diff --git a/package.json b/package.json
index dd83a5d6d2..13f84d5d09 100644
--- a/package.json
+++ b/package.json
@@ -12,13 +12,13 @@
     "packages/*"
   ],
   "resolutions": {
-    "@polkadot/api": "^4.17.2-12",
-    "@polkadot/api-contract": "^4.17.2-12",
+    "@polkadot/api": "^4.17.2-14",
+    "@polkadot/api-contract": "^4.17.2-14",
     "@polkadot/hw-ledger": "^6.11.2-10",
     "@polkadot/keyring": "^6.11.2-10",
     "@polkadot/networks": "^6.11.2-10",
     "@polkadot/phishing": "^0.6.220",
-    "@polkadot/types": "^4.17.2-12",
+    "@polkadot/types": "^4.17.2-14",
     "@polkadot/util": "^6.11.2-10",
     "@polkadot/util-crypto": "^6.11.2-10",
     "@polkadot/wasm-crypto": "^4.1.1",
@@ -74,7 +74,7 @@
     "@crustio/crust-pin": "^0.0.1",
     "@pinata/sdk": "^1.1.23",
     "@polkadot/dev": "^0.62.52",
-    "@polkadot/ts": "^0.4.3",
+    "@polkadot/ts": "^0.4.4",
     "@types/bn.js": "^4.11.6",
     "@types/chart.js": "^2.9.32",
     "@types/file-saver": "^2.0.2",
diff --git a/packages/page-contracts/package.json b/packages/page-contracts/package.json
index d6ff91f218..846e29b040 100644
--- a/packages/page-contracts/package.json
+++ b/packages/page-contracts/package.json
@@ -6,6 +6,6 @@
   "license": "Apache-2.0",
   "dependencies": {
     "@babel/runtime": "^7.14.6",
-    "@polkadot/api-contract": "^4.17.2-12"
+    "@polkadot/api-contract": "^4.17.2-14"
   }
 }
diff --git a/packages/page-parachains/src/Crowdloan/Fund.tsx b/packages/page-parachains/src/Crowdloan/Fund.tsx
index c4aabb10b2..7ea9a4568a 100644
--- a/packages/page-parachains/src/Crowdloan/Fund.tsx
+++ b/packages/page-parachains/src/Crowdloan/Fund.tsx
@@ -31,12 +31,12 @@ interface LastChange {
   prevLength: number;
 }
 
-function Fund ({ bestHash, bestNumber, className, isOdd, isOngoing, leasePeriod, value: { childKey, info: { cap, depositor, end, firstPeriod, lastPeriod, raised, verifier }, isCapped, isEnded, isWinner, paraId } }: Props): React.ReactElement<Props> {
+function Fund ({ bestHash, bestNumber, className, isOdd, isOngoing, leasePeriod, value: { info: { cap, depositor, end, firstPeriod, lastPeriod, raised, verifier }, isCapped, isEnded, isWinner, paraId } }: Props): React.ReactElement<Props> {
   const { t } = useTranslation();
   const { api } = useApi();
   const { isAccount } = useAccounts();
   const endpoints = useParaEndpoints(paraId);
-  const { blockHash: contribHash, contributorsHex, myAccounts, myAccountsHex, myContributions } = useContributions(paraId, childKey);
+  const { blockHash, contributorsHex, hasLoaded, myAccounts, myAccountsHex, myContributions } = useContributions(paraId);
   const [lastChange, setLastChange] = useState<LastChange>(() => ({ prevHash: '', prevLength: 0 }));
 
   const isDepositor = useMemo(
@@ -73,10 +73,10 @@ function Fund ({ bestHash, bestNumber, className, isOdd, isOngoing, leasePeriod,
       const prevLength = contributorsHex.length;
 
       return prev.prevLength !== prevLength
-        ? { prevHash: contribHash, prevLength }
+        ? { prevHash: blockHash, prevLength }
         : prev;
     });
-  }, [contributorsHex, contribHash]);
+  }, [contributorsHex, blockHash]);
 
