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POST
/
api
/
v1
/
submit
/
approve
{
  "blobGasPrice": "<string>",
  "blobGasUsed": "<string>",
  "blockHash": "<string>",
  "blockNumber": 123,
  "contractAddress": "<string>",
  "effectiveGasPrice": "<string>",
  "from": "<string>",
  "gasUsed": "<string>",
  "to": "<string>",
  "transactionHash": "0x123...",
  "transactionIndex": 123
}

Authorizations

​
X-Pubkey, X-Timestamp, X-Signature, X-User-Stamp
string
header
required

Headers

​
X-Pubkey
string
required

Integrator's ECDSA public key (P-256 curve, compressed SEC1 format). Example: 0x038fedef7c12f93bbf342ad8943b7a825a3b41f61c9dc118b2c718efebabbf62fd

​
X-Timestamp
string
required

Unix timestamp in seconds (UTC). Must be within tolerance window (1 minute) to prevent replay attacks. Example: 1760375826

​
X-Signature
string
required

ECDSA signature (DER-encoded, hex with 0x prefix). Signs the message: {timestamp}{METHOD}{path_and_query}{json_body}. Example: 0x3045022100...

​
X-User-Stamp
string
required

WebAuthn User Stamp generated by the client. Example: 0x038fedef7c12f93bbf342ad8943b7a825a3b41f61c9dc118b2c718efebabbf62fd

Query Parameters

​
chain_id
integer
required

Chain ID (1 for Ethereum, 8453 for Base)

Required range: x >= 0

Body

application/json

Approve body signed by the user

​
organizationId
string
required
​
parameters
object
required
​
timestampMs
string
required
​
type
string
required

Response

Transaction executed successfully

Ethereum transaction receipt

​
blobGasPrice
string | null
​
blobGasUsed
string | null
​
blockHash
string | null
​
blockNumber
integer | null
​
contractAddress
string | null
​
effectiveGasPrice
string
​
from
string
​
gasUsed
string
​
to
string | null
​
transactionHash
string
Example:

"0x123..."

​
transactionIndex
integer | null
⌘I