Grin and Ironbelly


Ivan Sorokin

  • Grin contributor
  • Creator of Grin Mobile wallet Ironbelly
  • Co-organizer of Grin Berlin meetup


  • In-progress implementation of the Mimblewimble protocol written in Rust
  • No: ICO, CEO, DevCo, premines, pre...
  • Funded by donations, open source, community driven
  • Launched days ago, market cap ~ $M

Key features

  • Elliptic Curve Cryptography
  • Confidential transactions
  • Fungibility
  • Scalability

but there are some challenges to overcome

No scripts

But scriptless scripts are possible!

Interactive transactions

Grin aims to be a minimal implementation of the Mimblewimble protocol, so an ecosystem is assumed to be built by the community

November 2018

  • Couple of months till the launch
  • No mobile wallet
  • Official CLI Grin wallet written in Rust




Named after a species of dragon - Ukranian Ironbelly. One of them guarded some of the oldest and deepest vaults in Gringotts.

Grincon0, Berlin, 9 Nov 2018


Rust + React Native

  • Both are cross platform (iOS & Android)
  • I have experience with React Native
  • Fast UI/UX experimenting

Short overview

  • Open source
  • Uses official `grin-wallet` source code
  • iOS version is available in TestFlight
  • Android version will be released soon
  • Withdrawal using File / HTTPS methods
  • Depositing using File only method



  • Some exchanges run outdated node/wallet software
  • Some exchanges support only HTTPS withdrawal
  • Files manipulation on iOS is hard :(
  • Interactive transaction is hard to understand for majority of the users
  • I'm no designer, so the app looks hm... :)
  • Project contributors list is very short

Want to test?


twitter/github/gitter/telegram: @i1skn

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