Solidity by Example

Similar to the staking rewards contract. Difference is that reward amount may vary at each second.

This is a minimal example of a contract that rewards users for staking their token.

ERC20 crowd fund creator that allows users to create new funds where other users can pledge their tokens to a campaign. If the campaign does not reach its goal, users can withdraw their pledge.

An English auction is a process of selling goods and the most common form of auction. The price starts low and increases as buyers bid for the item until one buyer is left willing to pay a certain amount and a higher bid isn't received during the given time period.

An auction in which the auctioneer begins with a high asking price in the case of selling, and lowers it until some participant accepts the price, or it reaches a predetermined reserve price.