The Central African Republic has just declared Bitcoin to be legal tender, but 90% of the population doesn't have ready access to the Internet. I am exploring safe ways to use Bitcoin without having to connect to the Internet for every exchange. Ideally a paper wallet could be created in a manner that prevents anyone from memorizing or recording the private key before it is sealed.

I am also exploring a smart contract that guarantees (via escrowed funds and/or multisig) that no funds are released until the BitCheques are opened.