Bitcoin, crypto history, and blockchain.
Test your knowledge with these top questions!
The Bitcoin network, a decentralized system, halves mining rewards periodically to achieve what goal?
This programmed reduction occurs roughly every four years, slowing the creation of new coins to mimic the increasing scarcity of physical commodities like gold.
Ethereum's "Merge" upgrade cut its energy use by about 99% by adopting what system?
Proof of stake replaces power-hungry mining rigs with validators who lock up coins as collateral, so the network barely draws electricity.
The foundational Bitcoin software limits the total coin supply to 21 million to create what effect?
The protocol hardcodes this limit to prevent fiat-style devaluation, though the final fraction of a coin is not expected to be mined until roughly the year 2140.
Which Ethereum component executes a smart contract's bytecode when a transaction calls it?
A transaction supplies the trigger; Ethereum nodes run the Ethereum Virtual Machine (EVM) to execute the contract's bytecode.
May 22, known as Bitcoin Pizza Day, celebrates a famous 2010 food order to mark what milestone?
Programmer Laszlo Hanyecz traded 10,000 bitcoins, worth roughly $41 at the time, for two Papa John's pizzas to prove the cryptocurrency had real-world purchasing power.
Under Ethereum's EIP-1559 fee system, which amount does the protocol burn?
The protocol credits the base fee to no one and removes it from circulation; validators receive the priority fee.
Which teenage programmer wrote Ethereum's founding whitepaper?
Buterin drafted Ethereum's first whitepaper in November 2013 after months of exploring blockchain uses beyond money.
Network auditors, known as Bitcoin miners, solve complex math puzzles to perform what critical task?
Miners compete to generate a specific cryptographic hash, which permanently secures a block of transactions and prevents users from spending the same digital coin twice.
The Bitcoin network triggers a "halving" event roughly every four years to achieve what economic goal?
By reducing the block reward, halving ensures that the total supply of Bitcoin will never exceed 21 million, creating a deflationary economic model.
What proves a Bitcoin miner completed valid proof of work for a candidate block?
Miners first assemble a candidate block, then test header values until the block hash falls below the network target.