chore(sdk-coin-polyx): export utils for UI

Ticket: WIN-8664

TICKET: WIN-8664

Author: nvrakesh06

examples/js/.DS_Store

@@ -25,3 +25,12 @@ export { Utils, default as utils } from './utils';
 export * from './iface';
 
 export { BondArgs, NominateArgs, BatchCallObject, BatchArgs } from './iface';
+
+/**
+ * Checks if a string is a valid Polymesh DID (Decentralized Identifier)
+ * DIDs are 32-byte hex strings (0x prefix + 64 hex characters)
+ *
+ * @param {string} did - The string to validate
+ * @returns {boolean} true if valid DID format, false otherwise
+ */
+export const isValidDid = (did: string): boolean => utils.isValidDid(did);

modules/abstract-utxo/.DS_Store

@@ -17,6 +17,17 @@ export class Utils extends SubstrateUtils {
     return isMainnet ? 12 : 42;
   }
 
+  /**
+   * Checks if a string is a valid Polymesh DID (Decentralized Identifier)
+   * DIDs are 32-byte hex strings (0x prefix + 64 hex characters)
+   *
+   * @param {string} did - The string to validate
+   * @returns {boolean} true if valid DID format, false otherwise
+   */
+  isValidDid(did: string): boolean {
+    return /^0x[a-fA-F0-9]{64}$/.test(did);
+  }
+
   getMaterial(networkType: NetworkType): Interface.Material {
     return (networkType === NetworkType.MAINNET ? mainnetMaterial : testnetMaterial) as unknown as Interface.Material;
   }

modules/sdk-coin-polyx/src/lib/index.ts

@@ -653,6 +653,7 @@ export const POLYX_FEATURES = [
   CoinFeature.STAKING,
   CoinFeature.SUPPORTS_TOKENS,
   CoinFeature.STUCK_TRANSACTION_MANAGEMENT_TSS,
+  CoinFeature.ALTERNATIVE_ADDRESS_IDENTIFIER,
 ];
 
 export const POLYX_TOKEN_FEATURES = [