diff --git a/modules/abstract-lightning/package.json b/modules/abstract-lightning/package.json
index 59508ef9c8..39cfb76435 100644
--- a/modules/abstract-lightning/package.json
+++ b/modules/abstract-lightning/package.json
@@ -39,7 +39,7 @@
     ]
   },
   "dependencies": {
-    "@bitgo/public-types": "6.66.0",
+    "@bitgo/public-types": "6.70.1",
     "@bitgo/sdk-core": "^38.15.0",
     "@bitgo/statics": "^59.15.0",
     "@bitgo/utxo-lib": "^11.24.4",
diff --git a/modules/abstract-utxo/src/abstractUtxoCoin.ts b/modules/abstract-utxo/src/abstractUtxoCoin.ts
index efd345ce1e..0b78eaf4c3 100644
--- a/modules/abstract-utxo/src/abstractUtxoCoin.ts
+++ b/modules/abstract-utxo/src/abstractUtxoCoin.ts
@@ -45,6 +45,7 @@ import {
   isValidXprv,
   DeriveAddressOptions,
   DeriveAddressResult,
+  UnifiedRecipientPreference,
 } from '@bitgo/sdk-core';
 
 import {
@@ -248,6 +249,8 @@ export interface TransactionParams extends BaseTransactionParams {
   /** Parameters for bridging intents (e.g. BTC -> sBTC peg-in), present when `type === 'bridging'`. */
   bridgingParams?: BridgingParams;
   qr?: boolean;
+  /** Zcash-only preference for resolving Unified Address recipients. */
+  unifiedRecipientPreference?: UnifiedRecipientPreference;
 }
 
 export interface ParseTransactionOptions<TNumber extends number | bigint = number> extends BaseParseTransactionOptions {
diff --git a/modules/abstract-utxo/src/impl/zec/recipients.ts b/modules/abstract-utxo/src/impl/zec/recipients.ts
index d56a4f88c9..bbb3b470cd 100644
--- a/modules/abstract-utxo/src/impl/zec/recipients.ts
+++ b/modules/abstract-utxo/src/impl/zec/recipients.ts
@@ -1,8 +1,9 @@
 import { fixedScriptWallet, zcashAddress } from '@bitgo/wasm-utxo';
+import type { UnifiedRecipientPreference } from '@bitgo/sdk-core';
 
 import { getReplayProtectionPubkeys } from '../../transaction/fixedScript/replayProtection';
 
-import { ZcashCoinName, UnifiedRecipientPreference } from './types';
+import { ZcashCoinName } from './types';
 
