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Scalable. Fast. Secure.

CΔ is a powerful new proof-of-stake blockchain based on the Casanova protocol. Blockchain made decentralized financial transactions possible. CΔ makes them fast and secure at global scale.

A Cryptocurrency for a Global Economy

C∆’s innovative consensus protocol makes it possible to achieve global transaction scale, lightning fast confirmation, and the security of true finalization. C∆ is the first of its kind–a blockchain with all the features needed to realize the revolutionary potential of cryptocurrency.

C∆’s technology scales to meet the need of our increasingly global economy, with transactions executed in a fraction of the time and cost. C∆’s unique security model allows cryptocurrency to be used convincingly, even at the retail point-of-sale.

Whether overseas or at the local grocery store, C∆ makes peer-to-peer transactions possible and practical at a scale never achieved before.

What Is CΔ?

CΔ is a blockchain based on Casanova, a new consensus protocol whose performance and security were proved using long-standing, time-tested mathematics. In a competitive global economy, you want to transact with everyone while trusting no one. C∆ makes it possible.

Global Transaction Throughput

C∆ is built on the breakthrough consensus protocol, Casanova. Using “optimistic consensus,” Casanova allows the C∆ nodes to perform the hard work of consensus finding only when there are conflicts. As a result, C∆ processes vastly more transactions per second than our competitors. With just a few thousand validators, C∆ will perform roughly 2,000 times better than either Bitcoin or Ethereum. We designed the fundamental, mathematical structure of C∆ to complement optimistic consensus. Not only can we reach throughput fit for a global economy, but C∆ makes blockchain technology feasible for fast, secure, every-day transactions, even at the retail point-of-sale. This cuts out the middleman, saving both vendors and consumers cash on every transaction.

Optimistic Consensus

C∆ processes transactions unlike any other blockchain. Instead of processing them as an entire block, it can line-item veto problematic transactions. That means that if a dishonest user gets a transaction into a block, the chain can veto that single transaction while processing the rest of the block. A dishonest user’s transactions take longer to process, but honest users are not harmed by his attacks on the network. Because of this, C∆ saves time and resources where others waste them, and honest users can dependably get their transactions through the blockchain despite the presence of attackers.

Quick Finality

The C∆ blockchain is able to achieve rapid and persistent finality of transactions without the risk of roll-back or chain reorganizations. Unlike proof-of-work systems, even the largest and best-funded attackers can do little more than contribute additional throughput to the network. Moreover, using Casanova’s unique approach to consensus, the C∆ blockchain is able to finalize transactions forever within just a few minutes. For applications that demand improved transaction latency, transactions can be instantly confirmed to a statistical certainty, limiting merchant and consumer risk at the point of sale.

Secure Against Forks

Unlike proof-of-work blockchains, Casanova does not come to consensus by constantly forking and choosing a branch to validate. The structure of consensus makes it so that C∆ never forks. This completely eliminates the threat of long-range attacks, one of the principle problems that have plagued both proof-of-work and proof-of-stake blockchains. C∆ shows that proof-of-stake systems can achieve strictly greater security than their proof-of-work counterparts.

Mathematical Foundations

C∆ is built on world-class, time-tested mathematics. Its consensus mechanism has concrete proofs of both safety and liveness on a minimal, partially synchronous network. The proofs and algorithm design draw from decades of research in consensus on distributed systems. It is optimized to seamlessly handle DDOS, Sybil, and partition attacks in a way that protects honest users and maintains a high quality user experience.