> ## Documentation Index
> Fetch the complete documentation index at: https://docs.getpara.com/llms.txt
> Use this file to discover all available pages before exploring further.

# IBC Cross-Chain Transfers

> Transfer tokens between Cosmos chains using Inter-Blockchain Communication

export const Card = ({imgUrl, title, description, href, horizontal = false, newTab = false}) => {
  const [isHovered, setIsHovered] = useState(false);
  const handleClick = e => {
    e.preventDefault();
    if (newTab) {
      window.open(href, '_blank', 'noopener,noreferrer');
    } else {
      window.location.href = href;
    }
  };
  return <div className={`not-prose relative my-2 p-[1px] rounded-xl transition-all duration-300 ${isHovered ? 'bg-gradient-to-r from-[#FF4E00] to-[#874AE3]' : 'bg-gray-200'}`} onMouseEnter={() => setIsHovered(true)} onMouseLeave={() => setIsHovered(false)}>
      <a href={href} onClick={handleClick} className={`not-prose flex ${horizontal ? 'flex-row' : 'flex-col'} font-normal h-full bg-white overflow-hidden w-full cursor-pointer rounded-[11px] no-underline`}>
        {imgUrl && <div className={`relative overflow-hidden flex-shrink-0 ${horizontal ? 'w-[30%] rounded-l-[11px]' : 'w-full'}`} onClick={e => e.stopPropagation()}>
            <img src={imgUrl} alt={title} className="w-full h-full object-cover pointer-events-none select-none" draggable="false" />
            <div className="absolute inset-0 pointer-events-none" />
          </div>}
        <div className={`flex-grow px-6 py-5 ${horizontal ? 'w-[70%]' : 'w-full'} flex flex-col ${horizontal && imgUrl ? 'justify-center' : 'justify-start'}`}>
          {title && <h2 className="font-semibold text-base text-gray-800 m-0">{title}</h2>}
          {description && <div className={`font-normal text-gray-500 re leading-6 ${horizontal || !imgUrl ? 'mt-0' : 'mt-1'}`}>
              <p className="m-0 text-xs">{description}</p>
            </div>}
        </div>
      </a>
    </div>;
};

Transfer tokens between different Cosmos chains using IBC (Inter-Blockchain Communication) with CosmJS.

## Prerequisites

<Card title="Setup CosmJS Libraries" description="Configure CosmJS with Para SDK first" href="/v2/react/guides/web3-operations/cosmos/setup-libraries" icon="gear" horizontal />

## IBC Transfer

```typescript theme={null}
import { useMemo } from "react";
import { useParaCosmjsProtoSigner, useParaCosmjsSignAndBroadcast } from "@getpara/react-sdk/cosmos";
import { SigningStargateClient, coins } from "@cosmjs/stargate";
import { MsgTransfer } from "cosmjs-types/ibc/applications/transfer/v1/tx";
import { Height } from "cosmjs-types/ibc/core/client/v1/client";

const RPC_URL = "https://rpc.cosmos.directory/cosmoshub";

function IBCTransfer() {
  const { protoSigner, isLoading } = useParaCosmjsProtoSigner();

  const address = protoSigner?.address;

  const client = useMemo(
    () => protoSigner ? SigningStargateClient.connectWithSigner(RPC_URL, protoSigner) : undefined,
    [protoSigner]
  );

  const { signAndBroadcastAsync, isPending } = useParaCosmjsSignAndBroadcast(protoSigner, client);

  const sendIBCTransfer = async () => {
    if (!protoSigner || !address || !client) return;

    const resolvedClient = await client;
    const currentHeight = await resolvedClient.getHeight();

    const timeoutHeight = Height.fromPartial({
      revisionNumber: 1n,
      revisionHeight: BigInt(currentHeight + 1000),
    });

    const msgTransfer = {
      typeUrl: "/ibc.applications.transfer.v1.MsgTransfer",
      value: MsgTransfer.fromPartial({
        sourcePort: "transfer",
        sourceChannel: "channel-141",
        token: {
          denom: "uatom",
          amount: "1000000",
        },
        sender: address,
        receiver: "osmo1...",
        timeoutHeight: timeoutHeight,
        timeoutTimestamp: 0n,
      }),
    };

    const fee = {
      amount: coins(5000, "uatom"),
      gas: "250000",
    };

    try {
      const result = await signAndBroadcastAsync({
        messages: [msgTransfer],
        fee,
        memo: "IBC transfer via Para",
      });

      console.log("IBC transfer initiated:", result.transactionHash);
    } catch (error) {
      console.error("IBC transfer failed:", error);
    }
  };

  if (isLoading) return <div>Loading...</div>;

  return (
    <div>
      <p>From: {address}</p>
      <button onClick={sendIBCTransfer} disabled={isPending}>
        {isPending ? "Transferring..." : "Send 1 ATOM to Osmosis"}
      </button>
    </div>
  );
}
```

## Next Steps

<CardGroup cols={3}>
  <Card title="Configure RPC" description="Connect to different chains for IBC" href="/v2/react/guides/web3-operations/cosmos/configure-rpc" icon="network-wired" />

  <Card title="Send Tokens" description="Send tokens within the same chain" href="/v2/react/guides/web3-operations/cosmos/send-tokens" icon="paper-plane" />

  <Card title="Query Balances" description="Check balances on different chains" href="/v2/react/guides/web3-operations/cosmos/query-balances" icon="wallet" />
</CardGroup>