 /**
  * How a recipient parsed from a Zcash PSBT is spent.
diff --git a/modules/abstract-utxo/src/impl/zec/types.ts b/modules/abstract-utxo/src/impl/zec/types.ts
index 30ea4b3aba..ffb5747a9b 100644
--- a/modules/abstract-utxo/src/impl/zec/types.ts
+++ b/modules/abstract-utxo/src/impl/zec/types.ts
@@ -1,5 +1,2 @@
 /** A Zcash coin name — the only UTXO coins with shielded (Orchard/Ironwood) support. */
 export type ZcashCoinName = 'zec' | 'tzec';
-
-/** How a Zcash Unified Address recipient should be resolved: to its shielded (Orchard/Ironwood) receiver or its transparent receiver. */
-export type UnifiedRecipientPreference = 'shielded' | 'transparent';
diff --git a/modules/bitgo/package.json b/modules/bitgo/package.json
index 849dd5b49a..74f24c6c43 100644
--- a/modules/bitgo/package.json
+++ b/modules/bitgo/package.json
@@ -144,7 +144,7 @@
     "superagent": "^9.0.1"
   },
   "devDependencies": {
-    "@bitgo/public-types": "6.66.0",
+    "@bitgo/public-types": "6.70.1",
     "@bitgo/sdk-opensslbytes": "^2.1.0",
     "@bitgo/sdk-test": "^9.1.76",
     "@openpgp/web-stream-tools": "0.0.14",
diff --git a/modules/express/package.json b/modules/express/package.json
index d902a50540..3eb596b322 100644
--- a/modules/express/package.json
+++ b/modules/express/package.json
@@ -60,7 +60,7 @@
     "superagent": "^9.0.1"
   },
   "devDependencies": {
-    "@bitgo/public-types": "6.66.0",
+    "@bitgo/public-types": "6.70.1",
     "@bitgo/sdk-lib-mpc": "^10.20.0",
     "@bitgo/sdk-test": "^9.1.76",
     "@types/argparse": "^1.0.36",
diff --git a/modules/passkey-crypto/package.json b/modules/passkey-crypto/package.json
index c6db98548d..08ebba4ec9 100644
--- a/modules/passkey-crypto/package.json
+++ b/modules/passkey-crypto/package.json
@@ -35,7 +35,7 @@
     "access": "public"
   },
   "dependencies": {
-    "@bitgo/public-types": "6.66.0",
+    "@bitgo/public-types": "6.70.1",
     "@bitgo/sdk-core": "^38.15.0"
   },
   "devDependencies": {
diff --git a/modules/sdk-coin-flrp/package.json b/modules/sdk-coin-flrp/package.json
index 1805bc16a1..a8ffd0fd9f 100644
--- a/modules/sdk-coin-flrp/package.json
+++ b/modules/sdk-coin-flrp/package.json
@@ -48,7 +48,7 @@
     "nock": "^13.3.1"
   },
   "dependencies": {
-    "@bitgo/public-types": "6.66.0",
+    "@bitgo/public-types": "6.70.1",
     "@bitgo/sdk-core": "^38.15.0",
     "@bitgo/secp256k1": "^1.11.1",
     "@bitgo/statics": "^59.15.0",
diff --git a/modules/sdk-coin-sol/package.json b/modules/sdk-coin-sol/package.json
index c4feaf54f3..d11691c566 100644
--- a/modules/sdk-coin-sol/package.json
+++ b/modules/sdk-coin-sol/package.json
@@ -57,7 +57,7 @@
   },
   "dependencies": {
     "@bitgo/logger": "^1.4.0",
-    "@bitgo/public-types": "6.66.0",
+    "@bitgo/public-types": "6.70.1",
     "@bitgo/sdk-core": "^38.15.0",
     "@bitgo/sdk-lib-mpc": "^10.20.0",
     "@bitgo/statics": "^59.15.0",
diff --git a/modules/sdk-core/package.json b/modules/sdk-core/package.json
index 0c4ba50950..09abac95ce 100644
--- a/modules/sdk-core/package.json
+++ b/modules/sdk-core/package.json
@@ -40,7 +40,7 @@
     ]
   },
   "dependencies": {
-    "@bitgo/public-types": "6.66.0",
+    "@bitgo/public-types": "6.70.1",
     "@bitgo/sdk-lib-mpc": "^10.20.0",
     "@bitgo/secp256k1": "^1.11.1",
     "@bitgo/sjcl": "^1.1.0",
diff --git a/modules/sdk-core/src/bitgo/baseCoin/iBaseCoin.ts b/modules/sdk-core/src/bitgo/baseCoin/iBaseCoin.ts
index 74be73ca27..5bd62a8eeb 100644
--- a/modules/sdk-core/src/bitgo/baseCoin/iBaseCoin.ts
+++ b/modules/sdk-core/src/bitgo/baseCoin/iBaseCoin.ts
@@ -11,7 +11,7 @@ import EddsaUtils, { EddsaMPCv2Utils, PrebuildTransactionWithIntentOptions, TxRe
 import { RedpallasMPCv2Utils } from '../utils/tss/redpallas';
 import { CreateAddressFormat, CustomSigningFunction, IWallet, IWallets, Memo, Wallet, WalletData } from '../wallet';
 
-import { TokenEnablement } from '@bitgo/public-types';
+import { TokenEnablement, unifiedAddressPreference } from '@bitgo/public-types';
 import { Hash } from 'crypto';
 import { TransactionType } from '../../account-lib';
 import { IInscriptionBuilder } from '../inscriptionBuilder';
@@ -356,8 +356,15 @@ export interface FeeEstimateOptions {
   type?: keyof typeof TransactionType;
 }
 
