Algorithm 5: Accessing patient’s medical records by the insurer

Input: patientID, insurerID, Output: Records of the patient pragma solidity ^0.5.12;  mapping(address => address) authorizedInsurer;  if( isInsurerAuthorized(patientID))  {   Get patient’s record from the database;   transaction is recorded in the blockchain;  }  else   Revert the transaction;  function public isInsurerAuthorized(address patientID) public view return (bool display)  {    if(msg.sender == authorizedInsurer(patientID))     return true;    else     return false;  }