diff --git a/packages/ur-registry-cardano/package.json b/packages/ur-registry-cardano/package.json
index 4057ab1..a5aea07 100644
--- a/packages/ur-registry-cardano/package.json
+++ b/packages/ur-registry-cardano/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@keystonehq/bc-ur-registry-cardano",
-  "version": "0.3.2",
+  "version": "0.3.3",
   "description": "bc-ur-registry extension for Cardano",
   "main": "dist/index.js",
   "types": "dist/index.d.ts",
diff --git a/packages/ur-registry-cardano/src/CardanoCatalystRequest.ts b/packages/ur-registry-cardano/src/CardanoCatalystRequest.ts
new file mode 100644
index 0000000..b7acda9
--- /dev/null
+++ b/packages/ur-registry-cardano/src/CardanoCatalystRequest.ts
@@ -0,0 +1,204 @@
+import {
+  CryptoKeypath,
+  extend,
+  DataItem,
+  PathComponent,
+  RegistryItem,
+  DataItemMap,
+} from "@keystonehq/bc-ur-registry";
+import { ExtendedRegistryTypes } from "./RegistryType";
+import * as uuid from "uuid";
+
+const { decodeToDataItem, RegistryTypes } = extend;
+
+enum Keys {
+  requestId = 1,
+  delegations,
+  stakePub,
+  paymentAddress,
+  nonce,
+  voting_purpose,
+  derivationPath,
+  origin,
+  signType,
+}
+
+interface CardanoCatalystRawDelegationProps {
+  xfp: string;
+  hdPath: string;
+  weight: number;
+}
+
+export type CardanoCatalystRawDelegationsProps =
+  CardanoCatalystRawDelegationProps[];
+
+interface CardanoCatalystDelegationProps {
+  hdPath: CryptoKeypath;
+  weight: number;
+}
+
+interface CardanoCatalystRequestProps {
+  requestId?: Buffer;
+  delegations: CardanoCatalystDelegationProps[];
+  stakePub: Buffer;
+  paymentAddress: Buffer;
+  nonce: number;
+  voting_purpose: number;
+  derivationPath: CryptoKeypath;
+  origin?: string;
+}
+
+type CardanoCatalystDelegation = {
+  hdPath: CryptoKeypath;
+  weight: number;
+};
+
+const genCryptoKeypath = (path: string, xfp: string) => {
+  const paths = path.replace(/[m|M]\//, "").split("/");
+  return new CryptoKeypath(
+    paths.map((path) => {
+      const index = parseInt(path.replace("'", ""));
+      let isHardened = false;
+      if (path.endsWith("'")) {
+        isHardened = true;
+      }
+      return new PathComponent({ index, hardened: isHardened });
+    }),
+    Buffer.from(xfp, "hex")
+  );
+};
+
+export class CardanoCatalystRequest extends RegistryItem {
+  private requestId?: Buffer;
+  private delegations: CardanoCatalystDelegation[];
+  private stakePub: Buffer;
+  private paymentAddress: Buffer;
+  private nonce: number;
+  private voting_purpose: number;
+  private derivationPath: CryptoKeypath;
+  private origin?: string;
+
+  getRegistryType = () =>
+    ExtendedRegistryTypes.CARDANO_CATALYST_VOTING_REGISTRATION;
+
+  constructor(args: CardanoCatalystRequestProps) {
+    super();
+    this.requestId = args.requestId;
+    this.derivationPath = args.derivationPath;
+    this.delegations = args.delegations;
+    this.stakePub = args.stakePub;
+    this.paymentAddress = args.paymentAddress;
+    this.nonce = args.nonce;
+    this.voting_purpose = args.voting_purpose;
+    this.origin = args.origin;
+  }
+
+  public getRequestId = () => this.requestId;
+  public getDelegations = () => this.delegations;
+  public getStakePub = () => this.stakePub;
+  public getPaymentAddress = () => this.paymentAddress;
+  public getNonce = () => this.nonce;
+  public getVotingPurpose = () => this.voting_purpose;
+  public getDerivationPath = () => this.derivationPath.getPath();
+  public getOrigin = () => this.origin;
+
+  public toDataItem = () => {
+    const map: DataItemMap = {};
+    if (this.requestId) {
+      map[Keys.requestId] = new DataItem(
+        this.requestId,
+        RegistryTypes.UUID.getTag()
+      );
+    }
+
+    map[Keys.stakePub] = this.stakePub;
+    map[Keys.paymentAddress] = this.paymentAddress;
+    map[Keys.nonce] = this.nonce;
+    map[Keys.voting_purpose] = this.voting_purpose;
+
+    map[Keys.delegations] = this.delegations.map((delegation) => {
+      const res = delegation.hdPath.toDataItem();
+      res.setTag(delegation.hdPath.getRegistryType().getTag());
+      return res;
+    });
+
+    if (this.origin) {
+      map[Keys.origin] = this.origin;
+    }
+
+    const keyPath = this.derivationPath.toDataItem();
+    keyPath.setTag(this.derivationPath.getRegistryType().getTag());
+    map[Keys.derivationPath] = keyPath;
+
+    return new DataItem(map);
+  };
+
+  public static fromDataItem = (dataItem: DataItem) => {
+    const map = dataItem.getData();
+    const delegations: CardanoCatalystDelegation[] = map[Keys.delegations].map(
+      (delegation: DataItem) => {
+        const hdPath = CryptoKeypath.fromDataItem(delegation);
+        return {
+          hdPath,
+          weight: 0,
+        };
+      }
+    );
+    const stakePub = map[Keys.stakePub];
