Sign Blockchain Transactions | Identity

Sign transactions and messages according to the EIP-191 or EIP-712 standard.

Signing a blockchain message

You can sign arbitrary messages for Identity accounts according to the EIP-191 standard.


const response = await fetch(
  'https://api.utiliti.ai/wallets/' + wallet_address + '/signature',
  {
    method: 'POST',
    headers: {
      'Content-Type': 'application/json',
      'X-API-key': '<YOUR_API_KEY_HERE>',
    },
    body: JSON.stringify({
      message: 'Hello World',
    }),
  }
)



SDK coming soon...


CURL *hnd = curl_easy_init();

curl_easy_setopt(hnd, CURLOPT_CUSTOMREQUEST, "POST");
curl_easy_setopt(hnd, CURLOPT_URL, "https://api.utiliti.ai/wallets/wallet_address/signature");

struct curl_slist *headers = NULL;
headers = curl_slist_append(headers, "accept: application/json");
headers = curl_slist_append(headers, "content-type: application/json");
headers = curl_slist_append(headers, "X-API-key: <YOUR_API_KEY_HERE>");
curl_easy_setopt(hnd, CURLOPT_HTTPHEADER, headers);

curl_easy_setopt(hnd, CURLOPT_POSTFIELDS, "{\"message\":\"Hello World\"}");

CURLcode ret = curl_easy_perform(hnd);


curl --request POST \
     --url https://api.utiliti.ai/wallets/wallet_address/signature \
     --header 'X-API-key: <YOUR_API_KEY_HERE>' \
     --header 'accept: application/json' \
     --header 'content-type: application/json' \
     --data '
{
     "message": "Hello World"
}
'


$python -m pip install requests

---
import requests

url = "https://api.utiliti.ai/wallets/wallet_address/signature"

payload = {"message": "Hello World"}
headers = {
    "accept": "application/json",
    "content-type": "application/json",
    "X-API-key": "<YOUR_API_KEY_HERE>"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

You can also sign typed data according to the EIP-712 standard.


const response = await fetch(
  'https://api.utiliti.ai/wallets/' + wallet_address + '/signature',
  {
    method: 'POST',
    headers: {
      'Content-Type': 'application/json',
      'X-API-key': '<YOUR_API_KEY_HERE>',
    },
    body: JSON.stringify({
      data: {
        types: {
          EIP712Domain: [
            { name: 'name', type: 'string' },
            { name: 'version', type: 'string' },
            { name: 'chainId', type: 'uint256' },
            { name: 'verifyingContract', type: 'address' },
          ],
          Person: [
            { name: 'name', type: 'string' },
            { name: 'wallet', type: 'string' },
          ],
        },
        primaryType: 'Person',
        domain: {
          name: 'Person Signature Test',
          version: '1',
          chainId: 1,
          verifyingContract: '0xCcCCccccCCCCcCCCCCCcCcCccCcCCCcCcccccccC',
        },
        message: { name: 'User', wallet: 'User Wallet' },
      },
    }),
  }
)



SDK coming soon...


CURL *hnd = curl_easy_init();

curl_easy_setopt(hnd, CURLOPT_CUSTOMREQUEST, "POST");
curl_easy_setopt(hnd, CURLOPT_URL, "https://api.utiliti.ai/wallets/wallet_address/signature");

struct curl_slist *headers = NULL;
headers = curl_slist_append(headers, "accept: application/json");
headers = curl_slist_append(headers, "content-type: application/json");
headers = curl_slist_append(headers, "X-API-key: <YOUR_API_KEY_HERE>");
curl_easy_setopt(hnd, CURLOPT_HTTPHEADER, headers);

curl_easy_setopt(hnd, CURLOPT_POSTFIELDS, "{\"data\":\"data: {types: {EIP712Domain: [{ name: 'name', type: 'string' },{ name: 'version', type: 'string' },{ name: 'chainId', type: 'uint256' },{ name: 'verifyingContract', type: 'address' },],Person: [{ name: 'name', type: 'string' },{ name: 'wallet', type: 'string' },],},primaryType: 'Person',domain: {name: 'Person Signature Test',version: '1',chainId: 1,verifyingContract: '0xCcCCccccCCCCcCCCCCCcCcCccCcCCCcCcccccccC',},message: { name: 'User', wallet: 'User Wallet' },}\"}");

CURLcode ret = curl_easy_perform(hnd);


curl --request POST \
     --url https://api.utiliti.ai/wallets/wallet_address/signature \
     --header 'X-API-key: <YOUR_API_KEY_HERE>' \
     --header 'accept: application/json' \
     --header 'content-type: application/json' \
     --data @- <<EOF
{
     "data": "data: {types: {EIP712Domain: [{ name: 'name', type:'string' },{ name: 'version', type: 'string' },{ name: 'chainId', type: 'uint256' },{ name: 'verifyingContract', type: 'address' },],Person: [{ name: 'name', type: 'string' },{ name: 'wallet', type: 'string' },],},primaryType: 'Person',domain: {name: 'Person Signature Test',version: '1',chainId: 1,verifyingContract:'0xCcCCccccCCCCcCCCCCCcCcCccCcCCCcCcccccccC',},message: { name: 'User', wallet: 'User Wallet' },}"
}
EOF


$python -m pip install requests

---
import requests

url = "https://api.utiliti.ai/wallets/wallet_address/signature"

payload = {"data": "data: {types: {EIP712Domain: [{ name: 'name', type: 'string' },{ name: 'version', type: 'string' },{ name: 'chainId', type: 'uint256' },{ name: 'verifyingContract', type: 'address' },],Person: [{ name: 'name', type: 'string' },{ name: 'wallet', type: 'string' },],},primaryType: 'Person',domain: {name: 'Person Signature Test',version: '1',chainId: 1,verifyingContract: '0xCcCCccccCCCCcCCCCCCcCcCccCcCCCcCcccccccC',},message: { name: 'User', wallet: 'User Wallet' },}"}
headers = {
    "accept": "application/json",
    "content-type": "application/json",
    "X-API-key": "<YOUR_API_KEY_HERE>"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)