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Blockchain : A blockchain is an immutable
digital ledger that records every single transaction ever made.
Currencies
Blockchain helps to solve double-spending problem without the need of a trusted authority or central server.
Bitcoin : Asset of value that can be interchanged securely without 3rd party. It was designed as a digital alternative to traditional currencies, aiming to provide a decentralized method of transferring value. Bitcoin transactions are verified by a network of nodes through cryptography and recorded on a public ledger called a blockchain.
Ethereum : While it is a cryptocurrency, is designed to be a platform that allows peer-to-peer contracts and applications to be built and run without any control, permission, or interference from third parties.
Agents
Exchanges