review contract address, token IDs, and holders.

Build the front end with npm run build, publish via the file manager, and connect wallets with ethers to interact with NFTs and withdraw funds as the contract owner.

Discover DeFi, the decentralized, permissionless alternative to traditional finance, and see how staking, yield farming, and liquidity mining secure networks and power decentralized exchanges and token rewards.

Set up project folders, open and edit smart contracts in Visual Studio, install OpenZeppelin, and prepare a token and listings contract for the Lestonz Dex.

Explore building a DeFi smart contract with imports, time period control, and cumulative market volume tracking, including open positions, price alerts, and reward handling.

Implement an open position function in a Solidity smart contract for DeFi, validating ERC-20 tokens, checking approvals and balances, and calculating rewards using last reward time and cumulative trader volume.

Learn to write tests for solidity contracts by importing dependencies, deploying reward and token factories, and validating constructor parameters, balances, and token supply using hardhat test patterns.

Write Test Part 3 focuses on validating trader balances, cumulative market volumes, and rewards token through async constants, asserting before and after trade states, and preparing deployment script steps.

Create and deploy smart contracts using deployment scripts, configure constants and contract arguments, deploy rewards token and a dex, and prepare tests for verification.

Deploy smart contracts using truffle and hardhat, configure package.json and scripts, and verify deployments with constructor arguments for token contracts.

Practice online testing of Solidity contracts by simulating token approvals, transfers, and open positions with MetaMask, while inspecting contract data like cumulative market volume and total price tokens.

Develops a supply chain smart contract for medicine tracking, defining medicines, stock, and patient tickets, with roles for government, doctors, pharmacies, and patients.

This lecture explains the ERC-1155 NFT contract pattern using OpenZeppelin, covering mint and batch mint, burn functions, and token URI management on testnets with IPFS.

Map the blockchain developer roadmap for web3, covering essential web technologies, smart contracts with Solidity, cross-chain languages like Rust and Go, and core tools from IPFS to Moralis.