Updated on 2026-08-14

app/src/main/java/com/tangem/tap/common/extensions/Blockchain.kt

@@ -36,6 +36,7 @@ fun Blockchain.getGreyedOutIconRes(): Int {
         Blockchain.Kusama -> R.drawable.ic_kusama_no_color
         Blockchain.Optimism, Blockchain.OptimismTestnet -> R.drawable.ic_optimism_no_color
         Blockchain.Dash -> R.drawable.ic_dash_no_color
+        Blockchain.Kaspa -> R.drawable.ic_kaspa_no_color
         else -> R.drawable.ic_tangem_logo
     }
 }

app/src/main/java/com/tangem/tap/domain/tokens/LoadAvailableCoinsService.kt

@@ -60,7 +60,7 @@ class LoadAvailableCoinsService(
         return withContext(dispatchers.io) {
             runCatching {
                 tangemTechApi.getCoins(
-                    networkIds = supportedBlockchains.toSet().map(Blockchain::toNetworkId).joinToString(","),
+                    networkIds = supportedBlockchains.toSet().joinToString(",", transform = Blockchain::toNetworkId),
                     active = true,
                     searchText = searchInput,
                     offset = offset,

app/src/main/java/com/tangem/tap/features/send/redux/SendScreenAction.kt

@@ -155,6 +155,12 @@ sealed class SendAction : SendScreenAction {
             val reduceAmount: BigDecimal,
         ) : Dialog()
 
+        data class KaspaWarningDialog(
+            val maxOutputs: Int,
+            val maxAmount: BigDecimal,
+            val onOk: () -> Unit,
+        ) : Dialog()
+
         sealed class SendTransactionFails : Dialog() {
             data class CardSdkError(val error: TangemSdkError) : Dialog()
             data class BlockchainSdkError(val error: com.tangem.blockchain.common.BlockchainSdkError) : Dialog()

app/src/main/java/com/tangem/tap/features/send/redux/middlewares/AddressPayIdMiddleware.kt

@@ -52,7 +52,7 @@ internal class AddressPayIdMiddleware {
     }
 
     private fun setAddressAndCheck(data: String, isUserInput: Boolean, dispatch: (Action) -> Unit) {
-        val potentialPayId = data.toLowerCase()
+        val potentialPayId = data.lowercase()
         if (isPayIdEnabled() && PayIdManager.isPayId(potentialPayId)) {
             dispatch(SetPayIdWalletAddress(potentialPayId, "", isUserInput))
         } else {
@@ -113,10 +113,11 @@ internal class AddressPayIdMiddleware {
     }
 
     private fun verifyAddress(address: String, wallet: Wallet, isUserInput: Boolean, dispatch: (Action) -> Unit) {
-        val addressSchemeSplit = if (wallet.blockchain == Blockchain.BitcoinCash) {
-            listOf(address)
-        } else {
-            address.split(":")
+        val addressSchemeSplit = when (wallet.blockchain) {
+            Blockchain.BitcoinCash,
+            Blockchain.Kaspa,
+            -> listOf(address)
+            else -> address.split(":")
         }
         val noSchemeAddress = when (addressSchemeSplit.size) {
             1 -> address // no scheme

app/src/main/java/com/tangem/tap/features/send/redux/middlewares/SendMiddleware.kt

@@ -269,6 +269,18 @@ private fun sendTransaction(
                             // from XLM, XRP, Polkadot
                             dispatch(SendAction.Dialog.SendTransactionFails.BlockchainSdkError(error))
                         }
+                        is BlockchainSdkError.Kaspa.UtxoAmountError -> {
+                            dispatch(
+                                SendAction.Dialog.KaspaWarningDialog(
+                                    maxOutputs = error.maxOutputs,
+                                    maxAmount = error.maxAmount,
+                                    onOk = {
+                                        dispatch(AmountAction.SetAmount(error.maxAmount, isUserInput = false))
+                                        dispatch(AmountActionUi.CheckAmountToSend)
+                                    },
+                                ),
+                            )
+                        }
                         else -> {
                             when {
                                 error.customMessage.contains(DemoTransactionSender.ID) -> {

app/src/main/java/com/tangem/tap/features/send/redux/reducers/SendScreenReducer.kt

