diff --git a/community_server/skeema/gradido_community/blockchain_types.sql b/community_server/skeema/gradido_community/blockchain_types.sql
new file mode 100644
index 000000000..bd6a12604
--- /dev/null
+++ b/community_server/skeema/gradido_community/blockchain_types.sql
@@ -0,0 +1,17 @@
+/* 
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+/**
+ * Author:  einhornimmond
+ * Created: 06.04.2021
+ */
+
+CREATE TABLE `blockchain_types` (
+  `id` int(10) unsigned NOT NULL AUTO_INCREMENT,
+  `name` varchar(45) NOT NULL,
+  `text` varchar(255) NULL,
+  `symbol` varchar(10) NULL,
+  PRIMARY KEY (`id`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
diff --git a/community_server/skeema/gradido_community/insert/insert_blockchain_types.sql b/community_server/skeema/gradido_community/insert/insert_blockchain_types.sql
new file mode 100644
index 000000000..0a58e4392
--- /dev/null
+++ b/community_server/skeema/gradido_community/insert/insert_blockchain_types.sql
@@ -0,0 +1,5 @@
+INSERT INTO `blockchain_types` (`id`, `name`, `text`, `symbol`) VALUES
+(1, 'mysql', 'use mysql db as blockchain, work only with single community-server', NULL),
+(2, 'hedera', 'use hedera for transactions', 'HBAR');
+
+
diff --git a/community_server/skeema/gradido_community/transactions.sql b/community_server/skeema/gradido_community/transactions.sql
index 566cfc048..8641f0057 100644
--- a/community_server/skeema/gradido_community/transactions.sql
+++ b/community_server/skeema/gradido_community/transactions.sql
@@ -5,5 +5,6 @@ CREATE TABLE `transactions` (
   `tx_hash` binary(48) DEFAULT NULL,
   `memo` varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL,
   `received` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+  `blockchain_type_id` bigint(20) unsigned NOT NULL DEFAULT 1,
   PRIMARY KEY (`id`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
diff --git a/community_server/src/Controller/BlockchainTypesController.php b/community_server/src/Controller/BlockchainTypesController.php
new file mode 100644
index 000000000..2a94037df
--- /dev/null
+++ b/community_server/src/Controller/BlockchainTypesController.php
@@ -0,0 +1,106 @@
+<?php
+namespace App\Controller;
+
+use App\Controller\AppController;
+
+/**
+ * BlockchainTypes Controller
+ *
+ * @property \App\Model\Table\BlockchainTypesTable $BlockchainTypes
+ *
+ * @method \App\Model\Entity\BlockchainType[]|\Cake\Datasource\ResultSetInterface paginate($object = null, array $settings = [])
+ */
+class BlockchainTypesController extends AppController
+{
+    /**
+     * Index method
+     *
+     * @return \Cake\Http\Response|null
+     */
+    public function index()
+    {
+        $blockchainTypes = $this->paginate($this->BlockchainTypes);
+
+        $this->set(compact('blockchainTypes'));
+    }
+
+    /**
+     * View method
+     *
+     * @param string|null $id Blockchain Type id.
+     * @return \Cake\Http\Response|null
+     * @throws \Cake\Datasource\Exception\RecordNotFoundException When record not found.
+     */
+    public function view($id = null)
+    {
+        $blockchainType = $this->BlockchainTypes->get($id, [
+            'contain' => [],
+        ]);
+
+        $this->set('blockchainType', $blockchainType);
+    }
+
+    /**
+     * Add method
+     *
+     * @return \Cake\Http\Response|null Redirects on successful add, renders view otherwise.
+     */
+    public function add()
+    {
+        $blockchainType = $this->BlockchainTypes->newEntity();
+        if ($this->request->is('post')) {
+            $blockchainType = $this->BlockchainTypes->patchEntity($blockchainType, $this->request->getData());
+            if ($this->BlockchainTypes->save($blockchainType)) {
+                $this->Flash->success(__('The blockchain type has been saved.'));
+
+                return $this->redirect(['action' => 'index']);
+            }
+            $this->Flash->error(__('The blockchain type could not be saved. Please, try again.'));
+        }
+        $this->set(compact('blockchainType'));
+    }
+
+    /**
+     * Edit method
+     *
+     * @param string|null $id Blockchain Type id.
+     * @return \Cake\Http\Response|null Redirects on successful edit, renders view otherwise.
+     * @throws \Cake\Datasource\Exception\RecordNotFoundException When record not found.
