- On 1 August part of the bitcoin community created a new currency, Bitcoin Cash, over disagreements about how to expand the network’s capacity.
- It was the first major split of the network and showed that these assets have no central authority to settle disagreements.
- Anyone who holds or is considering holding cryptocurrencies should understand their custody, technical and regulatory risks and tax treatment.
On 1 August 2017 part of the bitcoin community created a new currency, Bitcoin Cash, over disagreements about how to expand the network’s capacity. It was the first major split of the network. Until then, the discussion about how to increase the volume of transactions the system can process had stayed in technical forums; with the split, the disagreement turned into two distinct currencies. For the general public the news was a surprise: few knew that such a currency could split.
The episode was a reminder of something often overlooked when talking about cryptocurrencies: their rules are not dictated by an institution but depend on the consensus of a community. When that consensus breaks, there is no referee to turn to. For those who hold these assets, or think of doing so, it is a feature worth understanding before forming any expectation. None of this means it is good or bad, only that it works under rules different from those of the traditional financial system.
What a fork is
Because bitcoin runs on rules agreed by a decentralised community, when one part disagrees it can separate and carry on with its own version. The result is a new currency that shares a history with the original but evolves independently. Those who held bitcoins before the separation came to hold the new currency too, although its value and usefulness were different.
The underlying dispute was technical: how to increase the network’s capacity to process more transactions without losing its security and decentralisation characteristics. Different proposals had advantages and drawbacks, and the community did not reach agreement. The split was the way of resolving the disagreement, but it also divided the community and left open questions about which of the versions would prevail.
What the episode reveals
It shows that these assets have no central authority to settle disagreements, and that their rules can change or split. That lack of clear governance is one of their characteristics, but also a source of uncertainty for those who hold them. At a bank, a change of terms is communicated, negotiated or regulated; here, decisions can emerge from informal and hard-to-predict processes.
Moreover, the existence of several versions of the same network creates confusion. It is not always clear which product is being acquired, how it relates to the original or what guarantees the seller offers. In an environment where clear investor-protection rules are still lacking, the responsibility for understanding what is bought falls almost entirely on the buyer. That asymmetry of information is, in itself, a risk.
Prudence with cryptocurrencies
Anyone who holds or is considering holding cryptocurrencies should understand how they are held in custody, what technical and regulatory risks exist and how they are declared for tax purposes. The loss of access keys, failures of exchange platforms or a change in regulation can affect the value of what one holds. It is also wise to keep an orderly record of the transactions made.
This text is general information and not investment advice. An independent adviser can help assess whether such an asset fits each person’s goals and tolerance for risk and, if so, what proportion of wealth it would make sense to devote to it. The prudent course is never to commit money one cannot afford to lose, and not to take decisions under the pressure of novelty.
Before becoming interested in the novelty, it is worth understanding the rules of the game.
This article is general information. It is not legal, tax or investment advice, and it does not take anyone’s particular circumstances into account.
