Added useFetchRedeemTx hook

The SDK currently doesn't set the redeem TX in all cases, so we
use this hook as a stop-gap until it does.

wormhole-connect/src/hooks/useFetchRedeemTx.ts

@@ -0,0 +1,67 @@
+import { useContext, useEffect } from 'react';
+import { useDispatch } from 'react-redux';
+import { setRedeemTx } from 'store/redeem';
+import { RouteContext } from 'contexts/RouteContext';
+import { sleep } from 'utils';
+import {
+  api,
+  toChain,
+  TransferState,
+  UniversalAddress,
+} from '@wormhole-foundation/sdk';
+import config from 'config';
+
+// TODO: this hook is a stop-gap until the SDK reliably
+// sets the redeem tx hash on the receipt
+const useFetchRedeemTx = () => {
+  const dispatch = useDispatch();
+  const { receipt } = useContext(RouteContext);
+
+  useEffect(() => {
+    if (
+      !receipt ||
+      receipt.state < TransferState.Attested ||
+      'originTxs' in receipt === false ||
+      receipt.originTxs.length === 0
+    ) {
+      return;
+    }
+
+    let isActive = true;
+
+    const fetchRedeemTx = async () => {
+      const wormholeApi = config.wormholeApi.replace(/\/$/, '');
+      const { txid } = receipt.originTxs[receipt.originTxs.length - 1];
+      while (isActive) {
+        try {
+          const vaa = await api.getVaaByTxHash(wormholeApi, txid);
+          if (vaa) {
+            const status = await api.getTransactionStatus(wormholeApi, {
+              chain: toChain(vaa.emitterChain),
+              emitter: new UniversalAddress(vaa.emitterAddr),
+              sequence: BigInt(vaa.sequence),
+            });
+            const redeemTx = status?.globalTx?.destinationTx?.txHash;
+            if (redeemTx) {
+              if (isActive) {
+                dispatch(setRedeemTx(redeemTx));
+              }
+              break;
+            }
+          }
+        } catch (e) {
+          console.warn(e);
+        }
+        await sleep(10_000);
+      }
+    };
+
+    fetchRedeemTx();
+
+    return () => {
+      isActive = false;
+    };
+  }, [receipt]);
+};
+
+export default useFetchRedeemTx;

wormhole-connect/src/views/Redeem/ExplorerLink.tsx

@@ -5,6 +5,7 @@ import { LINK } from 'utils/style';
 import config from 'config';
 import LaunchIcon from '@mui/icons-material/Launch';
 import { TransferSide } from 'config/types';
+import { isEvmChain } from 'utils/sdk';
 
 const useStyles = makeStyles()((theme) => ({
   link: {
@@ -45,7 +46,11 @@ function ExplorerLink(props: ExplorerLinkProps) {
           ? `${chainConfig.explorerUrl}txs/${props.txHash}`
           : `${chainConfig.explorerUrl}transactions/${props.txHash}`;
     } else {
-      explorerLink = `${chainConfig.explorerUrl}tx/${props.txHash}`;
+      let txHash = props.txHash;
+      if (isEvmChain(chainConfig.key)) {
+        txHash = txHash.startsWith('0x') ? txHash : '0x' + txHash;
+      }
+      explorerLink = `${chainConfig.explorerUrl}tx/${txHash}`;
     }
   } else if (props.type === 'address') {
     if (chainConfig.key === 'aptos') {

wormhole-connect/src/views/Redeem/Redeem.tsx

@@ -20,6 +20,7 @@ import config from 'config';
 import useConfirmBeforeLeaving from 'utils/confirmBeforeLeaving';
 
 import useTrackTransfer from 'hooks/useTrackTransfer';
+import useFetchRedeemTx from 'hooks/useFetchRedeemTx';
 
 function Redeem({
   txData,
@@ -149,6 +150,7 @@ function Redeem({
 
   // useDeliveryStatus();
   useTrackTransfer();
+  useFetchRedeemTx();
 
   return txData?.fromChain ? (
     <div