The Complete DeFi - Decentralized Finance - Industry Labs

Explore how decentralized finance removes intermediaries using blockchain, smart contracts, and permissionless networks to enable direct lending, insurance, and other financial services.

Discover how decentralized finance enables direct lending and borrowing via on-chain smart contracts, with collateral like Ethereum and stablecoins such as Dai or Usdc on MakerDAO and Aave.

Compare centralized exchanges and decentralized exchanges, noting custody and intermediaries on CEXs versus self-custody and smart contracts on DEXs, with liquidity pools and a wide range of tokens shaping choices.

Learn how stablecoins maintain value by pegging to real-world assets, via fiat reserves, commodity or crypto collateral, with examples like Tether, USDC, Dai, and gold-backed variants.

Learn how UST and Luna, created by TerraForm Labs, used mint and burn mechanics to peg to the dollar, and study the 2022 collapse and its risk implications.

Explore what tokens are in decentralized finance, how Ether and Bitcoin fuel networks and gas fees, and why tokens serve as investments, with volatility, risk, and potential for diversification.

Explore whether cryptocurrencies are securities, examine how the SEC defines investment contracts, and compare Bitcoin as a commodity with tokens governed by central issuers and evolving regulatory guidance.

Explore how the ERC-20 standard defines fungible digital assets and tokenized smart contracts on the Ethereum network. See how tokens extend to sidechains and bridges across ecosystems.

Compare fungible ERC20 tokens with non-fungible ERC721 assets and see how NFTs enable one-of-one digital ownership and value in DeFi.

Explore real life NFT case studies, including Cryptopunk 7804's 7.6 million sale and a cautionary rug pull, to connect theory with decentralized finance, smart contracts, and ERC 20 basics.

Explain the difference between proof of work and proof of stake, highlighting miners solving puzzles in PoW and validators staking crypto to add blocks in PoS.

Explore Polygon’s proof-of-stake sidechain architecture across Bore, Heimdall, and the smart contracts layer, with Bore producing blocks and the Ethereum virtual machine executing Solidity bytecode.

Explore Heimdall, a Polygon component that performs checkpointing for the layer 2 chain, consolidates blocks generated by Borr into checkpoints, hashes them, and publishes to Ethereum for faster transmission.

Understand how Polygon uses Ethereum main net smart contracts, including the Matic token, with token swaps and checkpoints linking Polygon architecture to Ethereum.

Explore the anti defi concept and cbdcs, and how centralized finance and decentralized finance shape society and the economy through technological changes.

Learn about central bank digital currencies, digital cash issued by a central bank, and how they differ from cryptocurrencies while enabling faster, secure payments on a digital ledger.

Explore why CBDCs offer a trusted, regulated alternative to traditional money by augmenting digital practices and contrasting CBDCs with cryptocurrencies and stablecoins.

Explore the roots and emergence of CBDCs, from Bitcoin's blockchain revolution to central banks' pursuit of digital money, stablecoins, and inclusive digital payments.

Discover how central bank digital currencies enable programmable money for monetary policy and financial inclusion, while weighing privacy, cyber security, and transition risks.

Explore the money flow in modern finance by examining four pillars—issuer, form, accessibility, and technology—and how central banks, digital or physical money, and token or count-based systems shape it.

Explore the differences between token-based and account-based money and examine central bank digital currencies, including general purpose CBDCs for retail use and wholesale-only tokens for interbank settlements.

Explore general purpose retail CBDCs built on distributed ledger technology, offering anonymous but traceable 24/7 access via digital wallets, and examine wholesale CBDCs for banks as bearer tokens enabling settlements.

Spurring central banks to act, the pandemic accelerated cbdc exploration as nations launch pilots and full launches, led by China's digital yuan and the Bahamas' sand dollar.

Compare cbdcs and crypto: crypto is decentralized, while cbdcs are centralized and disclose data to authorities. Clarify cbdcs' role: they focus on payments with investing limits; crypto enables transactions.

Compare Bitcoin's decentralized, regulation-light model with CBDCs as government-backed digital currencies, and analyze their impact on DeFi, stablecoins, Ethereum, Polygon, layer twos, and financial inclusion.

Learn hands-on smart contract deployment with ERC-20 tokens, explore transfer and transfer-from functions, and understand approval mechanisms, using Replit as a free browser-based IDE.

Set up Metamask in your browser and create a wallet with a recovery phrase. Explore Replit templates and deploy smart contracts on the Polygon Mumbai testnet using test tokens.

