ckb_sdk_dart 0.26.2

A Dart SDK for Nervos CKB which is a public/permissionless blockchain, the layer 1 of Nervos network.

CKB SDK Dart

Dart SDK for Nervos CKB

Prerequisites

• Dart 2.5 or later

Installation

You should install dart firstly through Dart.

Usage

JSONRPC

A simple usage example of jsonrpc request which in example/rpc.dart:

main() async {
  Api api = Api('http://localhost:8114', hasLogger: false);
  String blockHash = await api.getBlockHash('0x2');
  Block block = await api.getBlock(blockHash);
  print(block.transactions[0].outputs[0].lock.toJson());
}

Simple Wallet example

A simple usage example of sendTransaction which is in example/wallet.dart:

main() async {
    api = Api(NODE_URL);

    print('Before transferring, sender\'s balance: ${await getBalance(TestAddress)} CKB');

    print('Before transferring, first receiver\'s balance: ${await getBalance(ReceiveAddresses[0])} CKB');

    print('Before transferring, change address\'s balance: ${await getBalance(changeAddress)} CKB');

    var hash = await sendCapacity(receivers, changeAddress);
    print('Transaction hash: $hash');

    // waiting transaction into block, sometimes you should wait more seconds
    sleep(Duration(seconds: 30));

    print('After transferring, sender\'s balance: ${await getBalance(TestAddress)} CKB');

    print('After transferring, receiver\'s balance: ${await getBalance(ReceiveAddresses[0])} CKB');

    print('After transferring, change address\'s balance: ${await getBalance(changeAddress)} CKB');
}

Development

If you want to develop by yourself, you can download this project to your local.

git clone https://github.com/duanyytop/ckb_sdk_dart.git
cd ckb_sdk_dart

pub get                       // download and install dependences
pub run test                  // run sdk unit tests

dart ./example/main.dart       // run rpc request example, you should run a ckb node in your local
dart ./example/single_key_single_sig_tx_example.dart    // run simple transaction example, you should run a ckb node in your local
dart ./example/multi_key_single_sig_tx_example.dart    // run multi keys transaction example, you should run a ckb node in your local

Features and bugs

Please create pull requests or issues in this GitHub repo if you want to contribute new features or find bugs.

Welcome to join us. Thanks.