cardano-rpc | Add UTxO RPC: submitTx method

cardano-rpc/proto/utxorpc/v1alpha/submit/submit.proto

@@ -0,0 +1,34 @@
+syntax = "proto3";
+
+package utxorpc.v1alpha.submit;
+
+// Represents a transaction from any supported blockchain.
+message AnyChainTx {
+  oneof type {
+    bytes raw = 1; // Raw transaction data.
+  }
+}
+
+// Request to submit transactions to the blockchain.
+message SubmitTxRequest {
+  repeated AnyChainTx tx = 1; // List of transactions to submit.
+}
+
+// TODO u5c: new type
+message TxSubmitResult {
+  oneof result {
+    bytes ref = 1; // Transaction references.
+    string error_message = 2; // The error message
+  }
+}
+
+// Response containing references to the submitted transactions.
+// TODO u5c: changed type
+message SubmitTxResponse {
+  repeated TxSubmitResult results = 1; // List of either transaction references or error messages.
+}
+
+// Service definition for submitting transactions and checking their status.
+service SubmitService {
+  rpc SubmitTx(SubmitTxRequest) returns (SubmitTxResponse); // Submit transactions to the blockchain.
+}