This services enables users to register stars on a private blockchain.

To setup the notary service complete the following:

1. Clone or download the repository: https://github.com/chrisfranz/private-blockchain-notary-service-project-4.git

2. Run command npm install to install the project dependencies.

3. From the root directory, run command node app.js in the terminal to start server. Access the server at the following address: http://localhost:8000/

Send a POST request to endpoint http://localhost:8000/requestValidation

The request body should contain the following JSON data:

{ "address":"19xaiMqayaNrn3x7AjV5cU4Mk5f5prRVpL" }

Take the address and message from the response and generate a signature in your bitcoin wallet. Send a POST request with the address and signature in step 3.

Send a POST request to endpoint http://localhost:8000/message-signature/validate

The request body should contain the following JSON data:

{
  "address":"19xaiMqayaNrn3x7AjV5cU4Mk5f5prRVpL",
  "signature":"H8K4+1MvyJo9tcr2YN2KejwvX1oqneyCH+fsUL1z1WBdWmswB9bijeFfOfMqK68kQ5RO6ZxhomoXQG3fkLaBl+Q="
}

If you were successful in receiving validation in step 3, you may now save your star data to the blockchain. Send a POST request to http://localhost:8000/block with the following JSON schema:

{
  "address": "19xaiMqayaNrn3x7AjV5cU4Mk5f5prRVpL",
  "star": {
              "dec": "68° 52' 56.9",
              "ra": "16h 29m 1.0s",
              "story": "Found star using https://www.google.com/sky/"
          }
}

Look up your star on the blockchain with the following GET requests

Hash http://localhost:8000/stars/hash[HASH]

Address http://localhost:8000/stars/address[ADDRESS]

Block http://localhost:8000/block/[HEIGHT]