加密货币是一种数字资产，它们的存在基于区块链技术和密码学原理。在加密货币领域，比特币、以太坊等数字货币已经成为全球范围内的热门投资工具。加密货币的真实存在性不容置疑，它们是通过分布式账本技术记录在区块链上的数字化资产，提供了一种去中心化的交易方式。

加密货币的真实存在可以通过多种途径解释。首先，加密货币的交易记录被保存在区块链上，这意味着每一笔交易都可以被验证和追溯，确保了数字资产的真实性和可靠性。其次，加密货币的发行由数学算法和密码学原理控制，不存在中心化机构干预，确保了货币的不可篡改性和安全性。此外，全球范围内的加密货币交易所和数字钱包也为加密货币的使用提供了便利和流动性，进一步证明了它们的真实存在性。

总结来说，加密货币作为一种新型数字资产，在当前金融体系中已经得到了广泛的应用和认可。通过区块链技术和密码学原理的支持，加密货币的真实存在性得到了充分保障，并且在全球范围内得到了普遍接受和认可。因此，我们可以说，加密货币的真实存在是不可否认的，它们已经成为当今金融市场中不可或缺的一部分。

English explanation:

Cryptocurrency is a digital asset that exists based on blockchain technology and cryptographic principles. In the field of cryptocurrency, digital currencies such as Bitcoin and Ethereum have become popular investment tools globally. The true existence of cryptocurrency is unquestionable, as they are digital assets recorded on the blockchain through distributed ledger technology, providing a decentralized way of transactions.

The real existence of cryptocurrency can be explained through various means. Firstly, transaction records of cryptocurrency are stored on the blockchain, which means every transaction can be verified and traced, ensuring the authenticity and reliability of digital assets. Secondly, the issuance of cryptocurrency is controlled by mathematical algorithms and cryptographic principles, without the intervention of centralized institutions, ensuring the immutability and security of the currency. Additionally, cryptocurrency exchanges and digital wallets worldwide provide convenience and liquidity for the use of cryptocurrency, further proving their true existence.

In conclusion, cryptocurrency as a new form of digital asset has been widely used and recognized in the current financial system. Supported by blockchain technology and cryptographic principles, the true existence of cryptocurrency is fully guaranteed and widely accepted globally. Therefore, we can say that the real existence of cryptocurrency is undeniable, as they have become an indispensable part of today's financial market.