+     */
+    public function edit($id = null)
+    {
+        $blockchainType = $this->BlockchainTypes->get($id, [
+            'contain' => [],
+        ]);
+        if ($this->request->is(['patch', 'post', 'put'])) {
+            $blockchainType = $this->BlockchainTypes->patchEntity($blockchainType, $this->request->getData());
+            if ($this->BlockchainTypes->save($blockchainType)) {
+                $this->Flash->success(__('The blockchain type has been saved.'));
+
+                return $this->redirect(['action' => 'index']);
+            }
+            $this->Flash->error(__('The blockchain type could not be saved. Please, try again.'));
+        }
+        $this->set(compact('blockchainType'));
+    }
+
+    /**
+     * Delete method
+     *
+     * @param string|null $id Blockchain Type id.
+     * @return \Cake\Http\Response|null Redirects to index.
+     * @throws \Cake\Datasource\Exception\RecordNotFoundException When record not found.
+     */
+    public function delete($id = null)
+    {
+        $this->request->allowMethod(['post', 'delete']);
+        $blockchainType = $this->BlockchainTypes->get($id);
+        if ($this->BlockchainTypes->delete($blockchainType)) {
+            $this->Flash->success(__('The blockchain type has been deleted.'));
+        } else {
+            $this->Flash->error(__('The blockchain type could not be deleted. Please, try again.'));
+        }
+
+        return $this->redirect(['action' => 'index']);
+    }
+}
diff --git a/community_server/src/Model/Entity/BlockchainType.php b/community_server/src/Model/Entity/BlockchainType.php
new file mode 100644
index 000000000..c2e21402c
--- /dev/null
+++ b/community_server/src/Model/Entity/BlockchainType.php
@@ -0,0 +1,30 @@
+<?php
+namespace App\Model\Entity;
+
+use Cake\ORM\Entity;
+
+/**
+ * BlockchainType Entity
+ *
+ * @property int $id
+ * @property string $name
+ * @property string|null $text
+ * @property string|null $symbol
+ */
+class BlockchainType extends Entity
+{
+    /**
+     * Fields that can be mass assigned using newEntity() or patchEntity().
+     *
+     * Note that when '*' is set to true, this allows all unspecified fields to
+     * be mass assigned. For security purposes, it is advised to set '*' to false
+     * (or remove it), and explicitly make individual fields accessible as needed.
+     *
+     * @var array
+     */
+    protected $_accessible = [
+        'name' => true,
+        'text' => true,
+        'symbol' => true,
+    ];
+}
diff --git a/community_server/src/Model/Entity/Transaction.php b/community_server/src/Model/Entity/Transaction.php
index d4ebf68c4..209b8997e 100644
--- a/community_server/src/Model/Entity/Transaction.php
+++ b/community_server/src/Model/Entity/Transaction.php
@@ -39,6 +39,7 @@ class Transaction extends Entity
         'tx_hash' => true,
         'memo' => true,
         'received' => true,
+        'blockchain_type_id' => true,
         'state_group' => true,
         'transaction_type' => true,
         'state_created' => true,
diff --git a/community_server/src/Model/Table/BlockchainTypesTable.php b/community_server/src/Model/Table/BlockchainTypesTable.php
new file mode 100644
index 000000000..90213ac9f
--- /dev/null
+++ b/community_server/src/Model/Table/BlockchainTypesTable.php
@@ -0,0 +1,68 @@
+<?php
+namespace App\Model\Table;
+
+use Cake\ORM\Query;
+use Cake\ORM\RulesChecker;
+use Cake\ORM\Table;
+use Cake\Validation\Validator;
+
+/**
+ * BlockchainTypes Model
+ *
+ * @method \App\Model\Entity\BlockchainType get($primaryKey, $options = [])
+ * @method \App\Model\Entity\BlockchainType newEntity($data = null, array $options = [])
+ * @method \App\Model\Entity\BlockchainType[] newEntities(array $data, array $options = [])
+ * @method \App\Model\Entity\BlockchainType|false save(\Cake\Datasource\EntityInterface $entity, $options = [])
+ * @method \App\Model\Entity\BlockchainType saveOrFail(\Cake\Datasource\EntityInterface $entity, $options = [])
+ * @method \App\Model\Entity\BlockchainType patchEntity(\Cake\Datasource\EntityInterface $entity, array $data, array $options = [])
+ * @method \App\Model\Entity\BlockchainType[] patchEntities($entities, array $data, array $options = [])
+ * @method \App\Model\Entity\BlockchainType findOrCreate($search, callable $callback = null, $options = [])
+ */
+class BlockchainTypesTable extends Table
+{
+    /**
+     * Initialize method
+     *
+     * @param array $config The configuration for the Table.
+     * @return void
+     */
+    public function initialize(array $config)
+    {
+        parent::initialize($config);
+
+        $this->setTable('blockchain_types');
+        $this->setDisplayField('name');
+        $this->setPrimaryKey('id');
+    }
+
+    /**
+     * Default validation rules.
+     *
+     * @param \Cake\Validation\Validator $validator Validator instance.