@@ -55,6 +55,7 @@ private class SendReducer : SendInternalReducer {
                 sendState.copy(sendButtonState = IndeterminateProgressButton(action.state))
             }
             is SendAction.Dialog.TezosWarningDialog -> sendState.copy(dialog = action)
+            is SendAction.Dialog.KaspaWarningDialog -> sendState.copy(dialog = action)
             is SendAction.Dialog.SendTransactionFails.CardSdkError -> sendState.copy(dialog = action)
             is SendAction.Dialog.SendTransactionFails.BlockchainSdkError -> sendState.copy(dialog = action)
             is SendAction.Dialog.RequestFeeError -> sendState.copy(dialog = action)

app/src/main/java/com/tangem/tap/features/send/ui/dialogs/KaspaWarningDialog.kt

@@ -0,0 +1,27 @@
+package com.tangem.tap.features.send.ui.dialogs
+
+import android.content.Context
+import androidx.appcompat.app.AlertDialog
+import com.tangem.tap.features.send.redux.SendAction
+import com.tangem.tap.store
+import com.tangem.wallet.R
+
+object KaspaWarningDialog {
+    fun create(context: Context, dialog: SendAction.Dialog.KaspaWarningDialog): AlertDialog {
+        return AlertDialog.Builder(context).apply {
+            setTitle(R.string.common_warning)
+            setMessage(
+                context.getString(
+                    R.string.kaspa_withdrawal_message_warning,
+                    dialog.maxOutputs,
+                    dialog.maxAmount.toPlainString(),
+                ),
+            )
+            setPositiveButton(R.string.common_ok) { _, _ ->
+                store.dispatch(SendAction.Dialog.Hide)
+                dialog.onOk()
+            }
+        }
+            .create()
+    }
+}

app/src/main/java/com/tangem/tap/features/send/ui/stateSubscribers/SendStateSubscriber.kt

@@ -33,6 +33,7 @@ import com.tangem.tap.features.send.redux.states.TransactionExtraError
 import com.tangem.tap.features.send.redux.states.TransactionExtrasState
 import com.tangem.tap.features.send.ui.FeeUiHelper
 import com.tangem.tap.features.send.ui.SendFragment
+import com.tangem.tap.features.send.ui.dialogs.KaspaWarningDialog
 import com.tangem.tap.features.send.ui.dialogs.RequestFeeErrorDialog
 import com.tangem.tap.features.send.ui.dialogs.SendTransactionFailsDialog
 import com.tangem.tap.features.send.ui.dialogs.TezosWarningDialog
@@ -124,6 +125,12 @@ class SendStateSubscriber(fragment: BaseStoreFragment) :
                     dialog?.show()
                 }
             }
+            is SendAction.Dialog.KaspaWarningDialog -> {
+                if (dialog == null) {
+                    dialog = KaspaWarningDialog.create(fg.requireContext(), state.dialog)
+                    dialog?.show()
+                }
+            }
             is SendAction.Dialog.SendTransactionFails.CardSdkError -> {
                 if (dialog == null) {
                     dialog = SendTransactionFailsDialog.create(fg.requireContext(), state.dialog)

app/src/main/res/drawable/ic_kaspa_no_color.xml

@@ -0,0 +1,12 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="22dp"
+    android:height="22dp"
+    android:viewportWidth="22"
+    android:viewportHeight="22">
+    <path
+        android:fillColor="#EBEBEB"
+        android:pathData="M11,0L11,0A11,11 0,0 1,22 11L22,11A11,11 0,0 1,11 22L11,22A11,11 0,0 1,0 11L0,11A11,11 0,0 1,11 0z" />
+    <path
+        android:fillColor="#C9C9C9"
+        android:pathData="M13.659,5.35L11.564,5.663L12.174,9.721L7.787,6.34L6.5,8.022L10.343,10.975L6.5,13.944L7.787,15.626L12.174,12.245L11.564,16.303L13.659,16.616L14.5,10.975L13.659,5.35Z" />
+</vector>

core/datasource/src/main/java/com/tangem/datasource/config/ConfigManagerImpl.kt

@@ -102,6 +102,7 @@ internal class ConfigManagerImpl @Inject constructor() : ConfigManager {
                 saltPayAuthToken = configValues.saltPay.credentials.basicAuthToken,
                 nowNodeCredentials = NowNodeCredentials(configValues.nowNodesApiKey),
                 getBlockCredentials = GetBlockCredentials(configValues.getBlockApiKey),
+                kaspaSecondaryApiUrl = configValues.kaspaSecondaryApiUrl,
             ),
             appsFlyerDevKey = configValues.appsFlyer.appsFlyerDevKey,
             amplitudeApiKey = configValues.amplitudeApiKey,

core/datasource/src/main/java/com/tangem/datasource/config/models/JsonModels.kt

@@ -35,6 +35,7 @@ class ConfigValueModel(
     val tronGridApiKey: String,
     val amplitudeApiKey: String,
     val swapReferrerAccount: SwapReferrerAccount?,
+    val kaspaSecondaryApiUrl: String,
 )
 
