Cardano Dart Types

A lightweight, open-source Dart/Flutter library providing Cardano blockchain data types and serialization utilities. This package is part of the Cardano Flutter SDK and is designed to be used in Cardano wallets, explorers, and dApps built with Dart or Flutter.

You can use this package standalone to manage Cardano types and perform serialization/deserialization. For more advanced features such as transaction signing and wallet operations, check out the Cardano Flutter SDK.

Features

Comprehensive Cardano blockchain data models (addresses, transactions, UTxOs, voting, proposals, certificates, etc.)
CBOR serialization/deserialization for all types
Utilities for working with Cardano addresses (Bech32, Base58, hex, etc.)
Support for Cardano governance/voting types (CIP-1694, etc.)
Freezed data classes for immutability and pattern matching
Well-tested and production-ready

Installation

Add the following to your pubspec.yaml:

dependencies:
  cardano_dart_types: ^2.9.1

Then run:

dart pub get

Usage

Import the package:

import 'package:cardano_dart_types/cardano_dart_types.dart';

Example: Parse and Inspect a UTxO

import 'package:cardano_dart_types/cardano_dart_types.dart';

void main() {
  final hex = "828258202eae380975b17328970363c1729b95656d9fa121491847879020d09fd1ab453602825839016b33a292d5b19b2e7a4f78d007ed76050d0a4fed5b0b646c7ca1695fb8ed3be27550543f410a2f770642b1b0c2948887315390615260efa8821a4d76a64ba1581c8c9a2d459d2d8dc7c11192f971ab647fac65833121b7e8181e583c64a158203ef937764ed6b36a07b041ab5d1de7f7d776dc711e402d25a5f1d764c535fb4e1a000f3fb1";
  final utxo = Utxo.deserializeHex(hex);
  print(utxo.toJson(prettyPrint: true));
}

See the example/ directory for more usage examples:

parse_value_example.dart — Parse and inspect Cardano values
utxos_example.dart — Parse and print UTxOs
parse_hex_tx_example.dart — Parse Cardano transactions from hex
parse_datum.dart — Parse datum from transactions

API Reference

All main types and utilities are exported from package:cardano_dart_types/cardano_dart_types.dart.

Addresses: CardanoAddress, CardanoAddressBase, CardanoAddressReward, etc.
Transactions: CardanoTransaction, TransactionInput, TransactionOutput, etc.
UTxOs: Utxo
Voting & Governance: GovActionId, Vote, Voter, VotingProcedure, etc.
Certificates, Proposals, Metadata, and more

See the source code and doc comments for details.

Contributing

Contributions are welcome! Please open issues or pull requests on GitHub.

Fork the repo and create your branch from main.
Add tests for new features or bug fixes.
Ensure all tests pass (dart test).
Open a pull request with a clear description of your changes.

License

This project is licensed under the MIT License.