   return (
     <tr className={`${className || ''} ${isOdd ? 'isOdd' : 'isEven'}`}>
@@ -132,7 +132,7 @@ function Fund ({ bestHash, bestNumber, className, isOdd, isOngoing, leasePeriod,
         )}
       </td>
       <td className='number together media--1100'>
-        {contribHash === '-'
+        {!hasLoaded
           ? <Spinner noLabel />
           : (
             <>
diff --git a/packages/page-parachains/src/Crowdloan/useContributions.ts b/packages/page-parachains/src/Crowdloan/useContributions.ts
index 101befd88a..1cd8a63619 100644
--- a/packages/page-parachains/src/Crowdloan/useContributions.ts
+++ b/packages/page-parachains/src/Crowdloan/useContributions.ts
@@ -1,195 +1,55 @@
 // Copyright 2017-2021 @polkadot/app-parachains authors & contributors
 // SPDX-License-Identifier: Apache-2.0
 
-import type { ApiPromise } from '@polkadot/api';
-import type { StorageKey } from '@polkadot/types';
-import type { Balance, EventRecord, ParaId } from '@polkadot/types/interfaces';
+import type { DeriveContributions, DeriveOwnContributions } from '@polkadot/api-derive/types';
+import type { Balance, ParaId } from '@polkadot/types/interfaces';
 
-import { useCallback, useEffect, useState } from 'react';
+import { useEffect, useState } from 'react';
 
-import { useAccounts, useApi, useEventTrigger, useIsMountedRef } from '@polkadot/react-hooks';
+import { useAccounts, useApi, useCall } from '@polkadot/react-hooks';
 import { encodeAddress } from '@polkadot/util-crypto';
 
-interface Contributions {
-  contributorsHex: string[];
-  contributorsMap: Record<string, boolean>;
-  hasKeys: boolean;
+interface Result extends DeriveContributions {
+  hasLoaded: boolean;
   myAccounts: string[];
   myAccountsHex: string[];
   myContributions: Record<string, Balance>;
 }
 
-interface Result extends Contributions {
-  blockHash: string;
-}
-
 const NO_CONTRIB: Result = {
   blockHash: '-',
   contributorsHex: [],
-  contributorsMap: {},
-  hasKeys: false,
+  hasLoaded: false,
   myAccounts: [],
   myAccountsHex: [],
   myContributions: {}
 };
 
-function extractContributors (keys: StorageKey[], { myContributions }: Contributions, allAccountsHex: string[], ss58Format?: number): Contributions {
-  const contributorsMap: Record<string, boolean> = {};
-
-  keys.forEach((k): void => {
-    contributorsMap[k.toHex()] = true;
-  });
-
-  const myAccountsHex = allAccountsHex.filter((h) => contributorsMap[h]);
-
-  return {
-    contributorsHex: Object.keys(contributorsMap),
-    contributorsMap,
-    hasKeys: true,
-    myAccounts: myAccountsHex.map((a) => encodeAddress(a, ss58Format)),
-    myAccountsHex,
-    myContributions
-  };
-}
-
-function extractDelta (api: ApiPromise, records: EventRecord[], { contributorsMap, hasKeys, myContributions }: Contributions, allAccountsHex: string[], ss58Format?: number): Contributions {
-  records.forEach((record): void => {
-    const hex = record.event.data[0].toHex();
-
-    if (api.events.crowdloan.Withdrew.is(record.event)) {
-      delete contributorsMap[hex];
-    } else {
-      contributorsMap[hex] = true;
-    }
-  });
-
-  const myAccountsHex = allAccountsHex.filter((h) => contributorsMap[h]);
-
-  return {
-    contributorsHex: Object.keys(contributorsMap),
-    contributorsMap,
-    hasKeys,
-    myAccounts: myAccountsHex.map((a) => encodeAddress(a, ss58Format)),
-    myAccountsHex,
-    myContributions
-  };
-}
-
-function useMyContributions (paraId: ParaId, childKey: string, keys: string[]): Record<string, Balance> {
+export default function useContributions (paraId: ParaId): Result {
   const { api } = useApi();
   const { allAccountsHex } = useAccounts();
-  const mountedRef = useIsMountedRef();
-  const [state, setState] = useState<Record<string, Balance>>({});
-
-  const trigger = useEventTrigger([
-    api.events.crowdloan.Contributed,
-    api.events.crowdloan.Withdrew
-  ], useCallback(
-    ({ event: { data: [accountId, eventParaId] } }: EventRecord) =>
-      eventParaId.eq(paraId) &&
-      allAccountsHex.some((a) => accountId.eq(a)),
-    [allAccountsHex, paraId]
-  ));
+  const [state, setState] = useState<Result>(() => NO_CONTRIB);
+  const derive = useCall<DeriveContributions>(api.derive.crowdloan.contributions, [paraId]);
+  const myContributions = useCall<DeriveOwnContributions>(api.derive.crowdloan.ownContributions, [paraId, state.myAccountsHex]);
 
