Information you need or don't need about web 3

Layer 2 🧩 Additional layers built on top of the main blockchain, making transactions faster and cheaper. “Side roads that ease Ethereum’s traffic jam.” Example: @arbitrum, @Optimism, @zksync.
zk-Rollup (Zero-Knowledge Rollup) 🔒 A solution that bundles multiple transactions into one and records it on the main chain, combining privacy and scalability. “The wizard who knows everything but tells nothing.”
MEV (Maximal Extractable Value) 🚨 The extra profit miners or validators can make by reordering transactions. “If the block producer sneaks in their cousin’s transaction first: that’s MEV.”
Flash Loan Borrowing without collateral, provided it’s repaid within the same block. “If you’re smart enough, one line of code could make you millions… but the risk is huge.”
Reentrancy Attack 🐛 A hack where someone repeatedly re-enters a smart contract to drain funds. “Leave the door open, and keep going back inside to steal money!”
Tokenomics 📊 The economic model of a token: supply-demand balance, distribution, vesting periods, etc. “The hidden economics class behind a coin.”
Liquidity Pool (LP) 💧 A pool where users lock tokens to provide liquidity for swaps. “Like an exchange vault: you put tokens in, trades happen, and you earn fees.”
Slippage The difference between the expected price and the executed price. Hurts especially in low liquidity. “The risk of moving the price with a single click in a low-volume coin.”
Wrapped Token (e.g., WBTC) 🎁 A tokenized version of an asset on another chain. The original is locked, and you use its wrapped copy elsewhere. “The indirect, packaged way of using BTC on Ethereum.”
Impermanent Loss When a liquidity provider ends up with less value due to price fluctuations of the pooled tokens. “If your coins don’t stay put, providing liquidity could turn into a loss.”

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Information you need or don't need about web 3 - 15

💥 The Biggest Losses in Crypto History Several major events have caused massive financial damage, shaken investor confidence, and reshaped the crypto landscape. Here are some of the most notable ones: 🔥 1. Mt. Gox Hack (2014) Loss: ~850,000 BTC (worth billions of dollars today) What happened? At the time, Mt. Gox was the largest Bitcoin exchange. It was hacked and eventually went bankrupt. Impact: A huge blow to trust in Bitcoin. Prices plummeted. 🔥 2. Terra / LUNA Collapse (2022) Loss: Be...

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Information you need or don't need about web 3 - 1

BTC vs ETH Inflation Bitcoin (BTC) Maximum supply: 21 million BTC Current supply increase: Bitcoin block rewards (new BTC issuance) halve approximately every 4 years (“halving”) Annual supply increase as of 2025: Around 1.7% Inflation trend: Decreasing over time because block rewards diminish. By around 2140, all BTC will be mined, and inflation will approach 0% Ethereum (ETH) Maximum supply: Unlimited (theoretically no upper limit) Supply increase: With Ethereum 2.0 and EIP-1559, a “burn mec...

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Information you need or don't need about web 3 - 11

90% of “Flash Loan” attacks are not hacks in the technical sense, but rather actions carried out within the rules of the smart contract system itself. --- 📌 What does this mean? A flash loan allows users to borrow funds without collateral as long as the loan is borrowed and repaid within the same transaction block. The system prevents funds from being withdrawn before the transaction is completed. However, malicious actors can exploit this mechanism by manipulating price feeds or market dyna...

Layer 2 🧩 Additional layers built on top of the main blockchain, making transactions faster and cheaper. “Side roads that ease Ethereum’s traffic jam.” Example: @arbitrum, @Optimism, @zksync.
zk-Rollup (Zero-Knowledge Rollup) 🔒 A solution that bundles multiple transactions into one and records it on the main chain, combining privacy and scalability. “The wizard who knows everything but tells nothing.”
MEV (Maximal Extractable Value) 🚨 The extra profit miners or validators can make by reordering transactions. “If the block producer sneaks in their cousin’s transaction first: that’s MEV.”
Flash Loan Borrowing without collateral, provided it’s repaid within the same block. “If you’re smart enough, one line of code could make you millions… but the risk is huge.”
Reentrancy Attack 🐛 A hack where someone repeatedly re-enters a smart contract to drain funds. “Leave the door open, and keep going back inside to steal money!”
Tokenomics 📊 The economic model of a token: supply-demand balance, distribution, vesting periods, etc. “The hidden economics class behind a coin.”
Liquidity Pool (LP) 💧 A pool where users lock tokens to provide liquidity for swaps. “Like an exchange vault: you put tokens in, trades happen, and you earn fees.”
Slippage The difference between the expected price and the executed price. Hurts especially in low liquidity. “The risk of moving the price with a single click in a low-volume coin.”
Wrapped Token (e.g., WBTC) 🎁 A tokenized version of an asset on another chain. The original is locked, and you use its wrapped copy elsewhere. “The indirect, packaged way of using BTC on Ethereum.”
Impermanent Loss When a liquidity provider ends up with less value due to price fluctuations of the pooled tokens. “If your coins don’t stay put, providing liquidity could turn into a loss.”