Updated on 2026-08-14

app/src/main/java/com/tangem/data/Blockchain.java

@@ -32,7 +32,8 @@ public enum Blockchain {
     Eos("EOS", "EOS", 10000.0, R.drawable.tangem2, "EOS"),
     Ducatus("DUC", "DUC", 100000000.0, R.drawable.tangem2, "Ducatus"),
     Tezos("TEZOS", "XTZ", 10000000.0, R.drawable.ic_logo_tezos, "Tezos"),
-    FlowDemo("FLOW/demo", "", 1.0, R.drawable.tangem2, "Flow demo");
+    FlowDemo("FLOW/demo", "", 1.0, R.drawable.tangem2, "Flow demo"),
+    TokenEmv("TTW", "ETH", 1.0, R.drawable.ic_logo_ethereum, "Ethereum");
 
     Blockchain(String ID, String currency, double multiplier, int imageResource, String officialName) {
         mID = ID;

app/src/main/java/com/tangem/data/network/ServerApiTokenEmv.kt

@@ -0,0 +1,43 @@
+package com.tangem.data.network
+
+import com.jakewharton.retrofit2.adapter.rxjava2.RxJava2CallAdapterFactory
+import com.tangem.data.network.model.TezosAccountResponse
+import com.tangem.data.network.model.TokenEmvTransferBody
+import com.tangem.tangem_card.util.Log
+import io.reactivex.CompletableObserver
+import io.reactivex.Single
+import io.reactivex.SingleObserver
+import io.reactivex.android.schedulers.AndroidSchedulers
+import io.reactivex.functions.BiConsumer
+import io.reactivex.schedulers.Schedulers
+import okhttp3.OkHttpClient
+import okhttp3.logging.HttpLoggingInterceptor
+import retrofit2.Retrofit
+import retrofit2.converter.gson.GsonConverterFactory
+import retrofit2.converter.scalars.ScalarsConverterFactory
+
+class ServerApiTokenEmv {
+    private val TAG = ServerApiTokenEmv::class.java.simpleName
+
+    private val tangemServer = ""
+
+    private val tokenEmvApi = Retrofit.Builder()
+            .baseUrl(tangemServer)
+            .addConverterFactory(GsonConverterFactory.create())
+            .addConverterFactory(ScalarsConverterFactory.create())
+            .addCallAdapterFactory(RxJava2CallAdapterFactory.create()) //logging for testing
+            .client(OkHttpClient.Builder().addInterceptor(
+                    HttpLoggingInterceptor().setLevel(HttpLoggingInterceptor.Level.BODY)
+            ).build())
+            .build()
+            .create(TokenEmvApi::class.java)
+
+    fun transfer(tokenEmvTransferBody: TokenEmvTransferBody, transferObserver: CompletableObserver) {
+        Log.i(TAG, "new transfer request")
+
+        tokenEmvApi.transfer(tokenEmvTransferBody)
+                .subscribeOn(Schedulers.io())
+                .observeOn(AndroidSchedulers.mainThread())
+                .subscribe(transferObserver)
+    }
+}

app/src/main/java/com/tangem/data/network/TokenEmvApi.kt

@@ -0,0 +1,11 @@
+package com.tangem.data.network
+
+import com.tangem.data.network.model.TokenEmvTransferBody
+import io.reactivex.Completable
+import retrofit2.http.Body
+import retrofit2.http.POST
+
+interface TokenEmvApi {
+    @POST("./")
+    fun transfer(@Body tokenEmvTransferBody: TokenEmvTransferBody): Completable
+}

app/src/main/java/com/tangem/data/network/model/TokenEmvBody.kt

@@ -0,0 +1,15 @@
+package com.tangem.data.network.model
+
+import com.google.gson.annotations.SerializedName
+
+data class TokenEmvTransferBody(
+        val contract: String,
+        val amount: String,
+        val recipient: String,
+        @SerializedName("fee_limit")
+        val feeLimit: String,
+        val sequence: Int,
+        val r: String,
+        val s: String,
+        val v: Int
+)