diff --git a/packages/orchestration/src/examples/stakeBld.contract.js b/packages/orchestration/src/examples/stakeBld.contract.js
index 82952d356058..1651a3a58d4b 100644
--- a/packages/orchestration/src/examples/stakeBld.contract.js
+++ b/packages/orchestration/src/examples/stakeBld.contract.js
@@ -12,7 +12,7 @@ import { deeplyFulfilled } from '@endo/marshal';
 import { M } from '@endo/patterns';
 import { prepareLocalOrchestrationAccountKit } from '../exos/local-orchestration-account.js';
 import { makeChainHub } from '../exos/chain-hub.js';
-import { makeTimestampHelper } from '../exos/time.js';
+import { makeTimeHelper } from '../exos/time-helper.js';
 
 /**
  * @import {NameHub} from '@agoric/vats';
@@ -50,7 +50,7 @@ export const start = async (zcf, privateArgs, baggage) => {
     privateArgs.timerService,
     vowTools,
     makeChainHub(privateArgs.agoricNames),
-    makeTimestampHelper(privateArgs.timerService),
+    makeTimeHelper(privateArgs.timerService),
   );
 
   // ----------------
diff --git a/packages/orchestration/src/exos/local-orchestration-account.js b/packages/orchestration/src/exos/local-orchestration-account.js
index 00a214c321a5..90bab091473e 100644
--- a/packages/orchestration/src/exos/local-orchestration-account.js
+++ b/packages/orchestration/src/exos/local-orchestration-account.js
@@ -26,7 +26,7 @@ import { orchestrationAccountMethods } from '../utils/orchestrationAccount.js';
  * @import {PromiseVow, VowTools} from '@agoric/vow';
  * @import {TypedJson} from '@agoric/cosmic-proto';
  * @import {ChainHub} from './chain-hub.js';
- * @import {TimestampHelper} from './time.js';
+ * @import {TimeHelper} from './time-helper.js';
  */
 
 const trace = makeTracer('LOA');
@@ -66,7 +66,7 @@ const PUBLIC_TOPICS = {
  * @param {Remote<TimerService>} timerService
  * @param {VowTools} vowTools
  * @param {ChainHub} chainHub
- * @param {TimestampHelper} timestampHelper
+ * @param {TimeHelper} timeHelper
  */
 export const prepareLocalOrchestrationAccountKit = (
   zone,
@@ -75,7 +75,7 @@ export const prepareLocalOrchestrationAccountKit = (
   timerService,
   { watch, when, allVows },
   chainHub,
-  timestampHelper,
+  timeHelper,
 ) =>
   /** Make an object wrapping an LCA with Zoe interfaces. */
   zone.exoClassKit(
@@ -403,7 +403,7 @@ export const prepareLocalOrchestrationAccountKit = (
           // TODO #9324 what's a reasonable default? currently 5 minutes
           // FIXME: do not call `getTimeoutTimestampNS` if `opts.timeoutTimestamp` or `opts.timeoutHeight` is provided
           const timeoutTimestampV = watch(
-            timestampHelper.getTimeoutTimestampNS(),
+            timeHelper.getTimeoutTimestampNS(),
             this.facets.getTimeoutTimestampWatcher,
             { opts },
           );
diff --git a/packages/orchestration/src/exos/time.js b/packages/orchestration/src/exos/time-helper.js
similarity index 87%
rename from packages/orchestration/src/exos/time.js
rename to packages/orchestration/src/exos/time-helper.js
index e5982d26219e..e2bb3694138c 100644
--- a/packages/orchestration/src/exos/time.js
+++ b/packages/orchestration/src/exos/time-helper.js
@@ -20,21 +20,22 @@ export const NANOSECONDS_PER_SECOND = 1_000_000_000n;
  * @param {Zone} [zone]
  */
 
-export const makeTimestampHelper = (timerService, zone = makeHeapZone()) => {
+export const makeTimeHelper = (timerService, zone = makeHeapZone()) => {
   /** @type {TimerBrand | undefined} */
   let brandCache;
   const getBrand = () => {
     if (brandCache) return brandCache;
     return watch(E(timerService).getTimerBrand(), {
       onFulfilled: timerBrand => {
+        brandCache = timerBrand;
         return timerBrand;
       },
     });
   };
 
   return zone.exo(
-    'Timestamp Helper',
-    M.interface('TimeStampHelperI', {
+    'Time Helper',
+    M.interface('TimeHelperI', {
       getTimeoutTimestampNS: M.call()
         .optional(RelativeTimeRecordShape)
         .returns(VowShape),
@@ -53,7 +54,7 @@ export const makeTimestampHelper = (timerService, zone = makeHeapZone()) => {
         return watch(
           allVows([E(timerService).getCurrentTimestamp(), getBrand()]),
           {
-            /** @param {[TimestampRecord, TimerBrand]} r */
+            /** @param {[TimestampRecord, TimerBrand]} results */
             onFulfilled([currentTime, timerBrand]) {
               const timeout =
                 relativeTime ||
@@ -73,4 +74,4 @@ export const makeTimestampHelper = (timerService, zone = makeHeapZone()) => {
   );
 };
 
