ZK Rollup扩容方案StarkNet Alpha上线以太坊主网，该解决方案有助于缓解以太坊当前高昂的手续费使用环境。

StarkNet Alpha 在几周前登陆了主网，上线初期并没有应用费用机制，而与 L1 交互的 gas 成本实际上是由 StarkWare 补贴的。我们针对目前 StarkNet Alpha 版本提出了一种估算和收取交易费用的方式。

Blockchain gaming is the most popular craze within the crypto space. It is attractive for users as it offers new opportunities that traditional gaming does not. Playing games on the Ethereum network is not viable due to high gas fees. This is the reason; L2 networks have become the favourite platforms for gaming DAPPs. These networks can keep up with user demand while accommodating various transaction requests. They also help the games to scale while leveraging the strength of Ethereum’s security. The high throughput and low transaction fee of Starknet make it ideal for many use cases and gaming is one of them.

Capital is a broad term that can describe anything that confers value or benefit to its owners, such as a factory and its machinery, intellectual property like patents, or the financial assets of a business or an individual. While money itself may be construed as capital, capital is more often associated with cash that is being put to work for productive or investment purposes.

A 10-K is a comprehensive report filed annually by a publicly-traded company about its financial performance and is required by the U.S. Securities and Exchange Commission (SEC). The report contains much more detail than a company's annual report, which is sent to its shareholders before an annual meeting to elect company directors.1

The January Effect is a perceived seasonal increase in stock prices during the month of January. Analysts generally attribute this rally to an increase in buying, which follows the drop in price that typically happens in December when investors, engaging in tax-loss harvesting to offset realized capital gains, prompt a sell-off.

Gamma is the rate of change in an option's delta per 1-point move in the underlying asset's price. Gamma is an important measure of the convexity of a derivative's value, in relation to the underlying. A delta hedge strategy seeks to reduce gamma in order to maintain a hedge over a wider price range. A consequence of reducing gamma, however, is that alpha will also be reduced.

The harmonic mean is a type of numerical average. It is calculated by dividing the number of observations by the reciprocal of each number in the series. Thus, the harmonic mean is the reciprocal of the arithmetic mean of the reciprocals.

A leverage ratio is any one of several financial measurements that look at how much capital comes in the form of debt (loans) or assesses the ability of a company to meet its financial obligations. The leverage ratio category is important because companies rely on a mixture of equity and debt to finance their operations, and knowing the amount of debt held by a company is useful in evaluating whether it can pay off its debts as they come due. Several common leverage ratios are discussed below.