> For the complete documentation index, see [llms.txt](https://docs.squidrouter.exchange/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.squidrouter.exchange/api-and-sdk-integration/key-concepts/transaction-types.md).

# Transaction Types

When requesting a route, the API returns a `transactionType` field that determines how the transaction should be constructed and submitted on-chain. The type depends on the source chain and whether the route involves DEX swaps.

***

## `DEPOSIT_ADDRESS_CALLDATA`

* **Source chains:** All EVMs (except Hedera), XRPL, Solana
* **Conditions:** Direct route (no DEX swaps)
* **Example routes:** Ethereum:USDC → Base:ETH, Solana:SOL → Arbitrum:USDC, XRPL:RLUSD → XRPL:XRP

**Code examples:**

| Route         | API                                                                                           | SDK                                                                                           |
| ------------- | --------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------- |
| EVM → EVM     | [evmToEVMSwap](https://github.com/0xsquid/examples/tree/main/V2/api/evmToEVMSwap)             | [evmToEVMSwap](https://github.com/0xsquid/examples/tree/main/V2/sdk/evmToEVMSwap)             |
| Solana → EVM  | [solanaToEVM\_Swap](https://github.com/0xsquid/examples/tree/main/V2/api/solanaToEVM_Swap)    | —                                                                                             |
| XRPL → EVM    | [xrplToArbitrumSwap](https://github.com/0xsquid/examples/tree/main/V2/api/xrplToArbitrumSwap) | [xrplToArbitrumSwap](https://github.com/0xsquid/examples/tree/main/V2/sdk/xrplToArbitrumSwap) |
| EVM → XRPL    | [baseToXrplSwap](https://github.com/0xsquid/examples/tree/main/V2/api/baseToXrplSwap)         | [baseToXrplSwap](https://github.com/0xsquid/examples/tree/main/V2/sdk/baseToXrplSwap)         |
| Stellar → EVM | [stellarToEVMSwap](https://github.com/0xsquid/examples/tree/main/V2/api/stellarToEVMSwap)     | [stellarToEVMSwap](https://github.com/0xsquid/examples/tree/main/V2/sdk/stellarToEVMSwap)     |

***

## `DEPOSIT_ADDRESS_WITH_SIGNATURE`

* **Source chains:** Hedera
* **Conditions:** Direct route (no DEX swaps)
* **Example routes:** Hedera:HBAR → Arbitrum:USDC, Hedera:USDC → Arbitrum:USDC

This transaction type is unique to Hedera and requires an additional signing step. Instead of calling a contract directly, the user sends funds to a deposit address and provides a signed verification.

### How it works

1. **Request a route** — The route response includes a `transactionRequest` with a `depositAddress` and `signatureRequired.orderHash`.
2. **Sign the order hash** — Before sending funds, sign the `orderHash` using `signer.signMessage()`. This produces a `depositTxVerificationSignature` that proves the user authorized the deposit.
3. **Poll for token association (Hedera-specific)** — Before executing the transaction, poll using `estimateGas` to ensure the destination token is associated with the deposit address. Retry up to 15 times with 1-second delays.
4. **Send the transaction** — Transfer funds to the deposit address.
5. **Track status** — When polling status, include both `quoteId` **and** `depositTxVerificationSignature` as parameters.

```typescript
// Step 1: Sign the order hash
const orderHash = routeResponse.route.transactionRequest.signatureRequired.orderHash;
const depositTxVerificationSignature = await signer.signMessage(
  ethers.getBytes(orderHash)
);

// Step 2: Include signature in status calls
const status = await axios.get("https://v2.api.squidrouter.exchange/v2/status", {
  params: {
    transactionId,
    fromChainId,
    toChainId,
    quoteId,
    depositTxVerificationSignature, // Required for DEPOSIT_ADDRESS_WITH_SIGNATURE
  },
});
```

See the [Hedera Integration Guide](/api-and-sdk-integration/chain-integration-guides/hedera-integration.md) for complete working examples.

**Code examples:**

| Route        | API                                                                                               | SDK                                                                                               |
| ------------ | ------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------- |
| Hedera → EVM | [hederaToArbitrumSwap](https://github.com/0xsquid/examples/tree/main/V2/api/hederaToArbitrumSwap) | [hederaToArbitrumSwap](https://github.com/0xsquid/examples/tree/main/V2/sdk/hederaToArbitrumSwap) |

***

## `ON_CHAIN_EXECUTION_WITH_SIGNATURE`

* **Source chains:** Hedera
* **Conditions:** Pre-hook (DEX swap) + Squid Intents step
* **Example route:** Hedera:SAUCE → Arbitrum:USDC

**Code examples:**

| Route        | API                                                                                               | SDK                                                                                               |
| ------------ | ------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------- |
| Hedera → EVM | [hederaToArbitrumSwap](https://github.com/0xsquid/examples/tree/main/V2/api/hederaToArbitrumSwap) | [hederaToArbitrumSwap](https://github.com/0xsquid/examples/tree/main/V2/sdk/hederaToArbitrumSwap) |

***

## `ON_CHAIN_EXECUTION`

* **Source chains:** All EVMs (except Hedera), Cosmos
* **Conditions:** DEX swap as first action (Single-chain DEX swap, Pre-hook (DEX swap) + Squid Intents step, DEX swap + Axelar bridge step)
* **Example routes:** Arbitrum:USDC → Arbitrum:ETH, Arbitrum:USDT → Base:ETH, Osmosis:USDC → Base:USDC

**Code examples:**

| Route                    | API                                                                                             | SDK                                                                                     |
| ------------------------ | ----------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------- |
| EVM pre-hook → EVM       | [evmPrehooktoEVM](https://github.com/0xsquid/examples/tree/main/V2/api/evmPrehooktoEVM)         | [evmPrehooktoEVM](https://github.com/0xsquid/examples/tree/main/V2/sdk/evmPrehooktoEVM) |
| Cosmos → EVM             | [cosmostoEVMSwap](https://github.com/0xsquid/examples/tree/main/V2/api/cosmostoEVMSwap)         | —                                                                                       |
| Cosmos → EVM (post-hook) | [CosmostoEVMPostHook](https://github.com/0xsquid/examples/tree/main/V2/api/CosmostoEVMPostHook) | —                                                                                       |

***

## `CHAINFLIP_DEPOSIT_ADDRESS`

* **Source chains:** Solana, Bitcoin
* **Conditions:** Chainflip as first step
* **Example routes:** Bitcoin:BTC → Arbitrum:ETH, Solana:SOL → Arbitrum:ETH

**Code examples:**

| Route         | API                                                                                          | SDK |
| ------------- | -------------------------------------------------------------------------------------------- | --- |
| Bitcoin → EVM | [bitcoinToEVM\_Swap](https://github.com/0xsquid/examples/tree/main/V2/api/bitcoinToEVM_Swap) | —   |


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