-/** @typedef {Awaited<ReturnType<typeof makeTimestampHelper>>} TimestampHelper */
+/** @typedef {Awaited<ReturnType<typeof makeTimeHelper>>} TimeHelper */
diff --git a/packages/orchestration/src/utils/start-helper.js b/packages/orchestration/src/utils/start-helper.js
index bbc57260136a..5bf1c6a8e28a 100644
--- a/packages/orchestration/src/utils/start-helper.js
+++ b/packages/orchestration/src/utils/start-helper.js
@@ -8,7 +8,7 @@ import { makeChainHub } from '../exos/chain-hub.js';
 import { prepareRemoteChainFacade } from '../exos/remote-chain-facade.js';
 import { prepareCosmosOrchestrationAccount } from '../exos/cosmos-orchestration-account.js';
 import { prepareLocalChainFacade } from '../exos/local-chain-facade.js';
-import { makeTimestampHelper } from '../exos/time.js';
+import { makeTimeHelper } from '../exos/time-helper.js';
 
 /**
  * @import {PromiseKit} from '@endo/promise-kit'
@@ -48,7 +48,7 @@ export const provideOrchestration = (
   const zone = makeDurableZone(baggage);
 
   const chainHub = makeChainHub(remotePowers.agoricNames);
-  const timestampHelper = makeTimestampHelper(remotePowers.timerService);
+  const timeHelper = makeTimeHelper(remotePowers.timerService);
 
   const vowTools = prepareVowTools(zone.subZone('vows'));
 
@@ -60,7 +60,7 @@ export const provideOrchestration = (
     remotePowers.timerService,
     vowTools,
     chainHub,
-    timestampHelper,
+    timeHelper,
   );
 
   const asyncFlowTools = prepareAsyncFlowTools(zone.subZone('asyncFlow'), {
diff --git a/packages/orchestration/test/exos/local-orchestration-account-kit.test.ts b/packages/orchestration/test/exos/local-orchestration-account-kit.test.ts
index 00dae4c6764f..09e75f88cfa8 100644
--- a/packages/orchestration/test/exos/local-orchestration-account-kit.test.ts
+++ b/packages/orchestration/test/exos/local-orchestration-account-kit.test.ts
@@ -9,9 +9,9 @@ import { prepareLocalOrchestrationAccountKit } from '../../src/exos/local-orches
 import { ChainAddress } from '../../src/orchestration-api.js';
 import { makeChainHub } from '../../src/exos/chain-hub.js';
 import {
-  makeTimestampHelper,
+  makeTimeHelper,
   NANOSECONDS_PER_SECOND,
-} from '../../src/exos/time.js';
+} from '../../src/exos/time-helper.js';
 import { commonSetup } from '../supports.js';
 
 test('deposit, withdraw', async t => {
@@ -37,7 +37,7 @@ test('deposit, withdraw', async t => {
     timer,
     vowTools,
     makeChainHub(bootstrap.agoricNames),
-    makeTimestampHelper(timer),
+    makeTimeHelper(timer),
   );
 
   t.log('request account from vat-localchain');
@@ -109,7 +109,7 @@ test('delegate, undelegate', async t => {
     timer,
     vowTools,
     makeChainHub(bootstrap.agoricNames),
-    makeTimestampHelper(timer),
+    makeTimeHelper(timer),
   );
 
   t.log('request account from vat-localchain');
@@ -162,7 +162,7 @@ test('transfer', async t => {
     timer,
     vowTools,
     makeChainHub(bootstrap.agoricNames),
-    makeTimestampHelper(timer),
+    makeTimeHelper(timer),
   );
 
   t.log('request account from vat-localchain');
diff --git a/packages/orchestration/test/exos/time.test.ts b/packages/orchestration/test/exos/time-helper.test.ts
similarity index 77%
rename from packages/orchestration/test/exos/time.test.ts
rename to packages/orchestration/test/exos/time-helper.test.ts
index 768869e493f9..e761b5ce3edc 100644
--- a/packages/orchestration/test/exos/time.test.ts
+++ b/packages/orchestration/test/exos/time-helper.test.ts
@@ -4,26 +4,26 @@ import { V } from '@agoric/vow/vat.js';
 import { buildZoeManualTimer } from '@agoric/zoe/tools/manualTimer.js';
 import { TimeMath } from '@agoric/time';
 import {
-  makeTimestampHelper,
+  makeTimeHelper,
   NANOSECONDS_PER_SECOND,
   SECONDS_PER_MINUTE,
-} from '../../src/exos/time.js';
+} from '../../src/exos/time-helper.js';
 
-test('makeTimestampHelper - getCurrentTimestamp', async t => {
+test('makeTimeHelper - getCurrentTimestamp', async t => {
   const timer = buildZoeManualTimer(t.log);
   const timerBrand = timer.getTimerBrand();
   t.is(timer.getCurrentTimestamp().absValue, 0n, 'current time is 0n');
 
-  const timestampHelper = makeTimestampHelper(timer);
+  const timeHelper = makeTimeHelper(timer);
   t.is(
-    await V.when(timestampHelper.getTimeoutTimestampNS()),
+    await V.when(timeHelper.getTimeoutTimestampNS()),
     5n * SECONDS_PER_MINUTE * NANOSECONDS_PER_SECOND,
     'default timestamp is 5 minutes from current time, in nanoseconds',
   );
 
   t.is(
     await V.when(
-      timestampHelper.getTimeoutTimestampNS(
+      timeHelper.getTimeoutTimestampNS(
         TimeMath.coerceRelativeTimeRecord(1n, timerBrand),
       ),
     ),
@@ -35,7 +35,7 @@ test('makeTimestampHelper - getCurrentTimestamp', async t => {
   await timer.tickN(3);
   t.is(
     await V.when(
-      timestampHelper.getTimeoutTimestampNS(
+      timeHelper.getTimeoutTimestampNS(
         TimeMath.coerceRelativeTimeRecord(1n, timerBrand),
       ),
     ),