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Bitcoin protocol toolkit for Swift
.package(url: "https://github.com/yenom/BitcoinKit.git", from: "v1.1.0")

BitcoinKit: Let’s Play with Bitcoin in Swift! TravisCI Swift 5.0+ Carthage Swift Package Manager CococaPods

Welcome to BitcoinKit

The BitcoinKit library is a Swift implementation of the Bitcoin protocol which support both BCH and BTC. Improving the mobile ecosystem for Bitcoin developers is our mission.

BitcoinKit allows maintaining a wallet, sending or receiving transactions without a full blockchain node. Following is a wallet app that demonstrates the way to use it.

Release notes are here.



  • Encoding/decoding addresses: base58, Cashaddr, P2PKH, P2SH, WIF format.
  • Transaction building blocks: inputs, outputs, scripts.
  • EC keys and signatures.
  • BIP32, BIP44 hierarchical deterministic wallets.
  • BIP39 implementation.
  • SPV features are under construction. The following functions cannot work well sometimes.
    • Send/receive transactions.
    • See current balance in a wallet.


  • iOS 9.0+ / Mac OS X 10.11+ / tvOS 9.0+ / watchOS 2.0+
  • Xcode 10.0+
  • Swift 5.0+



$ gem install cocoapods

CocoaPods 1.5.0+ is required to build BitcoinKit.

To integrate BitcoinKit into your Xcode project using CocoaPods, specify it in your Podfile:

source 'https://github.com/CocoaPods/Specs.git'
platform :ios, '13.0'

target '<Your Target Name>' do
    pod 'BitcoinKit', '~> 1.1.0'

Then, run the following command:

$ pod install


Add this to Cartfile

github "yenom/BitcoinKit" ~> 1.1.0

Run carthage update to build the framework and drag the built BitcoinKit.framework into your Xcode project.

Swift Package Manager

Simply add the following lines to dependencies of your Package.swift:

.package(url: "https://github.com/yenom/BitcoinKit.git", .upToNextMinor(from: "1.1.0"))

Note that following data types and features are currently not supported on Linux platform.

  • Peer and PeerGroup
  • SQLite based BlockStore


Contributions to BitcoinKit are welcome and encouraged! Feel free to open issues, drop us pull requests.

Authors & Maintainers


BitcoinKit is maintained and funded by Yenom. Visit our website or say hi on twitter (@Yenom_wallet_en)


BitcoinKit is available under the MIT license. See the LICENSE file for more info.


This project exists thanks to all the people who contribute.


Thank you to all our backers! 🙏 [Become a backer]


Support this project by becoming a sponsor. Your logo will show up here with a link to your website. [Become a sponsor]


Stars: 755
Last commit: 5 weeks ago

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iOS Software Engineer @ Perry Street Software
Perry Street Software is Jack’d and SCRUFF. We are two of the world’s largest gay, bi, trans and queer social dating apps on iOS and Android. Our brands reach more than 20 million members worldwide so members can connect, meet and express themselves on a platform that prioritizes privacy and security. We invest heavily into SwiftUI and using Swift Packages to modularize the codebase.

Related Packages

Release Notes

1 year ago

⬆️ Swift 5.0

Now we support Swift5.0!

⭐️ New Features

  • Plan, Build and Sign a transaction #228
  • QRCode support #158
  • ECPoint multiplication methods #219

♻️ Refactor

  • Mnemonic #227
  • HDWallet #228
  • Address #232

🐛 Fix bugs

  • Key derivation bug #220

And more...!

  • Add merkleblock and proof of work check #170 #153
  • Add BlockMessage.computeMerkleRoot() #215
  • Using secp256k1 library instead of openssl #218 #203
  • Fix typos #179
  • Modify README #180 #208 #211

✅ All Merged PRs

All PRs since v1.0.2

  • #158
  • #159
  • #161
  • #167
  • #169
  • #171
  • #173
  • #211
  • #208
  • #179
  • #168
  • #215
  • #170
  • #218
  • #219
  • #220
  • #220
  • #222
  • #223
  • #226
  • #227
  • #228
  • #229
  • #232

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