diff --git a/packages/boot/test/fast-usdc/snapshots/fast-usdc.test.ts.md b/packages/boot/test/fast-usdc/snapshots/fast-usdc.test.ts.md
index 8c2eda981f40..68ea14d4de85 100644
--- a/packages/boot/test/fast-usdc/snapshots/fast-usdc.test.ts.md
+++ b/packages/boot/test/fast-usdc/snapshots/fast-usdc.test.ts.md
@@ -17,7 +17,9 @@ Generated by [AVA](https://avajs.dev).
         {
           chainPolicies: {
             Arbitrum: {
-              attenuatedCttpBridgeAddress: '0xe298b93ffB5eA1FB628e0C0D55A43aeaC268e347',
+              attenuatedCttpBridgeAddresses: [
+                '0xe298b93ffB5eA1FB628e0C0D55A43aeaC268e347',
+              ],
               cctpTokenMessengerAddress: '0x19330d10D9Cc8751218eaf51E8885D058642E08A',
               chainId: 42161,
               confirmations: 2,
@@ -28,7 +30,9 @@ Generated by [AVA](https://avajs.dev).
               },
             },
             Base: {
-              attenuatedCttpBridgeAddress: '0xB6615B2662b35fc3533F8479002e62D0523341De',
+              attenuatedCttpBridgeAddresses: [
+                '0xB6615B2662b35fc3533F8479002e62D0523341De',
+              ],
               cctpTokenMessengerAddress: '0x1682Ae6375C4E4A97e4B583BC394c861A46D8962',
               chainId: 8453,
               confirmations: 2,
@@ -39,7 +43,9 @@ Generated by [AVA](https://avajs.dev).
               },
             },
             Ethereum: {
-              attenuatedCttpBridgeAddress: '0xBC8552339dA68EB65C8b88B414B5854E0E366cFc',
+              attenuatedCttpBridgeAddresses: [
+                '0xBC8552339dA68EB65C8b88B414B5854E0E366cFc',
+              ],
               cctpTokenMessengerAddress: '0xBd3fa81B58Ba92a82136038B25aDec7066af3155',
               chainId: 1,
               confirmations: 2,
@@ -50,7 +56,9 @@ Generated by [AVA](https://avajs.dev).
               },
             },
             Optimism: {
-              attenuatedCttpBridgeAddress: '0x48C5417ED570928eC85D5e3AD4e7E0EeD7dB1E2A',
+              attenuatedCttpBridgeAddresses: [
+                '0x48C5417ED570928eC85D5e3AD4e7E0EeD7dB1E2A',
+              ],
               cctpTokenMessengerAddress: '0x2B4069517957735bE00ceE0fadAE88a26365528f',
               chainId: 10,
               confirmations: 2,
@@ -61,7 +69,9 @@ Generated by [AVA](https://avajs.dev).
               },
             },
             Polygon: {
-              attenuatedCttpBridgeAddress: '0x32cb9574650AFF312c80edc4B4343Ff5500767cA',
+              attenuatedCttpBridgeAddresses: [
+                '0x32cb9574650AFF312c80edc4B4343Ff5500767cA',
+              ],
               cctpTokenMessengerAddress: '0x9daF8c91AEFAE50b9c0E69629D3F6Ca40cA3B3FE',
               chainId: 137,
               confirmations: 2,
diff --git a/packages/boot/test/fast-usdc/snapshots/fast-usdc.test.ts.snap b/packages/boot/test/fast-usdc/snapshots/fast-usdc.test.ts.snap
index 1bb5a5dc63b7..852bea26923c 100644
Binary files a/packages/boot/test/fast-usdc/snapshots/fast-usdc.test.ts.snap and b/packages/boot/test/fast-usdc/snapshots/fast-usdc.test.ts.snap differ
diff --git a/packages/fast-usdc/src/type-guards.js b/packages/fast-usdc/src/type-guards.js
index 778e4c84a6a4..5ece98c4ac94 100644
--- a/packages/fast-usdc/src/type-guards.js
+++ b/packages/fast-usdc/src/type-guards.js
@@ -122,7 +122,11 @@ harden(PoolMetricsShape);
 
