multipartycomputation

Multi-party computation (MPC) or secure MPC (SMPC) is a way for a bunch of people to work out something secret together. It keeps things private, especially on the internet, where it's hard to keep secrets. To understand MPC, here's a simple example.
Imagine three blockchain workers at a Web3 startup. They want to find out their average pay without telling each other how much they make. They use an MPC protocol to find the average without giving away any secrets. The MPC uses a trick called additive secret sharing to divide the secret between the workers. This lets someone find the average without talking to the workers directly.
MPC depends on two important things: keeping things private and getting the right answer. Even if some workers don't follow the rules, MPC stops them from making others tell lies or sharing secrets they are not supposed to share.
History of Multi-Party Computation
MPC is a subfield of cryptography that started in the 1970s, with real uses starting in the 1980s. But unlike traditional cryptographic techniques, which are often used to protect information from outsiders, MPC uses cryptography to ensure data privacy between participants of the same system. 
As such, MPC technology is now applied to a range of use cases, such as securing digital assets in MPC wallets or keeping certain information private during digital auctions.
What Is an MPC Wallet?
As the name suggests, an MPC wallet uses multi-party computation technology to offer enhanced security for your cryptocurrencies and other digital assets. It basically splits a wallet’s private key among multiple parties to increase privacy and reduce the risks of hacking, breaches, and losses.
But isn’t that what multisig wallets do? Well, not really. Multisig and MPC wallets were both designed to increase privacy and enhance security, but their working mechanisms are different.
MPC Wallets vs. Multisig Wallets
A multisig wallet sends blockchain transactions through a unique signature that requires the authentication of two or more private keys (one private key from each party). MPC wallets, however, divide a single private key among the multiple parties. While they may sound similar, there are technical implications that make MPC wallets more flexible and easier to implement.
Benefits of MPC Wallets vs. Other Crypto Wallets
Among the different types of crypto wallets, custodial wallets are the ones that hold and manage your assets and private keys. In contrast, non-custodial wallets are the ones that allow users to hold and control their private keys. 
The non-custodial wallets are often seen as safer storage options as users don’t need to trust a service provider or a third party with their keys. However, being in full control over your wallets and keys also has disadvantages (especially for beginners). These wallets usually require some degree of technical knowledge, and users need to make sure their keys don’t get lost or stolen.
MPC wallets can provide the best of both worlds. They are getting more popular because they can offer enhanced security with more convenience, eliminating or reducing the problems faced by other wallets.
In short, the benefits of MPC wallets are:
Increased privacy: data is encrypted in all parts of the process, and there is no need to trust third parties.Increased security: removes single points of failure. The secret key is spread among multiple parties and locations.More convenience: you can hold your assets online. No more need for cold storage.
What Are the Downsides of MPC Wallets?
Slower: Increased security often leads to slower performance as it requires extra computational work, especially when generating private keys and their secret shares.Higher costs: Sharing and computing data between multiple parties (and sometimes multiple networks) can increase costs significantly.
MPC Wallet Use Cases
MPC technology has become the top choice for strong security solutions in big institutions because of the many benefits it offers. Well-known financial companies have started using MPC to keep their assets safe from both inside and outside threats.
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Partisia Blockchain (MPC) is redefining the crypto ecosystem with cutting-edge multi-party computation (MPC) technology that enables secure and privacy-preserving collaborations. Its scalable solutions are transforming DeFi, secure voting, and confidential computing. CEO Adrienne Youngman answered our questions about the MPC token and Partisia’s vision.
What drives Partia Blockchain, and what long-term impact does it aim to achieve?

Partisia Blockchain is to data what Bitcoin is to money: a revolution in trust and control.
Before Bitcoin, you had to entrust financial institutions with your money or hide it under the mattress. Similarly, before Partisia, you either shared your data indiscriminately or disconnected from the digital world entirely.
Using Multi-Party Computation (MPC), individuals and organizations can retain ownership of their data while enabling secure, selective interactions. For instance, a bank could perform a custom Know Your Customer (KYC) check that meets regulatory standards without requiring users to upload sensitive information into another opaque system.
Where Zero-Knowledge (ZK) Proofs allow you to query a single data point for a binary yes/no response, MPC enables queries across multiple secure data sources and supports rich computations.
Examples:
A ZK Proof could verify if someone holds a credential proving they’re over 18.MPC could calculate a credit score from encrypted financial data or run AI models on prompts containing an encrypted file for private information.Retaining ownership of data empowers us, enabling us to control what we reveal. At Partisia Blockchain, we enable data owners to safely embrace technological advances, for a more empowered digital future.

