Regarding the design of Bitcoin layer 2, I think there are four observable dimensions:
First, two-way security is not lost; two-way security means that BTC assets are safe and user-controllable in both directions, both from the mainnet to the mainnet, without central intervention;
Second, zero-disturbance startup: At the beginning of layer 2 startup, try to avoid making new feature requests for the main network, but build based on the existing main network capabilities, and after stable operation, evolve with the main network in coordination;
Third, open up space for miners’ Fee income; Based on the bitcoin halving model, there will definitely be a critical point in the future. After this critical point, miners’ income will mainly come from transaction fees, rather than block rewards; The computing power provided by miners is the basis for maintaining the security of the bitcoin network; if the Fee is insufficient, it will be unable to cover the miners’ input costs, which will inevitably lead to the withdrawal of miners, resulting in a decrease in computing power, and thus a decrease in network security;
Fourth, extend the use value of Bitcoin and facilitate builders; this will allow more people to participate in the construction of Bitcoin, making the Bitcoin ecosystem more prosperous; at the same time, it can also work together with the above "three" to promote the Bitcoin network to be more robust;
Those who can achieve the above 4 points will have a high probability of becoming the winner of layer2;