2 ⃣Nodes • A full node needs to store the entire blockchain and all transactions that have been executed since the first block. They ensure consensus and ensure that data is available and blocks are valid in order for transactions to be executed on the blockchain. Light nodes (aka light clients) Light nodes are used for aggregation and outsourcing most of the work to full nodes. They do not verify transactions, but check each block to see if consensus is reached and the block data is available to the network. Most light nodes rely on the "honest majority assumption", which assumes that the majority of participants (such as validators) are honest. Light nodes require less hardware. This allows more nodes, but overall security is weaker (sometimes). #ETH #crypto2023 #Binance