DeFi & Staking

Learn how decentralized finance(DeFi) works from liquidity pools and AMMs to staking, yield farming, and restaking protocols.

Hash Functions in Web3 (SHA-256, Keccak-256, Merkle Trees)

Smart Contracts, DeFi & Staking /

Hash Functions in Web3: SHA-256, Keccak-256, Merkle Trees (Complete Guide) Hash functions are the quiet workhorses of crypto: they link blocks, derive addresses, shape storage, power proofs, and make commitments practical. This guide explains how SHA-256 and Keccak-256 behave, how Merkle trees and Ethereum tries commit to data, why domain separation matters, where developers accidentally […]

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Interoperability Protocols (Polkadot, Cosmos/IBC, Wormhole)

DeFi & Staking, Smart Contracts /

Interoperability Protocols: Polkadot, Cosmos IBC, and Wormhole Interoperability is not a buzzword. It is the engineering discipline of making one network safely accept evidence about another network, then act on it without breaking user expectations. This complete guide explains three major interoperability families: Polkadot with shared security and XCM, Cosmos with IBC light clients and

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Bridges and Cross-Chain Swaps (How Value Moves Between Chains)

DeFi & Staking, Smart Contracts /

Bridges and Cross-Chain Swaps: How Value and Messages Move Between Chains Bridges and cross-chain swaps are where crypto’s power and pain meet. They enable users to move assets and trigger actions across networks, but they also concentrate risk because you are trusting one chain to accept evidence from another. This complete guide explains bridge models

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Multisig Wallets (Safe/Gnosis) and MPC Overview

DeFi & Staking, Nodes, L1/L2, Rollups, Security & Best Practices, Smart Contracts /

Multi-sig Wallets and MPC: Shared Control Without Single Points of Failure Multi-sig and MPC solve the same human problem in different ways: one keyholder should not be able to drain a treasury, push an upgrade, or sign away an entire business by mistake. A multisig makes policy visible and enforceable on-chain. MPC splits signing power

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Stablecoins (USDC, DAI, Algorithmic Risks)

DeFi & Staking /

Stablecoins: USDC, DAI & Algorithmic Risks How different designs hold a peg, what can go wrong under stress, and a practical playbook for safer usage. TL;DR: Fiat-backed stables (e.g., USDC) hold off-chain reserves and rely on issuer redemptions and banking rails. Over-collateralized crypto stables (e.g., DAI) mint against on-chain collateral with risk parameters (fees, liquidation

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AMMs and DEXs (Uniswap, Curve)

DeFi & Staking /

AMMs & DEXs: Uniswap & Curve Explained Constant-product markets, concentrated liquidity, stable-swap curves, slippage, fees, and MEV. everything you need to trade or provide liquidity with confidence. TL;DR: AMMs price assets via math, not order books. Uniswap uses constant-product (x·y=k) and now concentrated liquidity; Curve optimizes for stable pairs with a low-slippage “stable-swap” curve. Mind

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Auditing and Testing (Foundry/Hardhat, fuzzing, static analysis)

DeFi & Staking, Security & Best Practices, Smart Contracts /

Auditing & Testing: From Unit Tests to Fuzzing & Invariants Ship with confidence: rigorous tests, automated checks, and structured reviews before mainnet. TL;DR: Use Foundry or Hardhat for unit/integration tests, add fuzzing/invariant tests, run static analysis (Slither), measure coverage, and follow an audit checklist with clear threat models. In this lesson Tooling Stack Foundry Example

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