How does Partia Blockchain stand out in the competitive blockchain ecosystem?
Our unmatched expertise in privacy-enhancing technologies sets us apart.
One of our founders authored the first paper on Multi-Party Computation (MPC) in 1988 and co-invented the Merkle-Damgård hash function, a cornerstone of modern cryptography. Since then, we've published over 1,000 research papers and helped shape regulations like the European Digital Identity regulation (eIDAS) and emerging standards for tokenized real-world assets (ERC-3643).
For over 16 years, our development company has implemented privacy enhancing technologies at scale, delivering solutions for clients like the Danish government (Project Oscar), enterprises such as Bosch, and organizations like the Red Cross.
As AI continues its exponential growth, privacy-enhancing technology like MPC will be critical. Only Partisia combines the depth of expertise and technology necessary to empower developers to create the solutions that will re-empower humanity.
What mechanisms are in place to protect users' data and ensure platform security?
Partisia Blockchain employs advanced cryptographic techniques to secure data at every stage. MPC ensures data remains encrypted during computations, preventing unauthorized access while enabling seamless interactions. Combined with robust consensus protocols, these mechanisms deliver unparalleled data security without compromising usability.

Key Use Cases:
As blockchain expands into real-world use cases, MPC will play a pivotal role at that real-world intersect. This might include:
Sovereign Identity Solutions: increasing trust in decentralized environments.Privacy-Preserving Compliance: enabling KYC, KYB, and AML without compromising privacy.Confidential Data Sharing: enabling confidential information to come on-chain.
MPC allows data owners to retain custody of their information while selectively sharing insights and information with those who need them.
However, in the mid to long term, MPC’s greatest potential lies in its intersection with AI. 
Our lack of concern about our digital footprint could have grave consequences in a world where data can be scraped, organised, and analysed like never before. When it can be harnessed within models that increasingly control access to services and products. As AI evolves, retaining control over our digital footprint will be essential.
Privacy Preserving Inference could enable us to interact with models on encrypted data - gaining the insight we need without surrendering sensitive information In future we may even be able to train AI models on encrypted datasets, unlocking innovation without sacrificing privacy.
What consensus protocol powers Partia Blockchain, and why was it chosen?
Partisia Blockchain utilizes the FastTrack consensus protocol, designed for high-speed transaction finalization and robust network security.
FastTrack employs an optimistic "trust but verify" model. A designated proposer generates blocks that are immediately executed by nodes once signed. When two-thirds of nodes sign off, the network achieves Proof-of-Justification (PoJ), ensuring block validity.
This approach delivers real-time transaction finalization while addressing limitations of traditional Byzantine Fault Tolerance (BFT) systems, offering both speed and scalability.

How does the platform handle high transaction volumes and ensure seamless scalability?
Partisia Blockchain’s complete sharding architecture enables each shard to operate as an independent blockchain, processing transactions in parallel.
Horizontal scaling ensures new shards can be added dynamically to meet demand, maintaining performance even during peak activity. Combined with the FastTrack consensus protocol, this design delivers unparalleled scalability and throughput, ensuring seamless user experiences under heavy load.
Which partnerships have been crucial, and how do they enhance the ecosystem?
Partisia Blockchain was designed to deliver MPC-as-a-Service across chains. We support multiple tokens for gas (e.g., POL, ETH, wBTC, BNB, USDC, USDT), enabling projects to leverage our privacy infrastructure while driving value to the primary chain.
Examples of collaboration:
Profila (built on Cardano): Utilizing Partisia for privacy-preserving data interactions.
Varmeta (on BNB): Implementing data privacy solutions for their ecosystem.
For native projects, we’ve partnered with DeFi builders, including:
zkCross: Launching a DEX.Boosty Labs: Developing a lending protocol.A liquid staking protocol (launching soon).
Our hybrid approach, combining private and public blockchain solutions through partnership with our Development Company (Partisia Inc), has also attracted large Web2 enterprise discussions. We anticipate announcing high-impact partnerships in the coming months.
What exciting developments or expansions can we expect in the near future?
The primary focus for the next 6 months is facilitating and accelerating adoption.
Key initiatives include:
Streamlining user journeys for node operations and delegated stakers.Relaunching documentation and toolkits to better empower developers.Following a successful proof of concept for running AI models on encrypted data, we’re expanding functionality and engaging with partners to explore new applications.
What initiatives are in place to empower developers and engage the community

We’re currently reviewing and expanding our community initiatives, with significant announcements expected before Christmas.

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