Ethereum
How Ethereum runs smart contracts and processes transactions, what you pay in gas, and how to send tokens on mainnet without costly mistakes.
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EthereumBeginnerHow to compare Ethereum with other blockchainsWork through Ethereum's consensus, costs, speed and smart-contract support one chain at a time, then save dated notes and secure a research wallet.
Vahe Hakobyan3 min readRead guide
All Ethereum guides
Every guide in this topic, labelled by level.
EthereumBeginnerIs Ethereum a cryptocurrency? What ether is used forYes, Ethereum is a cryptocurrency platform, and ether (ETH) is the coin that pays its transaction fees and runs apps on a proof-of-stake blockchain.3 min read · Updated Oct 5, 2026
EthereumIntermediateTRC-20 vs ERC-20: which USDT network should you useWhich USDT network you use depends on your wallet and exchange. TRC-20 runs on Tron and pays fees in TRX; ERC-20 runs on Ethereum and pays in ETH.3 min read · Updated Oct 6, 2026
EthereumBeginnerHow to send tokens on Ethereum mainnet safelySending tokens on Ethereum mainnet takes ETH for gas, a correct address and the token's contract. Save the transaction hash after the transfer confirms.3 min read · Updated Oct 6, 2026
EthereumBeginnerHow to check Ethereum mainnet transaction feesCheck Ethereum mainnet fees on a block explorer or in your wallet. Read the base fee and priority fee, confirm the network, and save the receipt.3 min read · Updated Oct 6, 2026
EthereumBeginnerHow to verify an Ethereum mainnet transactionYou verify an Ethereum mainnet transaction by searching its hash in a block explorer and checking the status, from, to, value, and gas fee. Then save it.3 min read · Updated Oct 6, 2026
EthereumBeginnerWhich tokens can you transfer on Ethereum mainnet?You can transfer ether and tokens built on ERC-20, ERC-721, or ERC-1155 on Ethereum mainnet. Your wallet must hold ETH to pay gas for the transfer.3 min read · Updated Oct 6, 2026
EthereumBeginnerHow Ethereum processes a transactionEthereum checks your signature, runs EVM code and adds the transaction to a block. Validators order, execute and attest finality. The base fee is burned3 min read · Updated Oct 6, 2026
EthereumBeginnerWhat are the main risks of using Ethereum?Ethereum transfers are irreversible, and losses usually come from scams, bugs, and user error. SEC staking enforcement actions show legal risk.3 min read · Updated Oct 6, 2026
EthereumBeginnerHow to evaluate Ethereum activity step by stepYou can evaluate Ethereum activity with a block explorer by reading transaction pages and network metrics. Check approvals and tax records too.3 min read · Updated Oct 6, 2026
EthereumBeginnerHow to compare Ethereum with other blockchainsWork through Ethereum's consensus, costs, speed and smart-contract support one chain at a time, then save dated notes and secure a research wallet.3 min read · Updated Oct 6, 2026
Questions
Short answers to what people ask most.
Ethereum is a blockchain. Its native cryptocurrency is ether (ETH), which pays for gas and is staked to secure the network.
Gas is the fee paid in ETH to process a transaction. The base fee part is burned, and the total rises when the network is busy.
You need ETH for gas, the correct receiving address and the token's contract. Save the transaction hash and check it in a block explorer afterwards.
ERC-20 is the token standard on Ethereum and TRC-20 the one on Tron. The same coin, such as USDT, exists on both, but a transfer must stay on one network.
Fees can spike when the network is busy, smart contracts can have bugs, and a transaction sent to a wrong address or network cannot be reversed.