   useEffect((): void => {
-    if (trigger && keys.length) {
-      Promise
-        .all(keys.map((k) => api.rpc.childstate.getStorage(childKey, k)))
-        .then((values) =>
-          mountedRef.current && setState(
-            values
-              .map((v) => api.createType('Option<StorageData>', v))
-              .map((o) =>
-                o.isSome
-                  ? api.createType('Balance', o.unwrap())
-                  : api.createType('Balance')
-              )
-              .reduce((all, b, index) => ({ ...all, [keys[index]]: b }), {})
-          )
-        )
-        .catch(console.error);
-    } else {
-      setState({});
-    }
-  }, [api, childKey, keys, mountedRef, trigger]);
+    derive && setState((prev): Result => {
+      let myAccountsHex = derive.contributorsHex.filter((h) => allAccountsHex.includes(h));
+      let myAccounts: string[];
 
-  return state;
-}
+      if (myAccountsHex.length === prev.myAccountsHex.length) {
+        myAccountsHex = prev.myAccountsHex;
+        myAccounts = prev.myAccounts;
+      } else {
+        myAccounts = myAccountsHex.map((a) => encodeAddress(a, api.registry.chainSS58));
+      }
 
-export default function useContributions (paraId: ParaId, childKey: string): Result {
-  const { api } = useApi();
-  const { allAccountsHex } = useAccounts();
-  const mountedRef = useIsMountedRef();
-  const [state, _setState] = useState<Result>(() => NO_CONTRIB);
-  const myContributions = useMyContributions(paraId, childKey, state.myAccountsHex);
+      return { ...prev, ...derive, hasLoaded: true, myAccounts, myAccountsHex };
+    });
+  }, [api, allAccountsHex, derive]);
 
-  // these trigger a full refresh of the keys [ParaId]
-  const triggerAll = useEventTrigger([
-    api.events.crowdloan.Dissolved,
-    api.events.crowdloan.AllRefunded,
-    api.events.crowdloan.PartiallyRefunded
-  ], useCallback(
-    ({ event: { data: [eventParaId] } }: EventRecord) =>
-      eventParaId.eq(paraId),
-    [paraId]
-  ));
-
-  // these trigger a delta adjustment [AccountId, ParaId, Balance]
-  const triggerDelta = useEventTrigger([
-    api.events.crowdloan.Contributed,
-    api.events.crowdloan.Withdrew
-  ], useCallback(
-    ({ event: { data: [, eventParaId] } }: EventRecord) =>
-      eventParaId.eq(paraId),
-    [paraId]
-  ));
-
-  const setState = useCallback(
-    (blockHash: string, fn: (prev: Contributions) => Contributions) =>
-      _setState((prev) => {
-        const { contributorsHex, contributorsMap, hasKeys, myAccounts, myAccountsHex } = fn(prev);
-
-        return hasKeys
-          ? {
-            ...prev,
-            blockHash,
-            contributorsHex,
-            contributorsMap,
-            hasKeys,
-            ...(prev.myAccounts.length === myAccounts.length
-              ? {}
-              : { myAccounts, myAccountsHex }
-            )
-          }
-          : prev;
-      }),
-    []
-  );
-
-  // first just adjust deltas
   useEffect((): void => {
-    mountedRef.current && triggerDelta && triggerDelta.events.length &&
-      setState(triggerDelta.blockHash, (prev) =>
-        extractDelta(api, triggerDelta.events, prev, allAccountsHex, api.registry.chainSS58)
-      );
-  }, [api, allAccountsHex, mountedRef, setState, triggerDelta]);
-
-  // refreshing the whole map, all keys
-  useEffect((): void => {
-    triggerAll &&
-      api.rpc.childstate
-        .getKeys(childKey, '0x')
-        .then((keys) =>
-          mountedRef.current && setState(triggerAll.blockHash, (prev) =>
-            extractContributors(keys, prev, allAccountsHex, api.registry.chainSS58)
-          )
-        )
-        .catch(console.error);
-  }, [allAccountsHex, api, childKey, mountedRef, setState, triggerAll]);
-
-  // update when the contribution amounts have changed
-  useEffect((): void => {
-    _setState((prev) => ({
+    myContributions && setState((prev) => ({
       ...prev,
       myContributions
     }));
diff --git a/packages/page-parachains/src/types.ts b/packages/page-parachains/src/types.ts
index d3d899a7f5..0430657782 100644
--- a/packages/page-parachains/src/types.ts
+++ b/packages/page-parachains/src/types.ts
@@ -49,7 +49,6 @@ export interface Campaigns {
 }
 
