Topic
EthereumBeginnerA field-by-field Etherscan walkthrough using a real transaction: status, block, value, gas, input data, logs and token transfers. Learn to tell failed from pending and dropped, spot token approvals, check a contract, and read other chains' explorers.
#basics#gas-&-fees#transactions
GeneralTokenomics sets how many tokens exist, who gets them and when, and what ties them to demand. Learn circulating, total and max supply, market cap vs. FDV, how vesting and cliffs work, using Arbitrum's real unlock, plus a checklist for reading any token.
#basics#markets#tokens
GeneralBeginnerA centralized exchange holds your crypto and matches trades on its own systems, while a decentralized exchange lets you swap from your own wallet. Compare order books and AMMs, custody, KYC, fees and real failures such as FTX, with a decision guide.
#basics#defi#security
EthereumBeginnerEthereum is a programmable blockchain that runs smart contracts, while Bitcoin is built mainly as fixed-supply digital money. Compare their accounts and UTXOs, the EVM, monetary policy, proof of stake and proof of work, and upgrade styles.
#basics#smart-contracts#staking
GeneralBeginnerA blockchain is a shared ledger kept in sync by independent computers. Follow one Bitcoin payment from signature to finality, and learn how hashes, nodes and consensus make records hard to rewrite, and when a normal database is the better choice.
#basics#consensus#cryptography
GeneralBeginnerDeFi provides financial services — trading, lending, borrowing — through public smart contracts instead of banks. It's permissionless, non-custodial and composable, with borrowing secured by over-collateralisation rather than credit checks, and no safety net if code fails.
#basics#defi#stablecoins
EthereumBeginnerA smart contract is code stored on a blockchain that runs automatically and is enforced by the whole network. It holds its own funds and rules, executes deterministically on every node for a gas fee, and powers tokens, DeFi, NFTs and DAOs — bugs and all.
#basics#dapp-development#smart-contracts
GeneralBeginnerAn NFT is a unique token that records ownership of a specific item on a blockchain. The on-chain record of who owns which token is secure, but the image usually lives off-chain — and buying one gives you the token, not automatically the copyright or the file.
#basics#nfts#tokens
EthereumBeginnerGas fees pay a blockchain to process your transaction, measured as gas used times gas price. Since EIP-1559 the price splits into an automatic base fee that's burned plus a priority tip, and it rises and falls with how full blocks are.
#basics#gas-&-fees#transactions
GeneralBeginnerA wallet stores the keys that control your coins, not the coins themselves. Custodial means a company holds those keys for you; self-custody means you hold them, with full control and full responsibility — captured by the phrase 'not your keys, not your coins'.
#basics#security#wallets
GeneralBeginnerDePIN networks use tokens to get people to run real hardware like hotspots, storage and GPUs. Contributors earn token emissions plus usage fees once the network can verify their work, often via burn-and-mint models.
#basics#mining#tokens
