database_api.get_required_signatures

Purpose

This API will take a partially signed transaction and a set of public keys that the owner has the ability to sign for and return the minimal subset of public keys that should add signatures to the transaction.

Parameters

PARAMETERS

{
  "trx": {
    "ref_block_num": 0,
    "ref_block_prefix": 0,
    "expiration": "1970-01-01T00:00:00",
    "operations": [],
    "extensions": [],
    "signatures": []
  },
  "available_keys": []
}

Example

BASH

curl -s https://api.steemit.com \
  -H 'Content-Type: application/json' \
  --data-binary '{
    "jsonrpc": "2.0",
    "method": "database_api.get_required_signatures",
    "params": {
      "trx": {
        "ref_block_num": 1097,
        "ref_block_prefix": 2181793527,
        "expiration": "2016-03-24T18:00:21",
        "operations": [
          {
            "type": "pow_operation",
            "value": {
              "worker_account": "cloop3",
              "block_id": "00000449f7860b82b4fbe2f317c670e9f01d6d9a",
              "nonce": 3899,
              "work": {
                "worker": "STM7P5TDnA87Pj9T4mf6YHrhzjC1KbPZpNxLWCcVcHxNYXakpoT4F",
                "input": "ae8e7c677119d22385f8c48026fee7aad7bba693bf788d7f27047f40b47738c0",
                "signature": "1f38fe9a3f9989f84bd94aa5bbc88beaf09b67f825aa4450cf5105d111149ba6db560b582c7dbb026c7fc9c2eb5051815a72b17f6896ed59d3851d9a0f9883ca7a",
                "work": "000e7b209d58f2e64b36e9bf12b999c6c7af168cc3fc41eb7f8a4bf796c174c3"
              },
              "props": {
                "account_creation_fee": {
                  "amount": "100000",
                  "precision": 3,
                  "nai": "@@000000021"
                },
                "maximum_block_size": 131072,
                "sbd_interest_rate": 1000
              }
            }
          }
        ],
        "extensions": [],
        "signatures": []
      },
      "available_keys": []
    },
    "id": 1
  }'

Response

RESPONSE

{
  "keys": []
}