---
title: "Get Signature"
method: GET
path: "/defi/v1/bridge/getsignature"
tags: ["bridge"]
---

# Get Signature

`GET /defi/v1/bridge/getsignature`

## Request

- Base URL: `https://svc.blockdaemon.com`
- URL: `https://svc.blockdaemon.com/defi/v1/bridge/getsignature`
- Auth: API key in header `X-API-Key`

Retrieves the signature and transaction metadata for a cross-chain swap identified by its transaction hash. The response includes chain IDs, locked token amounts, the recipient address, and a cryptographic signature, enabling dApps to validate or finalize the swap on the destination chain.

> 💡 
**Compute Unit Value:** `40` (Fixed)

## Query parameters

- `bridgeId` '300': The unique ID to specify the bridge protocol for routing cross-chain queries or transactions. Find more [here](https://docs.blockdaemon.com/docs/defi-api-supported-protocols#supported-bridges-protocols).
- `transactionHash` string, required: The unique identifier (hash) of the blockchain transaction.

## Response `200`

Successful response

- object
  - `status` integer
  - `msg` string
  - `data` object

---

[API](https://skmtc.dev/blockdaemon/apis/blockdaemon-defi-api.md) - [All operations](https://skmtc.dev/blockdaemon/apis/blockdaemon-defi-api/llms.txt) - [OpenAPI document](https://skmtc.dev/blockdaemon/apis/blockdaemon-defi-api/revisions/ec053b7c8041?raw)