+     * @return \Cake\Validation\Validator
+     */
+    public function validationDefault(Validator $validator)
+    {
+        $validator
+            ->nonNegativeInteger('id')
+            ->allowEmptyString('id', null, 'create');
+
+        $validator
+            ->scalar('name')
+            ->maxLength('name', 45)
+            ->requirePresence('name', 'create')
+            ->notEmptyString('name');
+
+        $validator
+            ->scalar('text')
+            ->maxLength('text', 255)
+            ->allowEmptyString('text');
+
+        $validator
+            ->scalar('symbol')
+            ->maxLength('symbol', 10)
+            ->allowEmptyString('symbol');
+
+        return $validator;
+    }
+}
diff --git a/community_server/src/Model/Table/TransactionsTable.php b/community_server/src/Model/Table/TransactionsTable.php
index 6777070fe..198feda73 100644
--- a/community_server/src/Model/Table/TransactionsTable.php
+++ b/community_server/src/Model/Table/TransactionsTable.php
@@ -52,6 +52,10 @@ class TransactionsTable extends Table
             'foreignKey' => 'transaction_type_id',
             'joinType' => 'INNER'
         ]);
+        $this->belongsTo('BlockchainTypes', [
+           'foreignKey' => 'blockchain_type_id',
+           'joinType' => 'INNER'
+        ]);
         $this->hasMany('StateCreated', [
             'foreignKey' => 'transaction_id'
         ]);
@@ -114,6 +118,7 @@ class TransactionsTable extends Table
     {
         $rules->add($rules->existsIn(['state_group_id'], 'StateGroups'));
         $rules->add($rules->existsIn(['transaction_type_id'], 'TransactionTypes'));
+        $rules->add($rules->existsIn(['blockchain_type_id'], 'BlockchainTypes'));
 
         return $rules;
     }
diff --git a/community_server/src/Template/BlockchainTypes/add.ctp b/community_server/src/Template/BlockchainTypes/add.ctp
new file mode 100644
index 000000000..bef6b70c5
--- /dev/null
+++ b/community_server/src/Template/BlockchainTypes/add.ctp
@@ -0,0 +1,25 @@
+<?php
+/**
+ * @var \App\View\AppView $this
+ * @var \App\Model\Entity\BlockchainType $blockchainType
+ */
+?>
+<nav class="large-3 medium-4 columns" id="actions-sidebar">
+    <ul class="side-nav">
+        <li class="heading"><?= __('Actions') ?></li>
+        <li><?= $this->Html->link(__('List Blockchain Types'), ['action' => 'index']) ?></li>
+    </ul>
+</nav>
+<div class="blockchainTypes form large-9 medium-8 columns content">
+    <?= $this->Form->create($blockchainType) ?>
+    <fieldset>
+        <legend><?= __('Add Blockchain Type') ?></legend>
+        <?php
+            echo $this->Form->control('name');
+            echo $this->Form->control('text');
+            echo $this->Form->control('symbol');
+        ?>
+    </fieldset>
+    <?= $this->Form->button(__('Submit')) ?>
+    <?= $this->Form->end() ?>
+</div>
diff --git a/community_server/src/Template/BlockchainTypes/edit.ctp b/community_server/src/Template/BlockchainTypes/edit.ctp
new file mode 100644
index 000000000..40cd7849b
--- /dev/null
+++ b/community_server/src/Template/BlockchainTypes/edit.ctp
@@ -0,0 +1,31 @@
+<?php
+/**
+ * @var \App\View\AppView $this
+ * @var \App\Model\Entity\BlockchainType $blockchainType
+ */
+?>
+<nav class="large-3 medium-4 columns" id="actions-sidebar">
+    <ul class="side-nav">
+        <li class="heading"><?= __('Actions') ?></li>
+        <li><?= $this->Form->postLink(
+                __('Delete'),
+                ['action' => 'delete', $blockchainType->id],
+                ['confirm' => __('Are you sure you want to delete # {0}?', $blockchainType->id)]
+            )
+        ?></li>
+        <li><?= $this->Html->link(__('List Blockchain Types'), ['action' => 'index']) ?></li>
+    </ul>
+</nav>
+<div class="blockchainTypes form large-9 medium-8 columns content">
+    <?= $this->Form->create($blockchainType) ?>
+    <fieldset>
+        <legend><?= __('Edit Blockchain Type') ?></legend>
+        <?php
+            echo $this->Form->control('name');
+            echo $this->Form->control('text');
+            echo $this->Form->control('symbol');
+        ?>
+    </fieldset>
+    <?= $this->Form->button(__('Submit')) ?>
+    <?= $this->Form->end() ?>
+</div>
diff --git a/community_server/src/Template/BlockchainTypes/index.ctp b/community_server/src/Template/BlockchainTypes/index.ctp
new file mode 100644
