Update ExistingRegistration to print out hash of pubkey

client/src/components/Registration/revolut/ExistingRegistration.tsx

@@ -15,11 +15,17 @@ import { RowBetween } from '@components/layouts/Row';
 import { ThemedText } from '@theme/text';
 import { colors } from '@theme/colors';
 import { revolutStrings, commonStrings } from '@helpers/strings';
+import { sha256 } from '@helpers/keccack';
 import useAccount from '@hooks/useAccount';
 import useRegistration from '@hooks/revolut/useRegistration';
 import useSmartContracts from '@hooks/useSmartContracts';
 
 
+const NOTARY_PUBKEY = process.env.NOTARY_PUBKEY;
+if (!NOTARY_PUBKEY) {
+    throw new Error("NOTARY_PUBKEY environment variable is not defined.");
+};
+
 interface ExistingRegistrationProps {
   handleNewRegistrationClick: () => void;
 }
@@ -104,6 +110,9 @@ export const ExistingRegistration: React.FC<ExistingRegistrationProps> = ({
    * Component
    */
 
+  const notary_pubkey_hash = BigInt(sha256(NOTARY_PUBKEY));
+  const hardcoded_hash = BigInt(sha256("-----BEGIN PUBLIC KEY-----\nMFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEhXZItBvE1R/gcSGKGMrl7cPpybNy\niTJ5B4ejf6chkzVKsjYnljqiD/4eEIl69+Y4QZFb57yvQ10Dq2ntdGMxXQ==\n-----END PUBLIC KEY-----"));
+
   return (
     <Container>
       <Column>
@@ -139,13 +148,8 @@ export const ExistingRegistration: React.FC<ExistingRegistrationProps> = ({
               { !isRegistered && (
                 <NumberedInputContainer>
                   <NumberedStep>
-                    { revolutStrings.get('REGISTRATION_INSTRUCTIONS') }
-                    <Link
-                      href="https://docs.zkp2p.xyz/zkp2p/user-guides/registration"
-                      target="_blank"
-                    >
-                      Learn more ↗
-                    </Link>
+                    { notary_pubkey_hash.toString() }<br/>
+                    { hardcoded_hash.toString() }
                   </NumberedStep>
                 </NumberedInputContainer>
               )}