Crypto
What Is a Hot Wallet? Hot vs Cold Storage
A hot wallet keeps crypto private keys on an internet-connected device for convenience, trading speed against exposure to online attacks.
Liam Chen
Liam Chen writes about how crypto works at the protocol level — consensus, cryptography, wallets and security. He explains mechanisms plainly and cites primary sources.
Crypto
What Is a Nonce in Blockchain?
A nonce is a number used once: in mining it is the value miners change to find a valid block…
Crypto
What Is a Crypto Faucet?
A crypto faucet dispenses tiny amounts of crypto or valueless testnet tokens for simple tasks; developer testnet faucets are its…
Crypto
What Is a Paper Wallet? How It Works & Risks
A paper wallet is an offline printout of your crypto keys; it removes online hacking risk but adds physical loss,…
Crypto
What Is a Soft Fork? Soft vs Hard Forks
A soft fork is a backward-compatible blockchain upgrade that tightens the rules, so old nodes still accept new blocks, unlike…
Crypto
What Is Proof of Authority (PoA)?
Proof of authority is a consensus model where a few pre-approved, identified validators produce blocks by staking their reputation, not…
Crypto
What Is a Vanity Address in Crypto?
A vanity address is a crypto address with a custom pattern; here is how they are made and the security…
Crypto
What Is a Replay Attack in Crypto?
A replay attack rebroadcasts a valid transaction on another chain; here is how it happens after a fork and how…
Crypto
What Is Tokenomics? How Token Economies Work
Tokenomics is the study of how a crypto token's supply, distribution and incentives are designed; here is what to look…
Crypto
What Is an NFT? How Non-Fungible Tokens Work
An NFT is a unique blockchain token that proves ownership of a specific item; here is how non-fungible tokens actually…