Cardstack is an open-source framework and consensus protocol that makes blockchains usable and scalable for the mass market.

Project stage

Beta version

Detailed description

Cardstack is a leap forward for blockchain at every layer of the software stack - providing a toolset that unlocks the potential of the decentralized Internet for everyone.

App Framework
Cardstack Framework is a comprehensive SDK for building powerful, cohesive blockchain apps. At the core is Cardstack Hub, which orchestrates data and value transfer across multiple blockchains and the cloud.

Aggregation Protocol
Cardstack-powered dApps can tap into the Tally protocol, which gives dApps the power to perform complex computations to organize large networks of users — such as batching payments, counting votes, and rewarding good work.

Ecosystem Token
Developers can monetize their Cardstack- based apps via the smart contracts powered by the Cardstack Token (CARD), an Ethereum-based ERC20 token designed to fairly reward Cardstack- powered communities.

Cardstack’s approach to decentralizaton lets self-sovereign users act as their own hub, so that interactions with applications and services running on networks of different topologies flow through a software stack controlled by the users.


Centralized tech giants force us into silos, and capture the value we create. Early decentralized tech like Bitcoin demonstrates the promise of blockchain, but has only delivered gains to a handful of enthusiasts. Cardstack is a leap forward for blockchain at every layer of the software stack—providing a toolset that unlocks the potential of the decentralized Internet for everyone.


Developers can use the Cardstack Framework, a comprehensive SDK, to create powerful, card-based blockchain apps. Build anything using modular narrative and discovery containers. Easily construct custom workflows using our Cardstack Hub, which orchestrates data and value transfer across multiple blockchains and the cloud. Drop in ready-touse functionality like searchable indexes, realtime notifications, uniform user permissions, flexible containerized deployment, and much more. Everything is extensible, and is 100% open-sourced. Cardstack is a revolutionary experience layer that makes blockchain technology usable and scalable—creating a decentralized software ecosystem that can challenge today’s digital superpowers. 

This ecosystem is governed by smart contracts powered by the Cardstack Token (CARD), an Ethereum-based ERC20 token. CARD isn’t just any old cryptocurrency: it’s designed specifically to create a sustainable marketplace where open-source developers are rewarded fairly, while allowing users to curate and combine the perfect mix of software services to fit their needs. Just like other cryptocurrencies, CARD users can become miners to validate transactions and earn fees. But unlike Bitcoin—which forces miners to solve useless math problems —Cardstack analytic miners help calculate the reward function of who gets paid out what, while sifting out spam, making the system fair and resilient. Analytic miners’ results compete in a sortition scheme we call proof-of-analytics, so reward algorithms are never under a single party’s control.


For End Users:

  • Mix and match multiple dApps and cloud apps; 
  • Create amazing new workflow and app combinations using Cardstack Hub; 
  • Use one token (CARD) that forms retainer agreements with all the services you need; 
  • Keep your data sovereign, or transmit it anywhere easily, with our card-based user experience; 
  • Get started quickly with fiat currency: no crypto expertise required. 

For Developers: 

  • Use our comprehensive SDK to build powerful, beautiful, extensible apps; 
  • Access a deep library of powerful drop-in functionality; 
  • Improve your app experience using Cardstack’s off-chain aggregation; 
  • Get paid fairly by our community-run payment and governance algorithm; Get reimbursed for your material costs; 
  • Keep things 100% open-source. 

For Analytic Miners: 

  • Do the useful work of powering community-run algorithms that create a fair distribution of wealth; 
  • Help protect the system against outliers, bad-faith actors, and spam; 
  • Earn fees in the form of Cardstack Tokens that can be held or circulated back into the ecosystem; 
  • Get compensated via a sortition scheme that prevents single parties controlling the reward function.
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Additional links

