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POST
/
v1
/
transactions
/
construct-signed
Construct Signed Transaction
curl --request POST \
  --url https://api.example.com/v1/transactions/construct-signed \
  --header 'Content-Type: application/json' \
  --data '
{
  "txId": "<string>",
  "signature": "<string>"
}
'
{
  "txId": "<string>",
  "signedTxHex": "<string>"
}

​
Construct Signed Transaction

Combine an unsigned transaction with its signature to create a fully signed transaction ready for submission.

​
Request

​
txId
string
required
Transaction ID from build step
​
signature
string
required
Signature from signing step

​
Response

​
txId
string
Transaction identifier
​
signedTxHex
string
Fully signed transaction in hex format

​
Example

curl -X POST https://api.axonvault.io/v1/transactions/construct-signed \
  -H "X-Access-Key: ak_live_abc123" \
  -H "X-Signature: 5d41402abc4b2a76b9719d911017c592" \
  -H "X-Timestamp: 2024-01-15T10:30:00Z" \
  -H "Content-Type: application/json" \
  -d '{
    "txId": "tx_abc123",
    "signature": "0x1234567890abcdef..."
  }'

​
Response Example

{
  "txId": "tx_abc123",
  "signedTxHex": "0xf86c0a8502540be400825208941234567890123456789012345678901234567890880de0b6b3a7640000801ca0..."
}

​
Errors

Error TypeStatusDescription
invalid_request400Missing txId or signature
not_found404Transaction not found
invalid_signature400Signature doesn’t match transaction

​
Complete Flow