 /** @type {TypedPattern<ChainPolicy>} */
 export const ChainPolicyShape = {
-  attenuatedCttpBridgeAddress: EvmHashShape,
+  attenuatedCttpBridgeAddresses: M.splitArray(
+    [EvmHashShape],
+    undefined,
+    M.arrayOf(EvmHashShape),
+  ),
   cctpTokenMessengerAddress: EvmHashShape,
   confirmations: M.number(),
   chainId: M.number(),
diff --git a/packages/fast-usdc/src/types.ts b/packages/fast-usdc/src/types.ts
index b169ea48a17b..bc9bf5cd4ca5 100644
--- a/packages/fast-usdc/src/types.ts
+++ b/packages/fast-usdc/src/types.ts
@@ -82,7 +82,7 @@ export interface PoolMetrics extends PoolStats {
 
 export interface ChainPolicy {
   /** `msg.sender` of DepositAndBurn to TokenMessenger must be an attenuated wrapper contract that does not contain `replaceDepositForBurn` */
-  attenuatedCttpBridgeAddress: EvmHash;
+  attenuatedCttpBridgeAddresses: EvmHash[];
   /** @see {@link https://developers.circle.com/stablecoins/evm-smart-contracts} */
   cctpTokenMessengerAddress: EvmHash;
   /** e.g., `1` for ETH mainnet 42161 for Arbitrum One. @see {@link https://chainlist.org/} */
diff --git a/packages/fast-usdc/src/utils/chain-policies.js b/packages/fast-usdc/src/utils/chain-policies.js
index 192e7cae4aed..cc52dc045f4e 100644
--- a/packages/fast-usdc/src/utils/chain-policies.js
+++ b/packages/fast-usdc/src/utils/chain-policies.js
@@ -4,7 +4,9 @@
 export const ChainPolicies = /** @type {const} */ ({
   MAINNET: {
     Arbitrum: {
-      attenuatedCttpBridgeAddress: '0xe298b93ffB5eA1FB628e0C0D55A43aeaC268e347',
+      attenuatedCttpBridgeAddresses: [
+        '0xe298b93ffB5eA1FB628e0C0D55A43aeaC268e347',
+      ],
       cctpTokenMessengerAddress: '0x19330d10D9Cc8751218eaf51E8885D058642E08A',
       chainId: 42161,
       // TODO confirm confirmations and rateLimits
@@ -16,7 +18,9 @@ export const ChainPolicies = /** @type {const} */ ({
       },
     },
     Base: {
-      attenuatedCttpBridgeAddress: '0xB6615B2662b35fc3533F8479002e62D0523341De',
+      attenuatedCttpBridgeAddresses: [
+        '0xB6615B2662b35fc3533F8479002e62D0523341De',
+      ],
       cctpTokenMessengerAddress: '0x1682Ae6375C4E4A97e4B583BC394c861A46D8962',
       chainId: 8453,
       // TODO confirm confirmations and rateLimits
@@ -28,7 +32,9 @@ export const ChainPolicies = /** @type {const} */ ({
       },
     },
     Ethereum: {
-      attenuatedCttpBridgeAddress: '0xBC8552339dA68EB65C8b88B414B5854E0E366cFc',
+      attenuatedCttpBridgeAddresses: [
+        '0xBC8552339dA68EB65C8b88B414B5854E0E366cFc',
+      ],
       cctpTokenMessengerAddress: '0xBd3fa81B58Ba92a82136038B25aDec7066af3155',
       chainId: 1,
       // TODO confirm confirmations and rateLimits
@@ -40,7 +46,9 @@ export const ChainPolicies = /** @type {const} */ ({
       },
     },
     Optimism: {
-      attenuatedCttpBridgeAddress: '0x48C5417ED570928eC85D5e3AD4e7E0EeD7dB1E2A',
+      attenuatedCttpBridgeAddresses: [
+        '0x48C5417ED570928eC85D5e3AD4e7E0EeD7dB1E2A',
+      ],
       cctpTokenMessengerAddress: '0x2B4069517957735bE00ceE0fadAE88a26365528f',
       chainId: 10,
       // TODO confirm confirmations and rateLimits
@@ -52,7 +60,9 @@ export const ChainPolicies = /** @type {const} */ ({
       },
     },
     Polygon: {
-      attenuatedCttpBridgeAddress: '0x32cb9574650AFF312c80edc4B4343Ff5500767cA',
+      attenuatedCttpBridgeAddresses: [
+        '0x32cb9574650AFF312c80edc4B4343Ff5500767cA',
+      ],
       cctpTokenMessengerAddress: '0x9daF8c91AEFAE50b9c0E69629D3F6Ca40cA3B3FE',
       chainId: 137,
       // TODO confirm confirmations and rateLimits
@@ -67,7 +77,7 @@ export const ChainPolicies = /** @type {const} */ ({
   TESTNET: {
     // Arbitrum Sepolia
     Arbitrum: {
-      attenuatedCttpBridgeAddress: '0xTODO',
+      attenuatedCttpBridgeAddresses: ['0xTODO'],
       cctpTokenMessengerAddress: '0x9f3B8679c73C2Fef8b59B4f3444d4e156fb70AA5',
       chainId: 421614,
       confirmations: 2,
@@ -79,7 +89,7 @@ export const ChainPolicies = /** @type {const} */ ({
     },
     // Base Sepolia
     Base: {
-      attenuatedCttpBridgeAddress: '0xTODO',
+      attenuatedCttpBridgeAddresses: ['0xTODO'],
       cctpTokenMessengerAddress: '0x9f3B8679c73C2Fef8b59B4f3444d4e156fb70AA5',
       chainId: 84532,
       confirmations: 2,
@@ -91,7 +101,7 @@ export const ChainPolicies = /** @type {const} */ ({
     },
     // Ethereum Sepolia
     Ethereum: {
-      attenuatedCttpBridgeAddress: '0xTODO',
+      attenuatedCttpBridgeAddresses: ['0xTODO'],
       cctpTokenMessengerAddress: '0x9f3B8679c73C2Fef8b59B4f3444d4e156fb70AA5',
       chainId: 11155111,
       confirmations: 2,
@@ -103,7 +113,7 @@ export const ChainPolicies = /** @type {const} */ ({
     },
     // OP Sepolia
     Optimism: {
-      attenuatedCttpBridgeAddress: '0xTODO',
+      attenuatedCttpBridgeAddresses: ['0xTODO'],
       cctpTokenMessengerAddress: '0x9f3B8679c73C2Fef8b59B4f3444d4e156fb70AA5',
       chainId: 11155420,
       confirmations: 2,
@@ -115,7 +125,7 @@ export const ChainPolicies = /** @type {const} */ ({
     },
     // Polygon PoS Amoy
     Polygon: {
-      attenuatedCttpBridgeAddress: '0xTODO',
+      attenuatedCttpBridgeAddresses: ['0xTODO'],
       cctpTokenMessengerAddress: '0x9f3B8679c73C2Fef8b59B4f3444d4e156fb70AA5',
       chainId: 80002,
       confirmations: 2,
diff --git a/packages/fast-usdc/test/type-guards.test.ts b/packages/fast-usdc/test/type-guards.test.ts
index 6838092165ea..4528d3caa7c4 100644
--- a/packages/fast-usdc/test/type-guards.test.ts
+++ b/packages/fast-usdc/test/type-guards.test.ts
@@ -2,10 +2,15 @@ import { test } from '@agoric/zoe/tools/prepare-test-env-ava.js';
 