 data class AppsFlyer(

core/res/src/main/res/values-de/strings-blockchain.xml

@@ -3,6 +3,8 @@
     <string name="address_type_default">Default</string>
     <string name="address_type_legacy">Legacy</string>
     <string name="common_fee_error">Erhalt der Gebühr fehlgeschlagen</string>
+    <string name="eth_gas_required_exceeds_allowance">Not enough funds for the transaction. Please top up your account.</string>
+    <string name="kaspa_withdrawal_message_warning">Due to Kaspa limitations only %1$d UTXOs can fit in a single transaction. This means you can only send %2$s or less. You need to reduce the amount.</string>
     <string name="no_account_generic">Laden Sie %1$s+ %2$s auf um ein Konto zu erstellen</string>
     <string name="no_account_polkadot">Destination account is not active. Send %s or more to activate the account.</string>
     <string name="send_error_blockchain_internal">Interner Fehler der Blockchain</string>

core/res/src/main/res/values-fr/strings-blockchain.xml

@@ -3,6 +3,8 @@
     <string name="address_type_default">Default</string>
     <string name="address_type_legacy">Legacy</string>
     <string name="common_fee_error">Échec de réception des commissions</string>
+    <string name="eth_gas_required_exceeds_allowance">Not enough funds for the transaction. Please top up your account.</string>
+    <string name="kaspa_withdrawal_message_warning">Due to Kaspa limitations only %1$d UTXOs can fit in a single transaction. This means you can only send %2$s or less. You need to reduce the amount.</string>
     <string name="no_account_generic">Pour créer un compte, téléchargez %1$s+ %2$s</string>
     <string name="no_account_polkadot">Destination account is not active. Send %s or more to activate the account.</string>
     <string name="send_error_blockchain_internal">Erreur interne de la blockchain</string>

core/res/src/main/res/values-it/strings-blockchain.xml

@@ -3,6 +3,8 @@
     <string name="address_type_default">Default</string>
     <string name="address_type_legacy">Legacy</string>
     <string name="common_fee_error">Impossibile ottenere la commissione</string>
+    <string name="eth_gas_required_exceeds_allowance">Not enough funds for the transaction. Please top up your account.</string>
+    <string name="kaspa_withdrawal_message_warning">Due to Kaspa limitations only %1$d UTXOs can fit in a single transaction. This means you can only send %2$s or less. You need to reduce the amount.</string>
     <string name="no_account_generic">Scarica %1$s+ %2$s per creare un account</string>
     <string name="no_account_polkadot">Destination account is not active. Send %s or more to activate the account.</string>
     <string name="send_error_blockchain_internal">Errore interno della blockchain</string>

core/res/src/main/res/values-ru/strings-blockchain.xml

@@ -3,6 +3,8 @@
     <string name="address_type_default">По умолчанию</string>
     <string name="address_type_legacy">Устаревший</string>
     <string name="common_fee_error">Не удалось получить комиссию</string>
+    <string name="eth_gas_required_exceeds_allowance">Недостаточно средств для совершения транзакции. Пожалуйста, пополните свой аккаунт.</string>
+    <string name="kaspa_withdrawal_message_warning">Из-за ограничений Kaspa в одну транзакцию может поместиться только %1$d UTXO. Это означает, что вы можете отправить только %2$s или меньше. Вам нужно уменьшить сумму.</string>
     <string name="no_account_generic">Пополните счет на %1$s+ %2$s, чтобы создать аккаунт</string>
     <string name="no_account_polkadot">Аккаунт получателя не активирован. Отправьте %s или более для активации аккаунта.</string>
     <string name="send_error_blockchain_internal">Внутренняя ошибка блокчейна</string>

core/res/src/main/res/values-zh-rTW/strings-blockchain.xml

@@ -3,8 +3,10 @@
     <string name="address_type_default">默認</string>
     <string name="address_type_legacy">遺留資產</string>
     <string name="common_fee_error">獲取費用失敗</string>
+    <string name="eth_gas_required_exceeds_allowance">沒有足夠的資金進行交易。請先入金</string>
+    <string name="kaspa_withdrawal_message_warning">Due to Kaspa limitations only %1$d UTXOs can fit in a single transaction. This means you can only send %2$s or less. You need to reduce the amount.</string>
     <string name="no_account_generic">加載 %1$s+ %2$s 以創建帳戶</string>
-    <string name="no_account_polkadot">目標帳戶未激活。發送 %s 或更多以激活帳戶。</string>
+    <string name="no_account_polkadot">目標帳戶未激活。發送 %s 或更多以激活帳戶</string>
     <string name="send_error_blockchain_internal">區塊鏈內部錯誤</string>
     <string name="send_error_dust_amount_format">最小數量是 %s</string>
     <string name="send_error_dust_change">更動太小</string>

