 Good morning, thank you. I'm very glad to have a lightning talk at this confide. I'm Sora Sugami, a Japanese high school student and a blockchain protocol designer. So today, I would like to introduce a new protocol to share the ability among the year 1 blockchains. Maybe you have already know what the code is. A chain depends on its value chain. But layer 1 blockchains such as Bitcoin and Ethereum have equivalent ratios. It can't use the existing protocols. So I designed a new one. In this protocol, a chain which imports security doesn't need to depend on other chains. And a chain which exports security doesn't need to be changed. The name of the protocol is Proof of Units. It's a kind of signal control mechanism like proof of work or proof of stake. It can integrate multi-mechanisms. Abstractly treating an element such as password or stake of token as unit, summing up costs for shields to produce blocks, thanks to an abstract model of signal control mechanisms. This has some abstract variables and functions. These are two described signal control mechanisms. For example, to describe proof of work, tasks become sealed data for binding. I think products become produced as hash, work can binding, and verify become confirming with the hash's recent target. And also, they are to combine multi-mechanisms. The most important value in this model is unit. Any kinds of products are transformed into units, and they are used as both power in the consensus algorithm. So it can integrate multi-mechanisms. However, if one unit is generated from one product, attackers can get the majority of units by performing easy tasks with small costs. It has a problem from the viewpoint of security. So it adjusts the amount of generated units. To explain this adjustment system, I also defined two variables, a base task and its base cost, and one function to compute the value of units and products. This is an identical equation to adjust the amount. It means when a consumed cost is x times as azure's base cost, x units are generated per unit. It guarantees the equivalent amounts of cost has to be consumed to generate the equivalent amounts of units, no matter which task is performed. In this way, 244 units describe civil control mechanisms abstractly and integrate them securely. Then, integrating the mechanisms of external chains, it can sum up the consumed costs and increase the total amounts of units. More units are generated, more cost attackers have to be consumed. So it can implement the security. It has more advantages. A chain which imports security doesn't push information like block hatch to the azure. It just puts information and security. So the imported chain doesn't need to be accepted by other chains. And the chain which exports security doesn't need to be changed. This is why this protocol can share security and layer 1 blockchains. In the case of importing security, its preferred mechanism is described like this. It enables us to import the cost consumed for Bitcoin mining. I would like to continue this research and design more complete models. Thank you very much.