+    const paymentAddress = map[Keys.paymentAddress];
+    const nonce = map[Keys.nonce];
+    const voting_purpose = map[Keys.voting_purpose];
+    const derivationPath = CryptoKeypath.fromDataItem(map[Keys.derivationPath]);
+    const requestId = map[Keys.requestId]
+      ? map[Keys.requestId].getData()
+      : undefined;
+    const origin = map[Keys.origin] ? map[Keys.origin] : undefined;
+
+    return new CardanoCatalystRequest({
+      requestId,
+      delegations,
+      stakePub,
+      paymentAddress,
+      nonce,
+      voting_purpose,
+      derivationPath,
+      origin,
+    });
+  };
+
+  public static fromCBOR = (_cborPayload: Buffer) => {
+    const dataItem = decodeToDataItem(_cborPayload);
+    return CardanoCatalystRequest.fromDataItem(dataItem);
+  };
+
+  public static constructCardanoCatalystRequest(
+    delegations: CardanoCatalystRawDelegationsProps,
+    stakePub: string,
+    paymentAddress: string,
+    nonce: number,
+    voting_purpose: number,
+    hdPath: string,
+    xfp: string,
+    uuidString?: string,
+    origin?: string
+  ) {
+    const requestId = uuidString
+      ? Buffer.from(uuid.parse(uuidString) as Uint8Array)
+      : undefined;
+    const cardanoDelegations = delegations.map((delegation) => ({
+      hdPath: genCryptoKeypath(delegation.hdPath, delegation.xfp),
+      weight: delegation.weight,
+    }));
+
+    return new CardanoCatalystRequest({
+      requestId,
+      delegations: cardanoDelegations,
+      stakePub: Buffer.from(stakePub, "hex"),
+      paymentAddress: Buffer.from(paymentAddress, "hex"),
+      nonce,
+      voting_purpose,
+      derivationPath: genCryptoKeypath(hdPath, xfp),
+      origin,
+    });
+  }
+}
diff --git a/packages/ur-registry-cardano/src/CardanoCatalystSignature.ts b/packages/ur-registry-cardano/src/CardanoCatalystSignature.ts
new file mode 100644
index 0000000..3eebadf
--- /dev/null
+++ b/packages/ur-registry-cardano/src/CardanoCatalystSignature.ts
@@ -0,0 +1,58 @@
+import {
+  extend,
+  DataItem,
+  RegistryItem,
+  DataItemMap,
+} from "@keystonehq/bc-ur-registry";
+import { ExtendedRegistryTypes } from "./RegistryType";
+
+const { RegistryTypes, decodeToDataItem } = extend;
+
+enum Keys {
+  requestId = 1,
+  signature,
+}
+
+export class CardanoCatalystSignature extends RegistryItem {
+  private requestId?: Buffer;
+  private signature: Buffer;
+
+  getRegistryType = () =>
+    ExtendedRegistryTypes.CARDANO_CATALYST_VOTING_REGISTRATION_SIGNATURE;
+
+  constructor(signature: Buffer, requestId?: Buffer) {
+    super();
+    this.signature = signature;
+    this.requestId = requestId;
+  }
+
+  public getRequestId = () => this.requestId;
+  public getSignature = () => this.signature;
+
+  public toDataItem = () => {
+    const map: DataItemMap = {};
+    if (this.requestId) {
+      map[Keys.requestId] = new DataItem(
+        this.requestId,
+        RegistryTypes.UUID.getTag()
+      );
+    }
+    map[Keys.signature] = this.getSignature();
+    return new DataItem(map);
+  };
+
+  public static fromDataItem = (dataItem: DataItem) => {
+    const map = dataItem.getData();
+    const signature = map[Keys.signature];
+    const requestId = map[Keys.requestId]
+      ? map[Keys.requestId].getData()
+      : undefined;
+
+    return new CardanoCatalystSignature(signature, requestId);
+  };
+
+  public static fromCBOR = (_cborPayload: Buffer) => {
+    const dataItem = decodeToDataItem(_cborPayload);
+    return CardanoCatalystSignature.fromDataItem(dataItem);
+  };
+}
diff --git a/packages/ur-registry-cardano/src/RegistryType.ts b/packages/ur-registry-cardano/src/RegistryType.ts
index 34855d0..ef60560 100644
--- a/packages/ur-registry-cardano/src/RegistryType.ts
+++ b/packages/ur-registry-cardano/src/RegistryType.ts
@@ -13,4 +13,12 @@ export const ExtendedRegistryTypes = {
     "cardano-sign-data-signature",
     2206
   ),
+  CARDANO_CATALYST_VOTING_REGISTRATION: new RegistryType(
+    "cardano-catalyst-voting-registration",
+    2207
+  ),
+  CARDANO_CATALYST_VOTING_REGISTRATION_SIGNATURE: new RegistryType(
+    "cardano-catalyst-voting-registration-signature",
+    2208
+  ),
 };
diff --git a/packages/ur-registry-cardano/src/index.ts b/packages/ur-registry-cardano/src/index.ts
index fb2f1d2..8e70555 100644
--- a/packages/ur-registry-cardano/src/index.ts
+++ b/packages/ur-registry-cardano/src/index.ts
@@ -15,3 +15,8 @@ export { CardanoSignDataSignature } from "./CardanoSignDataSignature";
 export { CardanoUtxoData } from "./CardanoUtxo";
 export { CardanoCertKeyData } from "./CardanoCertKey";
 export { CardanoCertKey } from "./CardanoCertKey";
+export {
+  CardanoCatalystRequest,
+  CardanoCatalystRawDelegationsProps,
+} from "./CardanoCatalystRequest";
+export { CardanoCatalystSignature } from "./CardanoCatalystSignature";