How blockchains agree without a boss
Blockchain consensus algorithms enable decentralized networks to collectively validate and secure transactions, bypassing traditional central authorities for trustworthy digital exchanges and fostering global trust.
Blockchain consensus algorithms are clever rules that let computer networks agree on valid transactions without needing a central authority like a bank. This ensures the digital ledger's integrity, where each transaction block is securely linked and verified. Bitcoin introduced Proof of Work (PoW) in 2008, making 'miners' solve puzzles to add blocks, securing the network by making changes incredibly difficult. Newer methods like Proof of Stake (PoS), adopted by Ethereum in 2022, are far more energy-efficient. These algorithms foster trust in a decentralized system, resisting censorship and single points of failure, democratizing secure financial systems globally.