core/res/src/main/res/values/strings-blockchain.xml

@@ -3,6 +3,8 @@
     <string name="address_type_default">Default</string>
     <string name="address_type_legacy">Legacy</string>
     <string name="common_fee_error">Failed to get fee</string>
+    <string name="eth_gas_required_exceeds_allowance">Not enough funds for the transaction. Please top up your account.</string>
+    <string name="kaspa_withdrawal_message_warning">Due to Kaspa limitations only %1$d UTXOs can fit in a single transaction. This means you can only send %2$s or less. You need to reduce the amount.</string>
     <string name="no_account_generic">Load %1$s+ %2$s to create account</string>
     <string name="no_account_polkadot">Destination account is not active. Send %s or more to activate the account.</string>
     <string name="send_error_blockchain_internal">Blockchain internal error</string>

core/ui/src/main/java/com/tangem/core/ui/extensions/BlockchainIcons.kt

@@ -32,6 +32,7 @@ fun getActiveIconRes(blockchainId: String): Int {
         "Kusama" -> R.drawable.img_kusama_22
         "OPTIMISM", "OPTIMISM/test" -> R.drawable.img_optimism_22
         "DASH" -> R.drawable.img_dash_22
+        "KAS" -> R.drawable.img_kaspa_22
         else -> R.drawable.ic_alert_24
     }
 }
@@ -70,6 +71,7 @@ fun getActiveIconResByCoinId(coinId: String, networkId: String): Int {
         "ethereumfair" -> R.drawable.img_eth_fair_22
         "kusama" -> R.drawable.img_kusama_22
         "dash" -> R.drawable.img_dash_22
+        "kaspa" -> R.drawable.img_kaspa_22
         else -> R.drawable.ic_alert_24
     }
 }

core/ui/src/main/res/drawable/img_kaspa_22.xml

@@ -0,0 +1,12 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="22dp"
+    android:height="22dp"
+    android:viewportWidth="22"
+    android:viewportHeight="22">
+    <path
+        android:fillColor="#71C9BB"
+        android:pathData="M11,0L11,0A11,11 0,0 1,22 11L22,11A11,11 0,0 1,11 22L11,22A11,11 0,0 1,0 11L0,11A11,11 0,0 1,11 0z" />
+    <path
+        android:fillColor="#ffffff"
+        android:pathData="M13.659,5.35L11.564,5.663L12.174,9.721L7.787,6.34L6.5,8.022L10.343,10.975L6.5,13.944L7.787,15.626L12.174,12.245L11.564,16.303L13.659,16.616L14.5,10.975L13.659,5.35Z" />
+</vector>

domain/src/main/java/com/tangem/domain/common/extensions/Blockchain.kt

@@ -49,6 +49,7 @@ fun Blockchain.Companion.fromNetworkId(networkId: String): Blockchain? {
         "optimistic-ethereum/test" -> Blockchain.OptimismTestnet
         "dash" -> Blockchain.Dash
         "sxdai" -> Blockchain.SaltPay
+        "kaspa" -> Blockchain.Kaspa
         else -> null
     }
 }
@@ -102,6 +103,7 @@ fun Blockchain.toNetworkId(): String {
         Blockchain.OptimismTestnet -> "optimistic-ethereum/test"
         Blockchain.Dash -> "dash"
         Blockchain.SaltPay -> "sxdai"
+        Blockchain.Kaspa -> "kaspa"
     }
 }
 
@@ -135,6 +137,7 @@ fun Blockchain.toCoinId(): String {
         Blockchain.Optimism, Blockchain.OptimismTestnet -> "ethereum"
         Blockchain.Dash -> "dash"
         Blockchain.SaltPay -> "xdai"
+        Blockchain.Kaspa -> "kaspa"
         Blockchain.Unknown -> "unknown"
     }
 }

gradle/dependencies.toml

@@ -68,8 +68,8 @@ kotlinSerialization = "1.4.1"
 # endregion Other libraries
 
 # region Tangem
-tangemBlockchainSdk = "develop-177"
-# tangemBlockchainSdk = "0.0.1" # Keep it! - used for local builds
+tangemBlockchainSdk = "develop-179"
+#tangemBlockchainSdk = "0.0.1" # Keep it! - used for local builds
 tangemCardSdk = "develop-204"
 # tangemCardSdk = "0.0.1" # Keep it! - used for local builds
 # endregion Tangem