diff --git a/api/src/main/kotlin/icu/h2l/api/profile/HyperZoneCredential.kt b/api/src/main/kotlin/icu/h2l/api/profile/HyperZoneCredential.kt
index c2f74a98..51794665 100644
--- a/api/src/main/kotlin/icu/h2l/api/profile/HyperZoneCredential.kt
+++ b/api/src/main/kotlin/icu/h2l/api/profile/HyperZoneCredential.kt
@@ -21,6 +21,7 @@
 
 package icu.h2l.api.profile
 
+import icu.h2l.api.util.IPropertiesHolder
 import java.util.*
 
 /**
@@ -29,7 +30,7 @@ import java.util.*
  * 注意：凭证对象本身不直接携带 profileId 字段；
  * 是否已绑定、如何绑定到 Profile，都由各认证模块自己的实现负责。
  */
-interface HyperZoneCredential {
+interface HyperZoneCredential : IPropertiesHolder {
     /**
      * 认证渠道唯一标识，由子模块负责稳定定义。
      */
diff --git a/api/src/main/kotlin/icu/h2l/api/util/IPropertiesHolder.kt b/api/src/main/kotlin/icu/h2l/api/util/IPropertiesHolder.kt
new file mode 100644
index 00000000..b238810f
--- /dev/null
+++ b/api/src/main/kotlin/icu/h2l/api/util/IPropertiesHolder.kt
@@ -0,0 +1,43 @@
+/*
+ * This file is part of HyperZoneLogin, licensed under the GNU Affero General Public License v3.0 or later.
+ *
+ * Copyright (C) ksqeib (庆灵) <ksqeib@qq.com>
+ * Copyright (C) contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+package icu.h2l.api.util
+
+interface IPropertiesHolder {
+    val properties: HashMap<String, String>
+        get() = HashMap()
+
+    fun getProperty(key: String): String {
+        return properties[key] as String
+    }
+
+    fun setProperty(key: String, value: String) {
+        properties[key] = value
+    }
+
+    fun hasProperty(key: String): Boolean {
+        return properties.containsKey(key)
+    }
+
+    fun removeProperty(key: String) {
+        properties.remove(key)
+    }
+}
\ No newline at end of file
diff --git a/auth-yggd/src/main/kotlin/icu/h2l/login/auth/online/credential/YggdrasilHyperZoneCredential.kt b/auth-yggd/src/main/kotlin/icu/h2l/login/auth/online/credential/YggdrasilHyperZoneCredential.kt
index 9131e777..b7ab183a 100644
--- a/auth-yggd/src/main/kotlin/icu/h2l/login/auth/online/credential/YggdrasilHyperZoneCredential.kt
+++ b/auth-yggd/src/main/kotlin/icu/h2l/login/auth/online/credential/YggdrasilHyperZoneCredential.kt
@@ -36,6 +36,10 @@ class YggdrasilHyperZoneCredential(
     override val channelId: String = CHANNEL_ID
     override val credentialId: String = "$entryId:$authenticatedUUID"
 
+    init {
+        setProperty(YGGDRASIL_ENTRY_ID_PROPERTY, entryId.lowercase(Locale.getDefault()))
+    }
+
     override fun getRegistrationName(): String = authenticatedName
 
     override fun getBoundProfileId(): UUID? {
@@ -86,5 +90,7 @@ class YggdrasilHyperZoneCredential(
 
     companion object {
         private const val CHANNEL_ID = "yggdrasil"
+
+        public const val YGGDRASIL_ENTRY_ID_PROPERTY = "yggdrasil-entry-id"
     }
 }