 import { M, mustMatch } from '@endo/patterns';
 import { TxStatus, PendingTxStatus } from '../src/constants.js';
-import { CctpTxEvidenceShape, PendingTxShape } from '../src/type-guards.js';
-import type { CctpTxEvidence } from '../src/types.js';
+import {
+  CctpTxEvidenceShape,
+  ChainPolicyShape,
+  PendingTxShape,
+} from '../src/type-guards.js';
+import type { CctpTxEvidence, ChainPolicy } from '../src/types.js';
 
 import { MockCctpTxEvidences } from './fixtures.js';
+import { ChainPolicies } from '../src/utils/chain-policies.js';
 
 test('CctpTxEvidenceShape', t => {
   const specimen: CctpTxEvidence = harden(
@@ -37,3 +42,46 @@ test('PendingTxShape', t => {
     ),
   );
 });
+
+test('ChainPolicyShape', t => {
+  const policy: ChainPolicy = harden({
+    attenuatedCttpBridgeAddresses: [
+      '0xe298b93ffB5eA1FB628e0C0D55A43aeaC268e347',
+    ],
+    rateLimits: {
+      blockWindow: 20_000_000_000n,
+      blockWindowSize: 10,
+      tx: 10_000_000_000n,
+    },
+    cctpTokenMessengerAddress: '0x19330d10D9Cc8751218eaf51E8885D058642E08A',
+    chainId: 42161,
+    confirmations: 2,
+  });
+  t.notThrows(() => mustMatch(policy, ChainPolicyShape));
+
+  const a = policy.attenuatedCttpBridgeAddresses[0];
+  const twoAddrs = harden({
+    ...policy,
+    attenuatedCttpBridgeAddresses: [a, a],
+  });
+  t.notThrows(() => mustMatch(twoAddrs, ChainPolicyShape));
+
+  const threeAddrs = harden({
+    ...policy,
+    attenuatedCttpBridgeAddresses: [a, a, a],
+  });
+  t.notThrows(() => mustMatch(threeAddrs, ChainPolicyShape));
+
+  t.notThrows(() =>
+    mustMatch(
+      harden(Object.values(ChainPolicies.MAINNET)),
+      M.arrayOf(ChainPolicyShape),
+    ),
+  );
+
+  const noAddrs = harden({
+    ...policy,
+    attenuatedCttpBridgeAddresses: [],
+  });
+  t.throws(() => mustMatch(noAddrs, ChainPolicyShape));
+});