Mass

Calculate Transaction Mass

post

This function calculates and returns the mass of a transaction, which is essential for determining the minimum fee. The mass calculation takes into account the storage mass as defined in KIP-0009.

Note: Be aware that if the transaction has a very low output amount or a high number of outputs, the mass can become significantly large.

Body

versionintegerRequired

lockTimeintegerOptionalDefault: 0

subnetworkIdstringOptional

Responses

200

Successful Response

application/json

422

Validation Error

application/json

post

HTTPcURLJavaScriptPython

POST /transactions/mass HTTP/1.1
Host: kas.nownodes.io
Content-Type: application/json
Accept: */*
Content-Length: 250

{
  "version": 1,
  "inputs": [
    {
      "previousOutpoint": {
        "transactionId": "text",
        "index": 1
      },
      "signatureScript": "text",
      "sequence": 1,
      "sigOpCount": 1
    }
  ],
  "outputs": [
    {
      "amount": 1,
      "scriptPublicKey": {
        "version": 1,
        "scriptPublicKey": "text"
      }
    }
  ],
  "lockTime": 0,
  "subnetworkId": "text"
}

{
  "mass": 1,
  "storage_mass": 1,
  "compute_mass": 1
}