diff --git a/src/composables/ars/base.js b/src/composables/ars/base.js
new file mode 100644
index 00000000..26815eda
--- /dev/null
+++ b/src/composables/ars/base.js
@@ -0,0 +1,75 @@
+import { getCurrentInstance, watch } from "vue";
+
+export class BaseARS {
+
+  constructor () {
+    this._ars = {
+      oldEthersInstance: null,
+      events: {},
+      watchers: {},
+    }
+  }
+
+  _purgeARS () {
+    /*
+    ARS is ethersInstance targeted, it means that each time ethersInstance changes
+    the ARS is disabled for the old instance and enabled for the new one.
+    This _purgeARS() method is called at the top of _initARS() methods in order
+    to purge / disable the old ethersInstance ARS.
+    */
+
+    // Unwatch watchers
+    if (this._ars.unwatchers) {
+      for (const unwatch of this._ars.unwatchers) {
+        unwatch()
+      }
+    }
+    this._ars.unwatchers = [];
+
+    if (this._ars.oldEthersInstance) {
+
+      // Unlisten events
+      if (this._ars.events) {
+        for (const [eventName, listener] of Object.entries(this._ars.events)) {
+          this._ars.oldEthersInstance.off(eventName, listener)
+        }
+      }
+    }
+  }
+
+  _initEthersInstanceARS () {
+
+  }
+
+  _initPlaceholderInstanceARS () {
+
+  }
+
+  _initARS () {
+    // 1) Purge old ethersInstance ARS
+    this._purgeARS();
+
+    // 2) Init ethersInstance ARS, if there is an ethersInstance
+    if (this.proxy.ethersInstance) {
+      this._initEthersInstanceARS()
+    }
+
+    // 3) Init placeholderInstance ARS
+    this._initPlaceholderInstanceARS()
+  }
+
+  onSafe (func) {
+    const component = getCurrentInstance();
+    if (this.isSafe.value) {
+      func(component)
+    }
+    else {
+      const unwatch = watch(this.isSafe, () => {
+          if (this.isSafe.value) {
+              func(component)
+              unwatch()
+          }
+      })
+    }
+  }
+}
diff --git a/src/composables/ars/contract.js b/src/composables/ars/contract.js
index e3e91da2..69a1a4d0 100644
--- a/src/composables/ars/contract.js
+++ b/src/composables/ars/contract.js
@@ -1,9 +1,14 @@
 import { dapp, Status, OnContractReadSafe, OnContractWriteSafe } from "../../index.js";
 import { computed, watch, getCurrentInstance, createVNode } from "vue";
+import { BaseARS } from "./base.js";
 
-export class ContractARS {
+export class ContractARS extends BaseARS {
 
   constructor (name) {
+    super();
+
+    this.name = name;
+
     this.status = new Status(`contract:${name}`, [
       "NO_PROVIDER",     // Default status. If not changed it means that app don't have provider.
       "UNAVAILABLE",     // Set when contract is not available for the current network or not available at all.
@@ -52,7 +57,10 @@ export class ContractARS {
     }
   }
 
-  init() {
+  init () {
+    // Fill the oldEthersInstance instance used by ARS for purging
+    this._ars.oldEthersInstance = {...dapp.contracts[this.name].proxy.ethersInstance}
+
     watch(dapp.signer.isSafe, (newValue, oldValue) => {
       if (newValue !== oldValue) {
         // Here the contract is removed and then recreated in order to fully destroy the old signer and provider.
diff --git a/src/composables/ars/signer.js b/src/composables/ars/signer.js
index 55f174c7..3d41b8fc 100644
--- a/src/composables/ars/signer.js
+++ b/src/composables/ars/signer.js
@@ -1,9 +1,12 @@
 import { dapp, Status, OnSignerSafe } from "../../index.js";
 import { computed, watch, getCurrentInstance } from "vue";
+import { BaseARS } from "./base.js";
 
