✅Answer: What is clear from history and narrations is that for thousands of years, the common currency among people for buying and selling was mostly gold and silver coins. With the schemes of rulers who intended to take financial power from the people and place it in their own hands, not long ago, financial transactions were based on worthless paper and metal banknotes that merely represented a specific amount and had no inherent value.

Although this issue caused specific complexities and ambiguities in some financial rulings such as usury, zakat, etc., because of its backing, the possibility of converting it into gold and silver, the identifiable issuers of these currencies, and the guarantee and possibility of cashing them, they can be considered similar to gold and silver, and the relevant rulings can be applied.

✅But recently, completely unknown individuals with a suspicious background have invented a type of digital currency. By setting up an internet program and offering a limited number of codes, each representing a single Bitcoin currency, they have encouraged people to mine, buy, and sell it.

✅Based on this, some people can use a computer and a specific program to mine a number of these codes and make them their own, and then sell them to others. Of course, mining these codes was easier at first, but the further it goes, due to their limited nature, it becomes much more difficult and gradually becomes impossible.

Individuals can purchase these codes, which represent a specific amount of Bitcoin, from their owners and, by giving rials, dollars, or other currencies, acquire these codes and, in fact, become the owner of a specific amount of Bitcoin.

✅This digital currency, because its owner cannot be traced or identified, has been welcomed and used by many offenders and major thieves.

✅The first point worth mentioning is that the mining of Bitcoin, which makes a person the owner of a number of digital currencies that can be exchanged with other backed and common currencies, does not fit into any of the Islamic ways of earning wealth, because it is neither trade, nor governance, nor leasing, nor anything else. The person who acquires it does not even know the way this digital wealth was earned, while these digital and suspicious currencies have no backing or guarantor.

Imam Sajjad (peace be upon him) says:

أَمَّا حَقُّ مَالِكَ فَأَنْ لَا تَأْخُذَهُ إِلَّا مِنْ حِلِّهِ

But the right of your wealth is that you do not take it except from its lawful means.

📚Risalat al-Huquq

Imam Reza (peace be upon him) said in a hadith:

لَا يَحِلُّ مَالٌ إِلَّا مِنْ وَجْهٍ أَحَلَّهُ اللَّهُ

📚Kafi, Vol. 1, p. 547

Imam Reza (peace be upon him) said: 'No wealth is lawful except from a means that God has made lawful.'

✅Dozens of other narrations also emphasize the necessity of paying attention to the manner and source of acquiring wealth. Therefore, as long as the Sharia basis for the mining of Bitcoin is not clear, there is no place for it, because in addition to the severe ambiguity, what is behind it and the purpose of its creation are also very suspicious and questionable.

✅But the necessity of avoiding the buying and selling of Bitcoin is established due to the unproven nature of this completely suspicious currency. In addition, other severe ambiguities are also involved:

1 عن النَّبِيِّ قَالَ: و نَهَى عَنْ بَيْعِ ما لَيْس عِنْدَكَ و نَهَى عَنْ بَيْعِ ما لَمْ يُضْمَنْ

📚Faqih, Vol. 4, p. 8

The Messenger of Allah (peace be upon him and his family) in a hadith forbade the sale of what is not in your possession and the sale of what is not guaranteed.

2 يُونُسَ قَالَ: سَأَلْتُ أَبَا عَبْدِ اللَّهِ عَنْ قَوْل اللَّه و لا تُؤْتُوا السُّفَهاءَ أَمْوالَكُمُ قَالَ مَنْ لَا تَثِقُ بِه

📚Tafsir Ayyashi, Vol. 1, p. 220

Yunus said: 'I asked Imam Sadiq (peace be upon him) about the verse 'And do not give your wealth to the foolish.' The Imam said: 'Meaning someone you do not trust and have no confidence in.'

A person who gives their wealth and receives a suspicious, unsupported, and unguaranteed code virtually, which the designers of this code can invalidate at any moment, and no institution, government, or person is accountable, has undoubtedly given their wealth to untrustworthy people and is subject to this prohibition in the Quran.

3 Buying and selling this virtual and suspicious currency is also doubtful from many other aspects. Such as:

✅Selling and buying an unknown thing.

✅The absence of a written, specific, and trustworthy document that indicates ownership and a person's claim.

✅Selling something whose ownership has not yet been proven for the person.

✅Buying something whose existence is not proven and is just a virtual and suspicious currency.

Numerous hadiths about avoiding doubtful matters are a clear reason for the followers of the two weighty things (the Quran and the Ahl al-Bayt) to avoid this virtual currency and similar matters, so that, God willing, with the advent of our master, its matter will become clearer and clearer.

O Allah, hasten his appearance.