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 4b19508a1d9..f27a41da2c4 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
@@ -17,10 +17,10 @@ Generated by [AVA](https://avajs.dev).
         {
           chainPolicies: {
             Arbitrum: {
+              attenuatedCttpBridgeAddress: '0xe298b93ffB5eA1FB628e0C0D55A43aeaC268e347',
               cctpTokenMessengerAddress: '0x19330d10D9Cc8751218eaf51E8885D058642E08A',
               chainId: 42161,
               confirmations: 2,
-              nobleContractAddress: '0x19330d10D9Cc8751218eaf51E8885D058642E08A',
             },
           },
           nobleAgoricChannelId: 'channel-21',
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 0245ac61053..4647d12715f 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 a645f90bae4..ebc50505267 100644
--- a/packages/fast-usdc/src/type-guards.js
+++ b/packages/fast-usdc/src/type-guards.js
@@ -94,16 +94,13 @@ export const PoolMetricsShape = {
 harden(PoolMetricsShape);
 
 /** @type {TypedPattern<ChainPolicy>} */
-export const ChainPoliciesShape = M.splitRecord(
-  {
-    nobleContractAddress: EvmHashShape,
-    cctpTokenMessengerAddress: EvmHashShape,
-    confirmations: M.number(),
-    chainId: M.number(),
-  },
-  { chainType: M.number() },
-);
-harden(ChainPoliciesShape);
+export const ChainPolicyShape = {
+  attenuatedCttpBridgeAddress: EvmHashShape,
+  cctpTokenMessengerAddress: EvmHashShape,
+  confirmations: M.number(),
+  chainId: M.number(),
+};
+harden(ChainPolicyShape);
 
 /**
  * @type {TypedPattern<FeedPolicy>}
@@ -115,7 +112,7 @@ export const FeedPolicyShape = M.splitRecord(
   {
     nobleDomainId: M.number(),
     nobleAgoricChannelId: M.string(),
-    chainPolicies: M.recordOf(M.string(), ChainPoliciesShape),
+    chainPolicies: M.recordOf(M.string(), ChainPolicyShape),
   },
   { eventFilter: M.string() },
 );
diff --git a/packages/fast-usdc/src/types.ts b/packages/fast-usdc/src/types.ts
index ee9a90efffd..2173b4e42e8 100644
--- a/packages/fast-usdc/src/types.ts
+++ b/packages/fast-usdc/src/types.ts
@@ -58,11 +58,14 @@ export interface PoolMetrics extends PoolStats {
 }
 
 export interface ChainPolicy {
-  nobleContractAddress: EvmHash;
+  /** `msg.sender` of DepositAndBurn to TokenMessenger must be an attenuated wrapper contract that does not contain `replaceDepositForBurn` */
+  attenuatedCttpBridgeAddress: EvmHash;
+  /** @see {@link https://developers.circle.com/stablecoins/evm-smart-contracts} */
   cctpTokenMessengerAddress: EvmHash;
+  /** the number of block confirmations to observe before reporting */
   confirmations: number;
+  /** e.g., `1` for ETH mainnet 42161 for Arbitrum One. @see {@link https://chainlist.org/} */
   chainId: EvmChainID;
-  chainType?: number;
 }
 
 export interface FeedPolicy {
diff --git a/packages/fast-usdc/src/utils/deploy-config.js b/packages/fast-usdc/src/utils/deploy-config.js
index 653d95ff293..7b160a7996c 100644
--- a/packages/fast-usdc/src/utils/deploy-config.js
+++ b/packages/fast-usdc/src/utils/deploy-config.js
@@ -64,11 +64,12 @@ export const configurations = {
       nobleDomainId: 4,
       chainPolicies: {
         Arbitrum: {
+          attenuatedCttpBridgeAddress:
+            '0xe298b93ffB5eA1FB628e0C0D55A43aeaC268e347',
           cctpTokenMessengerAddress:
             '0x19330d10D9Cc8751218eaf51E8885D058642E08A',
           chainId: 42161,
           confirmations: 2,
-          nobleContractAddress: '0x19330d10D9Cc8751218eaf51E8885D058642E08A',
         },
       },
     },
@@ -92,11 +93,12 @@ export const configurations = {
       nobleDomainId: 4,
       chainPolicies: {
         Arbitrum: {
+          attenuatedCttpBridgeAddress:
+            '0xe298b93ffB5eA1FB628e0C0D55A43aeaC268e347',
           cctpTokenMessengerAddress:
             '0x19330d10D9Cc8751218eaf51E8885D058642E08A',
           chainId: 42161,
           confirmations: 2,
-          nobleContractAddress: '0x19330d10D9Cc8751218eaf51E8885D058642E08A',
         },
       },
     },
@@ -118,10 +120,10 @@ export const configurations = {
       nobleDomainId: 4,
       chainPolicies: {
         Arbitrum: {
+          attenuatedCttpBridgeAddress: '0xTODO',
           cctpTokenMessengerAddress: '0xTODO',
           chainId: 421614,
           confirmations: 2,
-          nobleContractAddress: '0xTODO',
         },
       },
     },
@@ -140,10 +142,10 @@ export const configurations = {
       nobleDomainId: 4,
       chainPolicies: {
         Arbitrum: {
+          attenuatedCttpBridgeAddress: '0xTODO',
           cctpTokenMessengerAddress: '0xTODO',
           chainId: 421614,
           confirmations: 2,
-          nobleContractAddress: '0xTODO',
         },
       },
     },