Company: ZCSH
Filing Date: 2025-03-07
Form Type: 10-K
Source: 0000950170-25-035469
Chunk: 159

Company: Grayscale Zcash Trust (ZEC)
Filing Date: 2025-03-07
Form: 10-K
Item: Item 1A
Chunk 159
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 minority of users continued to develop the original blockchain, referred to as “Ethereum Classic” with the digital asset on that blockchain now referred to as ETC. ETC now trades on several Digital Asset Trading Platforms. A fork may also occur as a result of an unintentional or unanticipated software flaw in the various versions of otherwise compatible software that users run. Such a fork could lead to users and miners abandoning the digital asset with the flawed software. It is possible, however, that a substantial number of users and miners could adopt an incompatible version of the digital asset while resisting community-led efforts to merge the two chains. This could result in a permanent fork, as in the case of Ethereum and Ethereum Classic.

In addition, many developers have previously initiated hard forks in the Bitcoin blockchain to launch new digital assets, such as Bitcoin Cash, Bitcoin Gold, Bitcoin Silver and Bitcoin Diamond, as well as the Bitcoin Cash blockchain to launch a new digital asset, Bitcoin Satoshi’s Vision. To the extent such digital assets compete with ZEC, such competition could impact demand for ZEC and could adversely impact the value of the Shares.

Furthermore, a hard fork can lead to new security concerns. For example, when the Ethereum and Ethereum Classic networks split in July 2016, replay attacks, in which transactions from one network were rebroadcast to nefarious effect on the other network, plagued Ethereum trading platforms through at least October 2016. An Ethereum trading platform announced in July 2016 that it had lost 40,000 Ethereum Classic, worth about $100,000 at that time, as a result of replay attacks. Similar replay attack concerns occurred in connection with the Bitcoin Cash and Bitcoin Satoshi’s Vision networks split in November 2018. Another possible result of a hard fork is an inherent decrease in the level of security due to significant amounts of mining power remaining on one network or migrating instead to the new forked network. After a hard fork, it may become easier for an individual miner or mining pool’s hashing power to 

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exceed 50% of the processing power of a digital asset network that retained or attracted less mining power, thereby making digital asset networks that rely on proof-of-work more susceptible to attack.

Digital asset networks and related protocols may also be cloned. Unlike a fork of a digital asset network, which modifies an existing blockchain, and results in two competing digital asset networks, each with the same genesis block, a “clone” is a copy of a protocol’s codebase, but results in an entirely new blockchain and