The Circle guide to cryptocurrency and blockchain technology introduces readers to the concept of the "Internet of Value," highlighting its potential to transform global trade and finance similarly to how the internet revolutionized communication. At the core of this transformation is blockchain technology, which underpins cryptoassets like Bitcoin, enabling secure, decentralized transactions free from government or corporate control. Originating from Satoshi Nakamoto's vision during the 2008 financial crisis, Bitcoin introduced a new form of digital currency that operates independently of traditional financial systems. Blockchain's decentralized structure, supported by cryptography, allows for the secure exchange of digital assets, challenging conventional monetary systems and fostering a new era of peer-to-peer commerce. Beyond Bitcoin, blockchain platforms such as Ethereum facilitate complex transactions through smart contracts, broadening the scope of value exchange and enabling innovative applications across various industries. This paradigm shift, driven by cryptoassets and open blockchain networks, promises to rebuild the global financial system, promote greater economic inclusion, and create unprecedented business opportunities, aligning with Circle's mission to enhance economic accessibility and prosperity worldwide.