Algorithm 1. Security validation contract.

Input: ${\alpha }_{i}and,{\gamma }_i$

Where ${\alpha }_i\leftarrow Publi{c}_{Keys}$ and ${\gamma }_i\leftarrow Federate{d}_{Challenge}$

Output: Legitimate or Not legitimate

Step 1: Verify the legitimacy of client node

Step 2: Send puzzle to the federated client

Step 3: Receive the puzzle output

Step 3.1: Compute SHA256(Puzzle)

Step 3.2: $\beta =$ SHA256(Puzzle)

Step 4: Validation of β from blockchain

Step 4.1: Validation is successful access grant