This is a contract used for solidity RSA Sha256 Pkcs1 Verification.
The main goal of this token standard proposal is to prevent tokens loses during a token transfer. ERC223 wants to treat the token transfer in the same way as Ether transactions which means to handle each transaction as an event. This can prevent any token lose.
Solidity Contract that allows anyone trustless to vote. The voter does not pay for the voting operation
The purpose of the contract is to crowdfund a project through the Ethereum blockchain. It defines a deadline and an amount to raise by this deadline. In case the target is not reached the payments are reverted to the owners.