Updated on 2026-08-14

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

@@ -26,10 +26,11 @@ class UserTokensRepository(
     private val networkService: UserTokensNetworkService,
 ) {
     suspend fun getUserTokens(card: Card): List<Currency> {
-        if (DemoHelper.isDemoCardId(card.cardId)) {
-            return loadDemoCurrencies()
-        }
         val userId = card.getUserId()
+        if (DemoHelper.isDemoCardId(card.cardId)) {
+            return loadTokensOffline(card, userId).ifEmpty { loadDemoCurrencies() }
+        }
+
         if (!NetworkConnectivity.getInstance().isOnlineOrConnecting()) {
             return loadTokensOffline(card, userId)
         }
@@ -68,9 +69,15 @@ class UserTokensRepository(
     }
 
     suspend fun loadBlockchainsToDerive(card: Card): List<BlockchainNetwork> {
-        return storageService.getUserTokens(card.getUserId())?.toBlockchainNetworks() ?: storageService.getUserTokens(
-            card,
-        ).toBlockchainNetworks()
+        val userId = card.getUserId()
+        val blockchainNetworks = loadTokensOffline(card, userId).toBlockchainNetworks()
+
+        if (DemoHelper.isDemoCardId(card.cardId)) {
+            return blockchainNetworks
+                .ifEmpty { loadDemoCurrencies().toBlockchainNetworks() }
+        }
+
+        return blockchainNetworks
     }
 
     private fun loadDemoCurrencies(): List<Currency> {

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

@@ -137,4 +137,13 @@ fun Blockchain.toCoinId(): String {
         Blockchain.SaltPay, Blockchain.SaltPayTestnet -> "xdai"
         Blockchain.Unknown -> "unknown"
     }
-}
+}
+
+fun Blockchain.isSupportedInApp(): Boolean {
+    return !excludedBlockchains.contains(this)
+}
+
+private val excludedBlockchains = listOf(
+    Blockchain.Optimism, // TODO: remove when fee calculation is fixed
+    Blockchain.SaltPay,
+)

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

@@ -21,8 +21,9 @@ fun Card.supportedBlockchains(): List<Blockchain> {
             (Blockchain.fromCurve(EllipticCurve.Secp256k1) + Blockchain.fromCurve(EllipticCurve.Ed25519)).distinct()
         }
     }
-    val filtered = supportedBlockchains.filter { isTestCard == it.isTestnet() }
-    return filtered
+    return supportedBlockchains
+        .filter { isTestCard == it.isTestnet() }
+        .filter { it.isSupportedInApp() }
 }
 
 fun Card.supportedTokens(): List<Blockchain> {