+/** How a Zcash Unified Address recipient should be resolved. */
+export type UnifiedRecipientPreference = unifiedAddressPreference;
+
 // TODO (SDKT-9): reverse engineer and add options
 export interface ExtraPrebuildParamsOptions {
+  /**
+   * how to resolve a Unified Address recipient (`'shielded'` or `'transparent'`).
+   */
+  unifiedRecipientPreference?: UnifiedRecipientPreference;
   [index: string]: unknown;
 }
 
diff --git a/modules/sdk-core/src/bitgo/wallet/BuildParams.ts b/modules/sdk-core/src/bitgo/wallet/BuildParams.ts
index 1935a05d2c..2543408d7f 100644
--- a/modules/sdk-core/src/bitgo/wallet/BuildParams.ts
+++ b/modules/sdk-core/src/bitgo/wallet/BuildParams.ts
@@ -1,6 +1,7 @@
 /* eslint no-redeclare: off */
 
 import * as t from 'io-ts';
+import { unifiedAddressPreference } from '@bitgo/public-types';
 import { getCodecProperties } from '../utils/codecProps';
 
 export const Bip322Message = t.type({
@@ -39,6 +40,10 @@ export const BuildParamsUTXO = t.partial({
   isReplaceableByFee: t.boolean,
   messages: t.array(Bip322Message),
   qr: t.boolean,
+  /**
+   * how to resolve a Unified Address recipient for zec.
+   */
+  unifiedRecipientPreference: unifiedAddressPreference,
 });
 
 export const BuildParamsStacks = t.partial({
diff --git a/modules/sdk-core/src/bitgo/wallet/iWallet.ts b/modules/sdk-core/src/bitgo/wallet/iWallet.ts
index 9741ea9c10..435599da12 100644
--- a/modules/sdk-core/src/bitgo/wallet/iWallet.ts
+++ b/modules/sdk-core/src/bitgo/wallet/iWallet.ts
@@ -11,6 +11,7 @@ import {
   VerificationOptions,
   TypedData,
   NFTTransferOptions,
+  UnifiedRecipientPreference,
 } from '../baseCoin';
 import { BitGoBase } from '../bitgoBase';
 import { Keychain, KeychainWithEncryptedPrv } from '../keychain';
@@ -230,6 +231,10 @@ export interface PrebuildTransactionOptions {
    * the legacy format defined by bitcoinjs-lib, or the 'psbt' format, which follows the BIP-174.
    */
   txFormat?: 'legacy' | 'psbt' | 'psbt-lite';
+  /**
+   * how to resolve a Unified Address recipient for zec.
+   */
+  unifiedRecipientPreference?: UnifiedRecipientPreference;
   /**
    * Custom Solana instructions to include in the transaction.
    * Each instruction contains a program ID, accounts array, and data buffer.
diff --git a/yarn.lock b/yarn.lock
index 41c57b723d..b4ad55ece1 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1021,10 +1021,10 @@
     "@scure/base" "1.1.5"
     micro-eth-signer "0.7.2"
 
-"@bitgo/public-types@6.66.0":
-  version "6.66.0"
-  resolved "https://registry.npmjs.org/@bitgo/public-types/-/public-types-6.66.0.tgz#d8ea3da33c22403d9258fe1c760163d18c8d763d"
-  integrity sha512-7WsFUX7aIB9yTHCP18iLZThp8O1BsMrQUiwzuEgcBApqDlv/9OnGv87ytLNG2jPTyH3soYjjBWziTQJQFEaPXw==
+"@bitgo/public-types@6.70.1":
+  version "6.70.1"
+  resolved "https://registry.npmjs.org/@bitgo/public-types/-/public-types-6.70.1.tgz#197f2ecc93b8d8bf144c4985a412d91dc346220d"
+  integrity sha512-s3LRKnks3RxJYq+U5zZquNol3HqXXoK788JkszKs4HG1lTvINLqPbYHPnl+Qj0ta6mLQ8EvEKEmL2LFlJIC1pw==
   dependencies:
     fp-ts "^2.0.0"
     io-ts "npm:@bitgo-forks/io-ts@2.1.4"