Edu blockchain

1. You are right. Indeed, it will be rolled back. If the transaction is unfortunately packaged on the fork, the transaction is likely to be cancelled after the main chain is synchronized

the reason why we need six confirmations is that it is more difficult to obtain the optimal solution (to prevent single node fraud). One block may also be able to get an optimal solution, and it is basically impossible to get six blocks together. It has nothing to do with bifurcation

2. Miners don't know what to use? You first get a motherboard that can plug in six graphics cards. Huaqing has those things that can be transferred by PCI, and a power supply that can take up six 1060 cards. It's best to choose the power supply with high conversion rate, otherwise the electricity charge will be enough. The gx1100 of the fierce game player and the 80plus gold medal certification have a conversion rate of 90%. This conversion rate can save electricity.

3. In the selection of model, you can let the merchants help you introce it, or you can solve it by yourself. First, choose a crusher according to the characteristics of raw materials, cone crusher according to the hardness, and crusher model according to the required output
more information about crusher can be obtained online by consulting experts to help solve related problems.