The contract agreement consists of several parties. For a contract to be legally binding, a contract must be provided and approved. This simple rationale for a contract is not as obvious as it first appeared. In some cases, the parties to the contract usually need to communicate by mail or other indirect means.
The base is two contracts. This is a contract between Cloud Funding (TemplateCrowdsale) and Token Contract (MainToken). These two contracts are inherited from other contracts that implement some functionality. For example, BonusableToken implements a cumulative compensation token at the time of purchase. The structure of contract inheritance is shown in the figure. Blue marks the contract of the OpenZeppelin library. These contracts fulfill most functions from the ERC 20 standard to refundable cloud sales, hold funds until the end of crowdsourcing, and refund if the necessary amount at the end of the cloud funding is not completed.
There is still much confusion as to which token it contracts. In essence, the token agreement is a smart contract that contains a map of the account address and its balance. The balance represents the value defined by the contract creator. A token contract can represent a physical object, another currency value, using the balance, and the third is the owner's reputation. This unit of balance is often called a token. Another way to burn a token is to send the token to an address whose secret key is unknown (usually a zero address). This has the same effect as burning a token, making the token unusable, but does not reduce the total number of tokens. For example, if 0x93f1 ... 1b09 burns 50 tokens like this, the balance will be updated as follows:
The Energis Token economy is implemented by three Smart Contracts. The first smart contract is placed in the block chain to request a transaction fee as an Energis token. The contract then recycles up to 70% of the transaction fee to consumers through the compensation pool. The remaining tokens are sent to the payment contract. For individual investors who wish to purchase utility tokens as part of their investment, it makes sense to compare that choice with the stock investment. The value of the two investment types depends mainly on the expected number of customers in the future, but this is always uncertain. Nevertheless, the market will reach agreement through crowd wisdom