index 000000000..457782043
--- /dev/null
+++ b/community_server/src/Template/BlockchainTypes/index.ctp
@@ -0,0 +1,51 @@
+<?php
+/**
+ * @var \App\View\AppView $this
+ * @var \App\Model\Entity\BlockchainType[]|\Cake\Collection\CollectionInterface $blockchainTypes
+ */
+?>
+<nav class="large-3 medium-4 columns" id="actions-sidebar">
+    <ul class="side-nav">
+        <li class="heading"><?= __('Actions') ?></li>
+        <li><?= $this->Html->link(__('New Blockchain Type'), ['action' => 'add']) ?></li>
+    </ul>
+</nav>
+<div class="blockchainTypes index large-9 medium-8 columns content">
+    <h3><?= __('Blockchain Types') ?></h3>
+    <table cellpadding="0" cellspacing="0">
+        <thead>
+            <tr>
+                <th scope="col"><?= $this->Paginator->sort('id') ?></th>
+                <th scope="col"><?= $this->Paginator->sort('name') ?></th>
+                <th scope="col"><?= $this->Paginator->sort('text') ?></th>
+                <th scope="col"><?= $this->Paginator->sort('symbol') ?></th>
+                <th scope="col" class="actions"><?= __('Actions') ?></th>
+            </tr>
+        </thead>
+        <tbody>
+            <?php foreach ($blockchainTypes as $blockchainType): ?>
+            <tr>
+                <td><?= $this->Number->format($blockchainType->id) ?></td>
+                <td><?= h($blockchainType->name) ?></td>
+                <td><?= h($blockchainType->text) ?></td>
+                <td><?= h($blockchainType->symbol) ?></td>
+                <td class="actions">
+                    <?= $this->Html->link(__('View'), ['action' => 'view', $blockchainType->id]) ?>
+                    <?= $this->Html->link(__('Edit'), ['action' => 'edit', $blockchainType->id]) ?>
+                    <?= $this->Form->postLink(__('Delete'), ['action' => 'delete', $blockchainType->id], ['confirm' => __('Are you sure you want to delete # {0}?', $blockchainType->id)]) ?>
+                </td>
+            </tr>
+            <?php endforeach; ?>
+        </tbody>
+    </table>
+    <div class="paginator">
+        <ul class="pagination">
+            <?= $this->Paginator->first('<< ' . __('first')) ?>
+            <?= $this->Paginator->prev('< ' . __('previous')) ?>
+            <?= $this->Paginator->numbers() ?>
+            <?= $this->Paginator->next(__('next') . ' >') ?>
+            <?= $this->Paginator->last(__('last') . ' >>') ?>
+        </ul>
+        <p><?= $this->Paginator->counter(['format' => __('Page {{page}} of {{pages}}, showing {{current}} record(s) out of {{count}} total')]) ?></p>
+    </div>
+</div>
diff --git a/community_server/src/Template/BlockchainTypes/view.ctp b/community_server/src/Template/BlockchainTypes/view.ctp
new file mode 100644
index 000000000..481cc7b90
--- /dev/null
+++ b/community_server/src/Template/BlockchainTypes/view.ctp
@@ -0,0 +1,36 @@
+<?php
+/**
+ * @var \App\View\AppView $this
+ * @var \App\Model\Entity\BlockchainType $blockchainType
+ */
+?>
+<nav class="large-3 medium-4 columns" id="actions-sidebar">
+    <ul class="side-nav">
+        <li class="heading"><?= __('Actions') ?></li>
+        <li><?= $this->Html->link(__('Edit Blockchain Type'), ['action' => 'edit', $blockchainType->id]) ?> </li>
+        <li><?= $this->Form->postLink(__('Delete Blockchain Type'), ['action' => 'delete', $blockchainType->id], ['confirm' => __('Are you sure you want to delete # {0}?', $blockchainType->id)]) ?> </li>
+        <li><?= $this->Html->link(__('List Blockchain Types'), ['action' => 'index']) ?> </li>
+        <li><?= $this->Html->link(__('New Blockchain Type'), ['action' => 'add']) ?> </li>
+    </ul>
+</nav>
+<div class="blockchainTypes view large-9 medium-8 columns content">
+    <h3><?= h($blockchainType->name) ?></h3>
+    <table class="vertical-table">
+        <tr>
+            <th scope="row"><?= __('Name') ?></th>
+            <td><?= h($blockchainType->name) ?></td>
+        </tr>
+        <tr>
+            <th scope="row"><?= __('Text') ?></th>
+            <td><?= h($blockchainType->text) ?></td>
+        </tr>
+        <tr>
+            <th scope="row"><?= __('Symbol') ?></th>
+            <td><?= h($blockchainType->symbol) ?></td>
+        </tr>
+        <tr>
+            <th scope="row"><?= __('Id') ?></th>
+            <td><?= $this->Number->format($blockchainType->id) ?></td>
+        </tr>
+    </table>
+</div>