-export class SignerARS {
+export class SignerARS extends BaseARS {
 
   constructor () {
+    super();
+
     this.status = new Status("signer", [
       "NO_PROVIDER",          // Default, unchanged if dapp.provider is not safe.
       "DISCONNECTED",         // Default status. Not changed if the DApp is not connected to any wallet when loading.
@@ -22,6 +25,9 @@ export class SignerARS {
   }
 
   init() {
+    // Fill the oldEthersInstance instance used by ARS for purging
+    this._ars.oldEthersInstance = {...dapp.signer.proxy.ethersInstance}
+
     // 1) Auto-update status when provider status is WRONG, DISCONNECTED or in ERROR
     dapp.provider.status.watchAny((status) => {
       if (status === "WRONG_NETWORK") {
diff --git a/src/composables/config/wallets-config.js b/src/composables/config/wallets-config.js
index f8e76a9e..86801beb 100644
--- a/src/composables/config/wallets-config.js
+++ b/src/composables/config/wallets-config.js
@@ -35,8 +35,6 @@ export class WalletsConfig {
   }
 
   getCurrent () {
-    console.log("getCurrent")
-    console.log(dapp.signer.walletId)
     if (dapp.signer.proxy.ethersInstance) {
       return this.getById(dapp.signer.walletId)
     }
diff --git a/src/composables/proxies/proxy.js b/src/composables/proxies/proxy.js
index bb1e14a0..3e611c61 100644
--- a/src/composables/proxies/proxy.js
+++ b/src/composables/proxies/proxy.js
@@ -6,8 +6,6 @@ export class TulipeProxy {
 
   constructor (ethersInstance=null, extensionInstance=null) {
 
-    this._ars = {}
-
     const proxy = new Proxy(this, {
       get: function(target, prop, receiver) {
 
@@ -84,9 +82,7 @@ export class TulipeProxy {
         return this._ethersInstance;
       },
       set ethersInstance(instance) {
-        // Fill the oldEthersInstance instance used by ARS for purging
-        proxy._ars.oldEthersInstance = {...this._ethersInstance}
-
+      
         // Set the new ethersInstance
         this._ethersInstance = instance ? markRaw(instance) : instance;
 
@@ -101,67 +97,4 @@ export class TulipeProxy {
 
     return proxy;
   }
-
-  _purgeARS () {
-    /*
-    ARS is ethersInstance targeted, it means that each time ethersInstance changes
-    the ARS is disabled for the old instance and enabled for the new one.
-    This _purgeARS() method is called at the top of _initARS() methods in order
-    to purge / disable the old ethersInstance ARS.
-    */
-
-    // Unwatch watchers
-    if (this._ars.unwatchers) {
-      for (const unwatch of this._ars.unwatchers) {
-        unwatch()
-      }
-    }
-    this._ars.unwatchers = [];
-
-    if (this._ars.oldEthersInstance) {
-
-      // Unlisten events
-      if (this._ars.events) {
-        for (const [eventName, listener] of Object.entries(this._ars.events)) {
-          this._ars.oldEthersInstance.off(eventName, listener)
-        }
-      }
-    }
-  }
-
-  _initEthersInstanceARS () {
-
-  }
-
-  _initPlaceholderInstanceARS () {
-
-  }
-
-  _initARS () {
-    // 1) Purge old ethersInstance ARS
-    this._purgeARS();
-
-    // 2) Init ethersInstance ARS, if there is an ethersInstance
-    if (this.proxy.ethersInstance) {
-      this._initEthersInstanceARS()
-    }
-
-    // 3) Init placeholderInstance ARS
-    this._initPlaceholderInstanceARS()
-  }
-
-  onSafe (func) {
-    const component = getCurrentInstance();
-    if (this.isSafe.value) {
-      func(component)
-    }
-    else {
-      const unwatch = watch(this.isSafe, () => {
-          if (this.isSafe.value) {
-              func(component)
-              unwatch()
-          }
-      })
-    }
-  }
 }