  • Token details

    • Token symbol ? Token symbol — a shorten token name. It is used during an ICO and after the coin listing at the cryptocurrency exchanges. : CARD
    • Fundrasing target ? Fundraising target — the maximum amount of funds to be raised during an ICO. When it is reached, the developers stop selling the tokens because they do not need to raise more money for the project development. : 35,000,000 USD
    • Token type ? Token type — a platform for a startup launch that influences the stability of blockchain operation, the speed of transactions and the fees. :Ethereum (ERC20)
    • Soft cap ? Soft cap — the minimum amount of funds to be raised for the project development. Sometimes when the soft cap has not been reached, the money is returned to the participants. :10,000,000 USD
    • Role of token ? Role of Token — type of token depending on the opportunities it offers to its owner. Utility tokens give their owners a right to use the project services, security tokens are aimed at bringing profit, and currency tokens are a money substitute. :Hybrid token
    • Total supply ? Total supply — a total amount of tokens that will be released by the developers. :10,000,000,000 CARD
    • Escrow agent ? Escrow agent — a qualified agent who has the right of signature in a multisig wallet. An escrow agent participates in an ICO, monitors the financial operations of the developers and confirms their fairness. :No
    • Tokens for sale ? Tokens for sale — the number of tokens offered to the participants of an ICO. :NA
    • Whitelist ? Whitelist — a list of participants, who get an opportunity to buy tokens. To be whitelisted, you need to register on time because the number of participants and the registration period are usually limited. :Whitelist Closed
    • Additional emission ? Additional emission — an additional release of tokens. It can be done once after the crowd sale or on an ongoing basis. In the projects with a limited emission there is no additional emission. :No
    • Exchange listing ? Exchange listing — an assumed date when the token will be listed at a cryptocurrency exchange. The developers usually indicate it in a roadmap and a white paper. :NA
    • Accepting currencies ? Accepting currencies — cryptocurrencies and fiat currencies that can be used for buying the project tokens. :BTC, ETH, USD,
    • Can't participate ? Can't participate — the countries where it is prohibited to buy tokens. These can be countries where ICOs are prohibited altogether, or countries that have the requirements that a particular project does not meet. :Cuba, Iran, North Korea, USA,
    • Know Your Customer (KYC) ? Know Your Customer — a verification procedure for ICO participants, during which the developers can ask for personal data, a photo and a scanned copy of a passport of a potential investor. :No
    Get details
  • Token and Funds Distribution

    Token distribution date

    60% of the generated tokens will be distributed in Year 1 through early contributor agreements, pre-allocation, crowd fundraiser, airdrops, Year 1 ecosystem initiatives, and advisors/partners allocations. Allocated tokens will be available for peer-to-peer usage at the conclusion of the crowd fundraiser, which will begin no more than 60 days from the conclusion of the pre-allocation period. 

    The airdrop awards will occur throughout the first year, with each airdrop event limited to 2% of the generated tokens. There will be a public announcement at least 30 days before each distribution event, allowing interested participants to prepare their prerequisites for the awards.

    Unsold tokens

      • Token Distribution

          Vesting notes

          • Token Sale: 1 year
          • Cardstack Syndicate & Team reserve: 4 year vesting after Year 1
          • Cardstack Foundation reserve: 5 year vesting after Year 1
          • Airdrops: 2% per drop
        • Funds Distribution

      Sale schedule

      Round Token Price Bonus Min / Max Purchase Soft Cap Hard Cap
      Main Sale — Ended
      01 May 10:00 UTC
      01 Jun 10:00 UTC
      0.017 USD No Min 0.1 ETH 10,000,000 USD 35,000,000 USD
      Presale — Ended
      06 Mar 00:00 UTC
      08 Mar 00:00 UTC
      NA 10% - Uncapped Uncapped
      • Team

        • Chris Tse photo
          Chris Tse
          Founding Director
        • Ed Faulkner photo
          Ed Faulkner
          Lead Developer
        • Hassan Abdel-Rahman photo
          Hassan Abdel-Rahman
          Sr. Blockchain Developer
        • Will Bagby photo
          Will Bagby
          Senior Developer
        • Alex Speller photo
          Alex Speller
          Senior Developer
        • Burcu Noyan photo
          Burcu Noyan
          Design Technologist
        • Wilfred Chan photo
          Wilfred Chan
          Managing Editor
        • Kaeleigh Forsyth photo
          Kaeleigh Forsyth
          Writer / Editor
        • Jacqueline Thong photo
          Jacqueline Thong
          Head of Operations
        • Justin Thong photo
          Justin Thong
          Data Scientist
        • Ken Rossi photo
          Ken Rossi
          UX Lead
        • Chris Gardella photo
          Chris Gardella
          Lead Designer
        • Katrin Nusshold photo
          Katrin Nusshold
        • Steve Bobrov photo
          Steve Bobrov
          SR QA Engineer
        • Dmitry Naidionov photo
          Dmitry Naidionov
          Product Manager
      • Advisors

        • Aaron Sikes
          Senior Developer
        • Venkat Dinavahi
        • Maximillian Kirchoff
          Interaction Designer
        • Isla Bell Murray
          Interaction Designer
        • Balint Erdi
          Senior Developer
        • Anne Wright
          Event Producer


      • 2017
        Released as Open Source
        • Cardstack for Developers
        • Content Management
        • Search & Discovery
        • Workflow System
        • Hyperledger Sawtooth
        • Ethereum VM
        • Git as Truth
        • Cardstack Token (CST)
      • 2018
        Available to Early Adopters
        • Cardstack for Users
        • Contextual Messaging
        • Membership Affiliations
        • Global Billing
        • Docker Containers
        • Matrix Communications
        • Cloud Orchestration
        • Containerized Components
        • Proof-of-Analytics
      • 2019
        Network Ready for Business
        • Cardstack for Networks
        • Card Catalog
        • Automated ML Agents
        • Stakeholder Governance
        • Peer-to-Peer Node
        • Native App Shell
        • Continuous Synchronization
        • In-Hub / At-Edge Machine Learning