 export interface Campaign extends WinnerData {
-  childKey: string;
   info: FundInfo;
   isCapped?: boolean;
   isEnded?: boolean;
diff --git a/packages/page-parachains/src/useFunds.ts b/packages/page-parachains/src/useFunds.ts
index 3501008ab6..5f47e3e080 100644
--- a/packages/page-parachains/src/useFunds.ts
+++ b/packages/page-parachains/src/useFunds.ts
@@ -2,7 +2,7 @@
 // SPDX-License-Identifier: Apache-2.0
 
 import type { Option, StorageKey } from '@polkadot/types';
-import type { AccountId, BalanceOf, BlockNumber, FundInfo, ParaId, TrieIndex } from '@polkadot/types/interfaces';
+import type { AccountId, BalanceOf, BlockNumber, FundInfo, ParaId } from '@polkadot/types/interfaces';
 import type { ITuple } from '@polkadot/types/types';
 import type { Campaign, Campaigns } from './types';
 
@@ -10,8 +10,8 @@ import BN from 'bn.js';
 import { useEffect, useState } from 'react';
 
 import { useApi, useBestNumber, useCall, useEventTrigger, useIsMountedRef, useMapKeys } from '@polkadot/react-hooks';
-import { BN_ZERO, u8aConcat, u8aToHex } from '@polkadot/util';
-import { blake2AsU8a, encodeAddress } from '@polkadot/util-crypto';
+import { BN_ZERO, u8aConcat } from '@polkadot/util';
+import { encodeAddress } from '@polkadot/util-crypto';
 
 import { CROWD_PREFIX } from './constants';
 
@@ -37,17 +37,6 @@ function hasLease (paraId: ParaId, leased: ParaId[]): boolean {
   return leased.some((l) => l.eq(paraId));
 }
 
