In a Nutshell
Exonum enables you to build decentralized, secure and reliable blockchain applications. It is designed to allow people, companies and governments to design custom private or permissioned blockchains that benefit from the unmatched security of public blockchains.
Exonum brings all the advantages of a true blockchain — auditability, transparency, and unparalleled security — and combines them with privacy, efficiency and controllability.
Your next step to blockchain is here. Your next step is Exonum.
Exonum's Byzantine Fault Tolerant consensus algorithm excludes single points of failure and makes your blockchain solution resilient against node crashes or bad actors.
All received information is validated on the client side with the help of Exonum light client, securing clients against MitM attacks.
Anchoring data to Bitcoin network protects Exonum against history revisions by leveraging the tremendous security of the Bitcoin Blockchain.
To achieve top levels of security, performance and concurrency, Exonum uses the Rust programming language, and offers Java-binding for Java developers as well.
How it works
A blockchain is more innovative and secure than a database. It is decentralized (not stored in any single location), meaning the records it keeps are protected against falsification. Easily auditable by design, it has a tamper-resistant and authorized transaction history assured via cryptography.
Blockchains can be public or private. The main difference between the two types is how the default permissions built into the network allow new blocks to be written to the chain. Exonum can operate as either a private or permissioned public blockchain.
No single point of failure or excessive influence.
Transactions are viewable by all parties and transaction history cannot be unnoticeably altered or deleted.
Everything stored in your Exonum Blockchain is secured with cryptographic proofs. The data you provide will not be tampered with or altered.
Exonum uses a custom-built Byzantine consensus algorithm that keeps your data safe without needing to “mine” blocks, even when your nodes malfunction or become vulnerable to actors. This feature also makes it nearly impossible for a bad actor to add incorrect data or change the history in your Exonum Blockchain. Even if many nodes are compromised, your Exonum Blockchain still maintains its fundamental security properties, protecting your data. Your Exonum Blockchain also updates immediately with the addition of every new block. This consensus algorithm also enables your Exonum Blockchain to handle as many as 5,000 transactions per second (TPS) within a global, distributed network with a clearing latency of 0.5 seconds, and can handle up to 15,000 TPS in custom cases.
Exonum handles up to 5,000 transactions per second with a clearing latency of 0.5 seconds, and can handle up to 15,000 TPS in custom situations.
Your Exonum Blockchain can function even if up to 1/3 of the nodes in your Blockchain network are offline or compromised.
In the rare case all of your Blockchain nodes are compromised, bad actors cannot circumvent Exonum’s fundamental security properties.
Anchoring is the process of saving a fingerprint (a hash) of a system state to a public source. Anchoring removes the need to trust the administrator(s) of an Exonum Blockchain unconditionally; at the same time, it keeps sensitive data private.
Exonum has built-in anchoring on the Bitcoin Blockchain, making costs of an attack on any Exonum Blockchain comparable to that of the entire Bitcoin network.
The Bitcoin Blockchain provides a qualitatively new level of security of Exonum data.
Users of an Exonum-based Blockchain would immediately notice any manipulation with the data and act immediately to restore security.
The decision to anchor is made when a group of validators reach a consensus. This consensus is irreversible and, due to the decentralized nature of the validators, eliminates any single point of failure.
Client-side data validation makes “man in the middle” attacks — or even a completely compromised node that the client communicates with — impossible.
Exonum is based on Rust, the most secure programming language to date. Rust is a systems programming language designed to be safe, concurrent and practical. It is similar to C++ with emphasis given to thorough memory management which protects against many common errors in programming. Rust is currently faster than Java and Go programming languages and continues to improve.
Rust uses a powerful static code analyzer and type system inspired by functional programming languages to assure execution safety.
Rust is among the fastest and most secure programming language. Rust is also predictable in its use of resources (CPU, memory, I/O, etc).
Exonum offers a new way to prove document authenticity — distributed trusted timestamping. Each document receives a digital fingerprint that is stored on the Exonum Blockchain to verify document existence and integrity at a certain point in time. Notarial and other certificates, prescriptions and coupons are a few use cases where the Exonum platform — protected from forgery and backdating — can be useful.See Demo
Understanding a situation at a specific moment in time can be a challenge in systems where different parties use different internal systems to manage workflow. In this case, blockchain can act as a single point of truth, providing relevant information to all participants. The Exonum framework can manage any business logic to establish a system in which all parties are confident they have all the relevant information.
Big publishing companies involve numerous intermediaries and dictate artists’ rights management, leaving them with only a fraction of their earnings. Exonum can help establish an automatic platform to ensure all parties are taking rules into account. By using the powerful smart-contract system, you can create a transparent and robust money flow control system.See Demo
Complicated KYC/AML procedures and aggressive risk scoring makes peer-to-peer lending a “high risk — high gain” area of investment. Blockchain can affect value chain in a very positive way, providing an unprecedented level of transparency. Exonum protects investments and borrowings by allowing auditing on a real-time basis.
A useful e-voting application requires a central authority and a way to guarantee vote secrecy. Blockchain is the natural solution to these problems and guarantees the integrity in the voting process to all participants. Exonum modular architecture allows easy integration of specific cryptography tools, providing the highest level of transparency while also keeping sensitive data secure.See Demo
Existing auctions can abuse their centralized nature and use the power of system maintainers to provide dishonest advantages to some participants. In this case, average users may feel unprotected against malicious parties trying to violate the rules. However, the Exonum smart-contact system can enforce business logic usage to guarantee process integrity and data safety.
Your Exonum Blockchain can be used to create an entirely new process for citizen-government interactions. It can keep records safe while also offering a citizen true control of his or her assets.See Demo
National Agency of Public Registry
By using blockchain technologies, NAPR can provide its citizens with a digital certificate of their assets, supported with cryptographical proof published to the Bitcoin Blockchain.
The main goal of the project was to develop the most secure solution to provide citizens and governments with data safety, auditable processes and transparency.
This important project will show that governments that transfer their property registries to a blockchain-based system can establish a more transparent and well-recorded system that ultimately benefits the people and advances economic opportunity for all.
State Agency for eGovernance of Ukraine
The government of Ukraine uses a System of Electronic Trading in Seized Property, or SETAM, to auction seized property.
This system is being moved onto an Exonum Blockchain that will enhance citizen trust in the system and provide an extra layer of security.
Ukraine will be the first country in the world to introduce blockchain-based electronic auctions. This innovative technology utilizes decentralized information storage and security while ensuring full transparency of state registries and services, which allows for public control of all actions.
The Bitfury Group, the world's leading full service Blockchain technology company, announced a strategic partnership with BestSign, the largest digital signature platform company in China.
The agreement is intended to revolutionize the online processing of documentation by BestSign.
Deal with Bitfury can not only... advance the application of blockchain technologies such as distributed ledger and smart contract, but also better help our clients by providing them with better products to enable safer contract signature and storage through blockchain technology.
Bitfury has partnered with Washington, D.C. insurance advisory and brokerage firm Risk Cooperative. The partnership is focused on pioneering blockchain applications in the $60 billion insurance intermediation market.
Risk Cooperative sees the deal as positioning the firm as “first movers” in the adoption of blockchain in the insurance value chain.
This is no small feat, but with Bitfury’s strategic and operational leadership in Blockchain technology we can be bold in our advance.