NoterEth, pronounced "Notaryth", is a prototype notary and "Proof of Existence" DAPP. By submitting hashes of documents you can proof on a later date that you were privileged to certain information at a point in history. The transfer of documents can enable other contracts to allow certain access based on who owns a hash.
You can see a working demo here. It does require a local running Geth instance.
If you want to play around with the contract I suggest loading up the
contract.sol file up in Cosmo and playing around with it there.
If you deploy the contract on your own chain be sure to edit abi.js and
edit in your own contract address.