---
title: "Retrieve the signing payload for external signing"
method: GET
path: "/transactions/{id}/signing_payload"
tags: ["transactions"]
---

# Retrieve the signing payload for external signing

`GET /transactions/{id}/signing_payload`

Returns the Keccak256 hash that must be signed with your post-quantum key.
Only available when the transaction is in PENDING_SIGNATURE state.

## Path parameters

- `id` string, uuid, required

## Response `200`

Signing payload

- SigningPayload
  - `transactionId` string, uuid, required
  - `signingHash` string, required — Hex-encoded 32-byte Keccak256 digest to sign with your post-quantum key
  - `status` string, required
  - `sourceAddress` string
  - `destinationAddress` string
  - `amount` string
  - `assetId` string, uuid

## Other responses

- `409` — Transaction not in signable state

---

[API](https://skmtc.net/quantum-chain-pte-ltd/apis/qustody-api.md) · [All operations](https://skmtc.net/quantum-chain-pte-ltd/apis/qustody-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/quantum-chain-pte-ltd/qustody-api/revisions/ecb2cea3c096/schema)