Surveys and the new Web3 data economy

Your opinion matters. It matters so much that the global online data market estimate is to be over US$270 billion dollars, all focused around buying and selling of your data to the highest bidders. It is a very complex web of transactions that ferry your data from one place to another and many times, your data is used in ways you never realized could be used for. From Cambridge Analytics’ controversial use of data to TikTok’s alleged aggressive data harvesting, there is a large market for your information and how it is used is very unclear.

The current Web2 market for surveys is in the exchange of your data. This means your opinion is collected, filtered, analyzed, sold and bought. The data may be collected anonymously, or it may be tied to your identity. Either way, this data is collected and managed by a centralized system, which has control over the data they purchased. There is also the ever growing concern of bots and AI scripts that automate and duplicate fake data leading to data integrity issues.

Figure 1: Traditional survey

One of the ways a decentralized blockchain can help change the landscape of the survey market is through dissolving the centralized control problem. Because the data can be made public, and with no single point of control of the data, you can be sure that the data can reside on-chain and has no central ownership or control. However, this can create problems with privacy. All data is now public and this creates two issues.

  1. Privacy is lost. On a traditional blockchain, all information is public and is immutable. This means the data you entered in for a particular survey will be available for everyone to view,
  2. The data market is lost. Because the data is now publicly available, anyone can pull it for free and use it for their own purpose.

A unified public and private smart contract, like the one Partisia Blockchain supports, enables the best of both worlds and solves the two issues above, where you now have a decentralized blockchain that eliminates any controlling entity while still being able to privatize your data. Not only does this retain the data marketplace but redefines it in a way where the user now has control over the data.

Figure 2: Public versus private blockchain data records

The online survey industry is large and is continuously growing. And this is because surveys hold a lot of valuable data. As reviewed in our earlier article on privatized voting, we use multiparty computation (MPC) on the blockchain to hide your data on-chain, but still allow for computing of the data.

Figure 3: Privatized but computable survey data

While the private voting use case reviewed a very simple computation on who the winner of an election was, Partisia Blockchain’s programming language allows full algebraic equations to be used to calculate any number of computations using the hidden data. This means not only being able to compute on a single category, but also combine results of the computation from multiple categories.

Figure 4: Full support of various analysis using hidden data

This change in privacy of your survey data creates a new change in how the data marketplace can be viewed. By allowing the survey participants ownership of their data, but still allowing for the computation of it, the marketplace of the data has now shifted from buying and selling of your data to buying and selling of the “use of your data”. You now still hold ownership of the data and you are now selling the use of your data while still keeping your data private. This paradigm shift creates new opportunities for a different marketplace where you are not just selling your data one time, but rather allow for the possibility of both updating of the data in real time as well as being rewarded each time your data is used. And through privatized authentication, the data quality improves as well leading to better accurate analysis.

Figure 5: A new data economy through ownership of your data

For additional insights on this use case, we recommend viewing our Q&A session.

By creating a programming language that allows for developers to use MPC in a generic way, Partisia Blockchain has made the creation of applications that can harness the power of MPC for different use cases a possibility. Partisia has been at the forefront of providing private MPC solutions since 2008. And by layering this technology on top of an interoperable and scalable blockchain, Partisia Blockchain is now paving the way for anyone to create solutions that can balance privacy and transparency to build trust.

To learn more about different use cases or partner with us for solutions, please visit, check out our Medium articlesdevelopment documentations or email us at