When Money Becomes an Algorithm: Reading Cryptocurrency from a Sharia Finance Perspective

In an increasingly digital world, humanity is gradually moving almost all economic activities into the virtual realm. Shopping no longer requires physical cash. Investing no longer necessitates visiting a stock exchange building. Even money itself is beginning to lose its physical form. From this context, cryptocurrency was born: not merely a technological instrument, but a symbol of a major shift in how humans perceive value, trust, and economic transactions. When Satoshi Nakamoto introduced Bitcoin in 2008 through the concept of a peer-to-peer electronic cash system, many dismissed it as a minor experiment by the tech community. Yet, in less than two decades, cryptocurrency has evolved into a global phenomenon with a market capitalisation of trillions of dollars, spawning new ecosystems such as blockchain, Web3, and decentralised finance (DeFi). Amidst this development, the Islamic world faces a question that is far from simple: is cryptocurrency halal, or is it a new form of modern speculation that contradicts Sharia principles? This question is much more complex than merely choosing between ‘permissible’ or ‘forbidden’, because what is being debated is not just a digital asset, but how fiqh muamalah responds to a rapidly changing era. One of the biggest issues with cryptocurrency from a Sharia perspective is its extreme volatility. The prices of Bitcoin, Ethereum, and various digital tokens can rise and fall dramatically within hours. In certain conditions, the crypto market resembles an arena of speculation more than a space for productive investment. This is where concerns about gharar (excessive uncertainty) and maysir (gambling) arise. Many modern crypto trading practices are conducted not based on an understanding of blockchain technology or the fundamentals of the digital asset, but purely to chase quick profits. Phenomena such as pump and dump schemes, meme coins, and leveraged gambling bring certain crypto activities dangerously close to speculative practices prohibited in Islam. Recent academic studies in TASHDIQ suggest that the halal-haram dichotomy in crypto is too reductive, as there is a substantial difference between long-term investment based on technological fundamentals and speculative daily trading. The core problem, therefore, lies not in the technology itself, but in how humans use it. Islam has never rejected economic innovation from the outset. Historically, Islamic civilisation was known for being highly adaptive to the development of trade instruments, business contracts, and cross-regional transaction systems. A principle of fiqh even affirms: ‘Al-ashlu fil mu’amalat al-ibahah’ — the default ruling for transactions is permissibility unless there is evidence prohibiting it. Consequently, blockchain as the foundational technology for cryptocurrency is inherently neutral. It can be used for the common good, but it can also become a tool for destructive speculation. Ironically, behind the controversy surrounding cryptocurrency, blockchain technology possesses many characteristics that align with the spirit of Islamic economics. Blockchain offers transparency, immutable record-keeping, transactional efficiency, and democratic data distribution. In certain contexts, this technology even has the potential to strengthen the principles of trustworthiness (amanah) and accountability in the Sharia economy. Several studies indicate that blockchain can be utilised for managing zakat, waqf, digital sukuk, and even tracking the distribution of Islamic social funds in real time. Imagine if productive waqf funds could be transparently monitored by the public via blockchain, or if zakat distribution could be openly verified without data manipulation. In such contexts, blockchain could become an instrument for strengthening the economic governance of the ummah. Therefore, the greatest challenge for the Islamic world today is not merely issuing a fatwa on crypto, but building an Islamic digital finance framework capable of separating productive innovation from destructive speculation.