-function createChildKey (trieIndex: TrieIndex): string {
-  return u8aToHex(
-    u8aConcat(
-      ':child_storage:default:',
-      blake2AsU8a(
-        u8aConcat('crowdloan', trieIndex.toU8a())
-      )
-    )
-  );
-}
-
 // map into a campaign
 function updateFund (bestNumber: BN, minContribution: BN, data: Campaign, leased: ParaId[]): Campaign {
   data.isCapped = data.info.cap.sub(data.info.raised).lt(minContribution);
@@ -129,7 +118,6 @@ const optFundMulti = {
       .filter((v): v is [ParaId, FundInfo] => !!v[1])
       .map(([paraId, info]): Campaign => ({
         accountId: encodeAddress(createAddress(paraId)),
-        childKey: createChildKey(info.trieIndex),
         firstSlot: info.firstPeriod,
         info,
         isCrowdloan: true,
diff --git a/packages/react-api/package.json b/packages/react-api/package.json
index 0f8116b78d..8fd7bbfa92 100644
--- a/packages/react-api/package.json
+++ b/packages/react-api/package.json
@@ -6,7 +6,7 @@
   "license": "Apache-2.0",
   "dependencies": {
     "@babel/runtime": "^7.14.6",
-    "@polkadot/api": "^4.17.2-12",
+    "@polkadot/api": "^4.17.2-14",
     "@polkadot/extension-dapp": "^0.38.8",
     "@substrate/connect": "^0.3.10",
     "fflate": "^0.7.1",
diff --git a/yarn.lock b/yarn.lock
index 754e108e92..367245a93e 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2264,50 +2264,50 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@polkadot/api-contract@npm:^4.17.2-12":
-  version: 4.17.2-12
-  resolution: "@polkadot/api-contract@npm:4.17.2-12"
+"@polkadot/api-contract@npm:^4.17.2-14":
+  version: 4.17.2-14
+  resolution: "@polkadot/api-contract@npm:4.17.2-14"
   dependencies:
     "@babel/runtime": ^7.14.6
-    "@polkadot/api": 4.17.2-12
-    "@polkadot/types": 4.17.2-12
+    "@polkadot/api": 4.17.2-14
+    "@polkadot/types": 4.17.2-14
     "@polkadot/util": ^6.11.2-10
     rxjs: ^7.2.0
-  checksum: f068a3bb42be626df618964e00564744ac881c6299d60b0cff8885ec4cbaaeeb9e5dbbda1e7c13bdd2dafe81ca4715ac922a32ea0d0ff2441c432091fdced37f
+  checksum: 145c3c8b32acfb2f25d0936340ad3c77368ea66e0c7473679156bdaae2296a436068185dc321ae53741ac063c09e7c1035a9eb897ca4498e3e413d5e1b440159
   languageName: node
   linkType: hard
 
-"@polkadot/api-derive@npm:4.17.2-12":
-  version: 4.17.2-12
-  resolution: "@polkadot/api-derive@npm:4.17.2-12"
+"@polkadot/api-derive@npm:4.17.2-14":
+  version: 4.17.2-14
+  resolution: "@polkadot/api-derive@npm:4.17.2-14"
   dependencies:
     "@babel/runtime": ^7.14.6
-    "@polkadot/api": 4.17.2-12
-    "@polkadot/rpc-core": 4.17.2-12
-    "@polkadot/types": 4.17.2-12
+    "@polkadot/api": 4.17.2-14
+    "@polkadot/rpc-core": 4.17.2-14
+    "@polkadot/types": 4.17.2-14
     "@polkadot/util": ^6.11.2-10
     "@polkadot/util-crypto": ^6.11.2-10
     rxjs: ^7.2.0
-  checksum: c4c6251cc33f913cb21b0f24c7a4166b455e4e2b717cd8d905d2dfb79327aa059be733bb72f798227badd9efc5427a23a0b99ce1d3de5ca188ce5b6d3a49f8ee
+  checksum: 46b4eb46433ff627a392647a7d25788810c2f0572c1df9e5ab698cfd08c69d9fe89502d4266bb66d4ebcc05ba53356cc596912ce2692edafe7c3c722afe3ce3b
   languageName: node
   linkType: hard
 
-"@polkadot/api@npm:^4.17.2-12":
-  version: 4.17.2-12
-  resolution: "@polkadot/api@npm:4.17.2-12"
+"@polkadot/api@npm:^4.17.2-14":
+  version: 4.17.2-14
+  resolution: "@polkadot/api@npm:4.17.2-14"
   dependencies:
     "@babel/runtime": ^7.14.6
-    "@polkadot/api-derive": 4.17.2-12
+    "@polkadot/api-derive": 4.17.2-14
     "@polkadot/keyring": ^6.11.2-10
-    "@polkadot/rpc-core": 4.17.2-12
-    "@polkadot/rpc-provider": 4.17.2-12
-    "@polkadot/types": 4.17.2-12
-    "@polkadot/types-known": 4.17.2-12
+    "@polkadot/rpc-core": 4.17.2-14
+    "@polkadot/rpc-provider": 4.17.2-14
+    "@polkadot/types": 4.17.2-14
+    "@polkadot/types-known": 4.17.2-14
     "@polkadot/util": ^6.11.2-10
     "@polkadot/util-crypto": ^6.11.2-10
     eventemitter3: ^4.0.7
     rxjs: ^7.2.0
-  checksum: 3461a2fdce26635e2685c684f53afdfd57d3952b8e32900ea7a6a5419e5f0ff1f5f36359c4461f59b58ddc4fdc1c29180f5e5a2e84bf1f2a9728e49ff24a12c4
+  checksum: e79c899b37f8fafebd9f723489d721474de9c40e7e24e59b24870a1cb2fa051bc88fee6118f36fb2873b5833fcd62a96b7b9e1cf11fe48b08199599aecfcac5f
   languageName: node
   linkType: hard
 
