Returns with the responses from CheckTx and DeliverTx.



Use only for testing and development. In production, use broadcast_tx_sync or broadcast_tx_async. You can subscribe for the transaction result using JSONRPC via a websocket. See

CONTRACT: only returns error if mempool.CheckTx() errs or if we timeout waiting for tx to commit.

If check_tx or deliver_tx fail, no error will be returned, but the returned result will contain a non-OK ABCI code.

Please refer to for formatting/encoding rules.


  • OBJECT - parameters
    • tx: STRING - base64 encoded transaction hash to retrieve



      To pass a transaction hash as a parameter in JSON RPC, you need to convert the transaction hash from hexadecimal format to base64 format. Since the transaction hash is already in hexadecimal format, you first need to decode it into bytes and then convert it to base64 format.

      You can easily convert hex to base64 at once here.

curl \
--header "Content-Type: application/json" \
--data '{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "broadcast_tx_commit",
  "params": {
    "tx": "b0XPyHNC8jIvYhQL6u2ZHav5HU6kDalNvYvd5yxJgok="


  • OBJECT - Transaction information
    "jsonrpc": "2.0",
    "id": 1,
    "result": {
        "check_tx": {
            "code": 2,
            "data": null,
            "log": "expected 2 wire type, got 7: tx parse error",
            "info": "",
            "gas_wanted": "0",
            "gas_used": "13350",
            "events": [],
            "codespace": "sdk",
            "sender": "",
            "priority": "0",
            "mempoolError": ""
        "deliver_tx": {
            "code": 0,
            "data": null,
            "log": "",
            "info": "",
            "gas_wanted": "0",
            "gas_used": "0",
            "events": [],
            "codespace": ""
        "hash": "667E3D959BE2F5E6A2A741DA09DC4833E417E2D516D250AEC33F3D9CEF35C0D1",
        "height": "0"

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