Updated on 2026-08-14

app/src/main/java/com/tangem/tap/domain/walletconnect2/data/WalletConnectRepositoryImpl.kt

@@ -1,6 +1,7 @@
 package com.tangem.tap.domain.walletconnect2.data
 
 import android.app.Application
+import arrow.core.flatten
 import com.tangem.tap.domain.walletconnect2.domain.WalletConnectRepository
 import com.tangem.tap.domain.walletconnect2.domain.WcJrpcRequestsDeserializer
 import com.tangem.tap.domain.walletconnect2.domain.models.*
@@ -97,6 +98,7 @@ class WalletConnectRepositoryImpl @Inject constructor(
                             sessionProposal.url,
                             sessionProposal.icons,
                             sessionProposal.requiredNamespaces.values.flatMap { it.chains ?: emptyList() },
+                            sessionProposal.optionalNamespaces.values.flatMap { it.chains ?: emptyList() },
                         ),
                     )
                 }
@@ -187,6 +189,7 @@ class WalletConnectRepositoryImpl @Inject constructor(
             namespaces = sessionProposal.requiredNamespaces,
             userNamespaces = userNamespaces,
         )
+
         if (missingNetworks.isNotEmpty()) {
             Timber.e("Not added blockchains: $missingNetworks")
             scope.launch {
@@ -204,17 +207,26 @@ class WalletConnectRepositoryImpl @Inject constructor(
         }.groupBy { pair -> pair.first }
             .mapValues { entry -> entry.value.map { pair -> pair.second }.toSet() }
 
-        val preparedNamespaces = sessionProposal.requiredNamespaces.map { requiredNamespace ->
-            val accounts = requiredNamespace.value.chains?.mapNotNull { userChains[it] }?.flatten() ?: emptyList()
+        val preparedNamespaces = sessionProposal.requiredNamespaces
+            .map { requiredNamespace ->
+                val accountsRequired = requiredNamespace.value.chains
+                    ?.mapNotNull { chain -> userChains[chain] }
+                    ?.flatten() ?: emptyList()
+                val accountsOptional = sessionProposal.optionalNamespaces[requiredNamespace.key]?.chains
+                    ?.mapNotNull { chain -> userChains[chain] }
+                    ?.flatten() ?: emptyList()
 
-            requiredNamespace.key to Wallet.Model.Namespace.Session(
-                accounts = accounts,
-                methods = requiredNamespace.value.methods,
-                events = requiredNamespace.value.events,
-            )
-        }.toMap()
+                requiredNamespace.key to Wallet.Model.Namespace.Session(
+                    accounts = accountsRequired + accountsOptional,
+                    methods = requiredNamespace.value.methods,
+                    events = requiredNamespace.value.events,
+                )
+            }.toMap()
 
-        val sessionApproval = Wallet.Params.SessionApprove(sessionProposal.proposerPublicKey, preparedNamespaces)
+        val sessionApproval = Wallet.Params.SessionApprove(
+            proposerPublicKey = sessionProposal.proposerPublicKey,
+            namespaces = preparedNamespaces,
+        )
 
         Timber.d("Session approval is prepared for sending: $sessionApproval")
 

app/src/main/java/com/tangem/tap/domain/walletconnect2/domain/WalletConnectInteractor.kt

@@ -50,15 +50,15 @@ class WalletConnectInteractor(
                 when (wcEvent) {
                     is WalletConnectEvents.SessionProposal -> {
                         Timber.d("WC session proposal event received")
-                        val unsupportedNetworks = wcEvent.chainIds
+                        val unsupportedNetworks = wcEvent.requiredChainIds
                             .filter { blockchainHelper.chainIdToNetworkIdOrNull(it) == null }
                         if (unsupportedNetworks.isNotEmpty()) {
                             val error = WalletConnectError.ApprovalErrorUnsupportedNetwork(unsupportedNetworks)
                             handler.onSessionRejected(error)
                             return@onEach
                         }
-
-                        val networksFormatted = wcEvent.chainIds
+                        val networksFormatted = (wcEvent.requiredChainIds + wcEvent.optionalChainIds)
+                            .distinct()
                             .mapNotNull { blockchainHelper.chainIdToFullNameOrNull(it) }
                             .toString()
                         handler.onProposalReceived(proposal = wcEvent, networksFormatted = networksFormatted)

app/src/main/java/com/tangem/tap/domain/walletconnect2/domain/models/WalletConnectEvents.kt

@@ -9,7 +9,8 @@ sealed interface WalletConnectEvents {
         val description: String,
         val url: String,
         val icons: List<URI>,
-        val chainIds: List<String>,
+        val requiredChainIds: List<String>,
+        val optionalChainIds: List<String>,
     ) : WalletConnectEvents
 
     data class SessionApprovalError(val error: WalletConnectError) : WalletConnectEvents

gradle/dependencies.toml

@@ -72,8 +72,8 @@ mviCore = "1.3.1"
 kotlinSerialization = "1.4.1"
 arrow = "1.2.0-RC"
 reactiveNetwork = "3.0.8"
-walletConnectCore = "1.15.0"
-walletConnectWeb3 = "1.8.0"
+walletConnectCore = "1.17.0"
+walletConnectWeb3 = "1.10.0"
 # endregion Other libraries
 
 # region Tangem