wip - add example of stx op to md file

docs/event-dispatcher.md

@@ -30,6 +30,12 @@ and any events emitted from Stacks transactions during the block.
 If the transaction originally comes from the parent microblock stream 
 preceding this block, the microblock related fields will be filled in.
 
+If the `raw_tx` field for a particular transaction is "0x00", that indicates
+that it is a burnchain operation. A burnchain operation is a transaction that 
+is executed on the Stacks network, but was sent through the Bitcoin network.
+The Stacks network supports a few specific burnchain operations. You can read 
+more about them [here](https://github.com/stacksgov/sips/blob/main/sips/sip-007/sip-007-stacking-consensus.md#stx-operations-on-bitcoin).
+
 Example:
 
 ```json
@@ -78,8 +84,46 @@ Example:
       "microblock_sequence": "3",
       "microblock_hash": "0x9304fcbcc6daf5ac3f264522e0df50eddb5be85df6ee8a9fc2384c54274daaac",
       "microblock_parent_hash": "0x4893ab44636023efa08374033428e44eca490582bd39a6e61f3b6cf749b474bd"
+    },
+    {
+      "burnchain_op": {
+        "TransferStx": {
+          "block_height": 208,
+          "burn_header_hash": [
+            55, 174,104,155,73,251,142,121,133,74,19,169,209,44,210,112,95,13,83,91,39,16,212,142,211,91,
+            234,92,56,7,85,250],
+          "memo": [],
+          "recipient": {
+            "bytes": "455e5d8c309ff012c55882cf7f50a4b542739b9c",
+            "version": 26
+          },
+          "sender": {
+            "bytes": "9ffdc100acf4d475b71a042b76fb4447966102ab",
+            "version": 26
+          },
+          "transfered_ustx": 100000,
+          "txid": "85aa2106186723f3c4f1d8bb58e3a02746ca9be1be9f4be0c6557079e1f660e6",
+          "vtxindex": 2
+        }
+      },
+      "contract_abi": null,
+      "execution_cost": {
+        "read_count": 0,
+        "read_length": 0,
+        "runtime": 0,
+        "write_count": 0,
+        "write_length": 0
+      },
+      "microblock_hash": null,
+      "microblock_parent_hash": null,
+      "microblock_sequence": null,
+      "raw_result": "0x0703",
+      "raw_tx": "0x00",
+      "status": "success",
+      "tx_index": 0,
+      "txid": "0x85aa2106186723f3c4f1d8bb58e3a02746ca9be1be9f4be0c6557079e1f660e6"
     }
-   ],
+  ],
    "matured_miner_rewards": [
     {
       "recipient": "ST31DA6FTSJX2WGTZ69SFY11BH51NZMB0ZZ239N96",

testnet/stacks-node/src/tests/neon_integrations.rs

@@ -1701,6 +1701,8 @@ fn stx_transfer_btc_integration_test() {
         for tx in transactions.iter() {
             let raw_tx = tx.get("raw_tx").unwrap().as_str().unwrap();
             if raw_tx == "0x00" {
+                let dbg = format!("{:#}", tx);
+                info!("TX-BTC {}",  dbg);
                 let burnchain_op = tx.get("burnchain_op").unwrap().as_object().unwrap();
                 if !burnchain_op.contains_key("TransferStx") {
                     panic!("unexpected btc transaction type");
@@ -1710,6 +1712,7 @@ fn stx_transfer_btc_integration_test() {
         }
     }
     assert!(found_btc_tx);
+    assert!(false);
 
     channel.stop_chains_coordinator();
 }