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The first decentralized cryptocurrency, operating on a peer-to-peer network. Introduced in 2009 by Satoshi Nakamoto, Bitcoin allows for the transfer of value without the need for intermediaries like banks or governments.

The difficulty bomb is a mechanism in the Ethereum network that gradually increases mining difficulty to facilitate the transition from Proof of Work to Proof of Stake.

A full node is a complete, independent ledger within a blockchain network that stores and verifies all transactions.