diff --git a/modules/sdk-coin-polyx/src/lib/transactionBuilderFactory.ts b/modules/sdk-coin-polyx/src/lib/transactionBuilderFactory.ts
index 5cb2bb1241..d467ad4fd4 100644
--- a/modules/sdk-coin-polyx/src/lib/transactionBuilderFactory.ts
+++ b/modules/sdk-coin-polyx/src/lib/transactionBuilderFactory.ts
@@ -1,4 +1,4 @@
-import { BaseTransactionBuilderFactory, NotImplementedError } from '@bitgo/sdk-core';
+import { BaseTransactionBuilderFactory } from '@bitgo/sdk-core';
 import { BaseCoin as CoinConfig } from '@bitgo/statics';
 import { decode } from '@substrate/txwrapper-polkadot';
 import { TransferBuilder } from './transferBuilder';
@@ -67,8 +67,8 @@ export class TransactionBuilderFactory extends BaseTransactionBuilderFactory {
     return new WithdrawUnbondedBuilder(this._coinConfig).material(this._material);
   }
 
-  getWalletInitializationBuilder(): void {
-    throw new NotImplementedError(`walletInitialization for ${this._coinConfig.name} not implemented`);
+  getWalletInitializationBuilder(): RegisterDidWithCDDBuilder {
+    return this.getRegisterDidWithCDDBuilder();
   }
 
   from(rawTxn: string): TransactionBuilder<TxMethod, SupportedTransaction> {
diff --git a/modules/sdk-coin-polyx/src/polyx.ts b/modules/sdk-coin-polyx/src/polyx.ts
index e0b5d40dad..8373a4f9dc 100644
--- a/modules/sdk-coin-polyx/src/polyx.ts
+++ b/modules/sdk-coin-polyx/src/polyx.ts
@@ -345,6 +345,14 @@ export class Polyx extends SubstrateCoin {
     return { transactions: broadcastableTransactions, lastScanIndex };
   }
 
+  /**
+   * Polyx requires a wallet initialization transaction (RegisterDidWithCDD)
+   * to create an on-chain identity before the address can receive funds.
+   */
+  requiresWalletInitializationTransaction(): boolean {
+    return true;
+  }
+
   /**
    * Gets config for how token enablements work for this coin
    * @returns
diff --git a/modules/sdk-coin-polyx/test/unit/polyx.ts b/modules/sdk-coin-polyx/test/unit/polyx.ts
index a8a6c6f4d4..d2e9a9de1e 100644
--- a/modules/sdk-coin-polyx/test/unit/polyx.ts
+++ b/modules/sdk-coin-polyx/test/unit/polyx.ts
@@ -180,6 +180,20 @@ describe('Polyx:', function () {
     });
   });
 
+  describe('Address Creation Flow:', function () {
+    it('should require wallet initialization transaction', function () {
+      const mainCoin = bitgo.coin('polyx') as Polyx;
+      mainCoin.requiresWalletInitializationTransaction().should.equal(true);
+      baseCoin.requiresWalletInitializationTransaction().should.equal(true);
+    });
+
+    it('should return a RegisterDidWithCDDBuilder from getWalletInitializationBuilder', function () {
+      const { RegisterDidWithCDDBuilder } = require('../../src/lib');
+      const builder = baseCoin.getBuilder().getWalletInitializationBuilder();
+      builder.should.be.instanceOf(RegisterDidWithCDDBuilder);
+    });
+  });
+
   describe('Token Enablement:', function () {
     it('should have correct token enablement config', function () {
       const config = baseCoin.getTokenEnablementConfig();