## A toy chain

The chain should have these properties:

   - Running on at least 2 pre-defined nodes (IP addresses given in a config file / no additional discovery necessary)-
   - PoW, with every node a miner-
   - The difficulty is fixed (i.e., block time is not), each block rewards 100 coins-
   - ECDSA cryptography; addresses may be pure public keys-
   - Protect against double spending
   - Transactions can have additional data payload, signed by the sender (and there needs to be a way to set it)
   - Blocks can have additional data payload (and there needs to be a way to set it)
   - Implement a simple REST-like web service API which implements the following services and returns JSON data:
     * Query the block count.
     * Query a single block and return all its transaction data.
     * Query a single transaction and return all its data.
     * Create a transaction from JSON data and accept it for mining


 note:
   sensitive data are encrypted w/ git-crypt;
   please send your public key if you need access
   or ask for a shared DH secret


   decrypt can be done with the command :

   ```sh
   export GPG_ASKPASS=ssh-askpass
   git-crypt unlock
   #gpg --decrypt local.key.asc | git-crypt unlock -

   ```