Company: BTC
Filing Date: 2025-02-28
Form Type: 424B3
Source: 0000950170-25-029413
Chunk: 118

Company: Grayscale Bitcoin Mini Trust ETF
Filing Date: 2025-02-28
Form: 424B3
Chunk 118
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-work network, was the target of two double-spend attacks by an unknown actor or actors that gained more than 50% of the processing power of the Ethereum Classic Network. The attacks resulted in reorganizations of the Ethereum Classic blockchain that allowed the attacker or attackers to reverse previously recorded transactions in excess of over $5.0 million and $1.0 million.

In addition, in May 2019, the Bitcoin Cash network, a proof-of-work network, experienced a >50% attack when two large mining pools reversed a series of transactions in order to stop an unknown miner from taking advantage of a flaw in a recent Bitcoin Cash protocol upgrade. Although this particular attack was arguably benevolent, the fact that such coordinated activity was able to occur may negatively impact perceptions of the Bitcoin Cash network. Any similar attacks on the Bitcoin Network could negatively impact the value of Bitcoin and the value of the Shares.

Although there are no known reports of malicious activity on, or control of, the Bitcoin Network, it is believed that certain mining pools may have exceeded the 50% threshold on the Bitcoin Network. The possible crossing of the 50% threshold indicates a greater risk that a single mining pool or small group of mining pools, for example could exert authority over the validation of Bitcoin transactions, and this risk is heightened if over 50% of the processing power on the network falls within the jurisdiction of a single governmental authority and is significantly heightened if over 66% falls within such a jurisdiction. If network participants, including the core developers and the administrators of mining pools, do not act to ensure greater decentralization of Bitcoin mining processing power, the feasibility of a malicious actor obtaining control of the processing power on the Bitcoin Network will increase, which may adversely affect the value of the Shares.

There are also concerns that blockchain “bloat” could also contribute to the conditions leading to a 51% attack. As the size of a blockchain grows larger, it requires higher amounts of resources to initially synchronize and validate the entire blockchain. If some potential miners are excluded because these costs become prohibitive, Bitcoin processing power may become more concentrated in a smaller number of parties, increasing the feasibility of a malicious actor to obtain control of the processing power on the Bitcoin Network, which may adversely affect the value of the Shares.

A malicious actor may also obtain control over the Bitcoin Network through its influence over core developers by gaining direct control over a core developer or an otherwise influential programmer. The less that the Bitcoin ecosystem grows, the greater the possibility that a malicious actor may be able to maliciously