Set up Metamask with the Polygon Mumbai testnet using Infura, add the network manually, and configure the RPC URL to cover gas fees when deploying smart contracts in DeFi labs.

Fork a starter project from Polygon docs, connect MetaMask to Matic, and explore OpenZeppelin ERC20 templates to learn smart contracts and token deployments on Replit.

Learn to transfer matic test tokens on the polygon network, cover gas fees, connect metamask to the Mumbai testnet faucet, and deploy and interact with smart contracts in DeFi labs.

Deploy your first smart contracts on the matic Mumbai testnet using erc20, savings, and manager contracts with the deploy button; explore the Openzeppelin library and solidity code to understand basics.

Deploy an erc-20 token contract on Polygon Mumbai, obtain its address, verify it on a blockchain explorer, and attach the token address to the savings account contract via Metamask confirmations.

Deploy and connect three smart contracts in a hands-on DeFi flow: an ERC-20 token, a savings contract, and a manager contract, with real addresses and OpenZeppelin usage.

Learn how to add a custom erc20 token to metamask by importing its contract address, confirming the symbol TSTO and 18 decimals, and preparing to mint tokens.

Explore how ERC-20 minting works through the public mint function and impact on balance and total supply. Examine access control designs, with Polygon's fixed supply and Ethereum minting vs mining.

Mint tokens by applying 18-decimal units in solidity, converting fractional amounts to whole numbers in a test mint. Learn tokenomics basics, including minting, burning, total supply, and transferFrom in DeFi.

The transferFrom function lets a spender move tokens on your behalf under ERC20. It uses an approved, nested mapping allowance, enabling dexs and DeFi use cases.

Complete final lab by deploying and interacting with three smart contracts: the ERC 20 token, savings account, and wallet, and see how decentralized finance moves tokens through an approval flow.

Explore the Ethereum virtual machine as the execution layer for NFT smart contracts. See how code is compiled into a portable, isolated environment that separates hosts and enables secure deployments.

Explore what smart contracts are and how they encode terms for NFTs and cryptocurrency using Solidity, the most widely used language for Ethereum contracts.

Explore how Solidity compiles to EVM opcodes, a stack-based bytecode system powering contract execution, with memory, storage, and push opcodes, noting that learning opcodes is not necessary here.

Explore how Ethereum smart contracts use memory and storage as a public database, with the EVM's 1024-item stack, reading for free and paying gas to write.

Explore how advanced opcodes empower the EVM to compute almost anything, showing there are hundreds of opcodes and a one-byte limit that still enables it.

Explore zero knowledge proofs (zkp) and interactive proof systems, where a prover convinces a verifier they know a secret without revealing it. Apply to privacy preserving computation and blockchain.

Learn how zero-knowledge proofs enable proving facts without revealing data in blockchain, and how polygon zk rollups aggregate off-chain transactions for fast, secure Ethereum finality.

Polygon zkp defines the xcp specification with its required format and verifier-prover challenges, which Ethereum checks to validate xcp rollups and push transactions to the EVM.

Examine zk proofs and the polygon zk EVM as an EVM‑equivalent platform that lowers costs, boosts throughput, and enables deploying contracts and bridging assets to Ethereum via SSC EVM RPC.

Explore the basics of decentralized applications, contrasting traditional centralized apps with peer-to-peer dapps and the future implications of decentralization for technology and data.

Explore how dapps aim to cut out the middleman by connecting service providers and customers. Using Uber as an example, compare dexes like Uniswap to traditional exchanges such as Coinbase.

Explore how dapps operate on a peer-to-peer blockchain, enabling direct user interactions without a central authority. Understand public ledgers, cryptographic tokens, and open source fundamentals, including NFTs.

Explore the benefits of dapps, including censorship resistance, downtime resilience, and easier DeFi integration. Open source fundamentals enable developers to build better systems through visibility and continual improvements.

Examine open-source dapps' vulnerabilities and hacker risk from public visibility. Discuss how suboptimal ui/ux and weak network effects impact security, user experience, and scalability.

Explore real-world dapps through State of the Dapps, seeing Ethereum rankings and projects like OpenSea, Uniswap, and Decentraland. Learn how wallets, oracles, stablecoins, and open standards shape decentralized apps.

Explore how OpenSea functions as a decentralized NFT marketplace, detailing smart contracts, buyer and seller matching, minting, asset distribution, and settlement on Ethereum or Polygon.

Explore the current landscape of dapps and the key challenges—scalability, security, and ui/ux—and learn how developers can overcome them to drive the rise of decentralized applications.