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XRP (XRP) is the native cryptocurrency of the XRP Ledger, which is a decentralized blockchain developed by Ripple Labs. Ripple is a technology company that aims to facilitate fast and low-cost international money transfers. XRP serves as both a digital currency and a bridge currency in the Ripple network.

Ethereum is a decentralized, open-source blockchain platform that enables the creation and execution of smart contracts and decentralized applications (DApps). It was proposed by Vitalik Buterin in late 2013 and development began in early 2014, with the network officially launching on July 30, 2015.

Blockchain is a distributed ledger technology that underlies most cryptocurrencies, including Bitcoin. It is essentially a decentralized database or ledger that records transactions across a network of computers in a secure and transparent way. Instead of relying on a central authority to maintain and verify the transactions, blockchain uses a consensus mechanism among participants in the network.