@@ -2380,7 +2380,7 @@ __metadata:
   resolution: "@polkadot/app-contracts@workspace:packages/page-contracts"
   dependencies:
     "@babel/runtime": ^7.14.6
-    "@polkadot/api-contract": ^4.17.2-12
+    "@polkadot/api-contract": ^4.17.2-14
   languageName: unknown
   linkType: soft
 
@@ -2849,7 +2849,7 @@ __metadata:
   resolution: "@polkadot/react-api@workspace:packages/react-api"
   dependencies:
     "@babel/runtime": ^7.14.6
-    "@polkadot/api": ^4.17.2-12
+    "@polkadot/api": ^4.17.2-14
     "@polkadot/extension-dapp": ^0.38.8
     "@substrate/connect": ^0.3.10
     fflate: ^0.7.1
@@ -2981,32 +2981,32 @@ __metadata:
   languageName: unknown
   linkType: soft
 
-"@polkadot/rpc-core@npm:4.17.2-12":
-  version: 4.17.2-12
-  resolution: "@polkadot/rpc-core@npm:4.17.2-12"
+"@polkadot/rpc-core@npm:4.17.2-14":
+  version: 4.17.2-14
+  resolution: "@polkadot/rpc-core@npm:4.17.2-14"
   dependencies:
     "@babel/runtime": ^7.14.6
-    "@polkadot/rpc-provider": 4.17.2-12
-    "@polkadot/types": 4.17.2-12
+    "@polkadot/rpc-provider": 4.17.2-14
+    "@polkadot/types": 4.17.2-14
     "@polkadot/util": ^6.11.2-10
     rxjs: ^7.2.0
-  checksum: aa8996f45fa5011d5edbffd9e920d86e3e42f15e1230b6eaf86394095c0ccdb53fa617060fc24eab52b5614aa50d96c764d746e37021be25811b45ac6eee97c8
+  checksum: 8a4647b956db1b3a5b69e85f8abb4e6436461bffb623f250ef368e0112c14b661e510d209d2748fa842dbc0b6c4529b82c6298135b15bd5f01510a1d340bee9b
   languageName: node
   linkType: hard
 
-"@polkadot/rpc-provider@npm:4.17.2-12":
-  version: 4.17.2-12
-  resolution: "@polkadot/rpc-provider@npm:4.17.2-12"
+"@polkadot/rpc-provider@npm:4.17.2-14":
+  version: 4.17.2-14
+  resolution: "@polkadot/rpc-provider@npm:4.17.2-14"
   dependencies:
     "@babel/runtime": ^7.14.6
-    "@polkadot/types": 4.17.2-12
+    "@polkadot/types": 4.17.2-14
     "@polkadot/util": ^6.11.2-10
     "@polkadot/util-crypto": ^6.11.2-10
     "@polkadot/x-fetch": ^6.11.2-10
     "@polkadot/x-global": ^6.11.2-10
     "@polkadot/x-ws": ^6.11.2-10
     eventemitter3: ^4.0.7
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@@ -3037,36 +3037,36 @@ __metadata:
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-  resolution: "@polkadot/ts@npm:0.4.3"
+"@polkadot/ts@npm:^0.4.4":
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+  resolution: "@polkadot/ts@npm:0.4.4"
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-  version: 4.17.2-12
-  resolution: "@polkadot/types-known@npm:4.17.2-12"
+"@polkadot/types-known@npm:4.17.2-14":
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+  resolution: "@polkadot/types-known@npm:4.17.2-14"
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