The official blog of the team behind gimbalThe first ZK Rollup dubbed “Orbis” revealed how the solution will allow the network to tackle scaling issues that Hydra won’t be able to address.

ZK Rollups leverages the calculation and verification of transactions to be performed on a specialized off-chain network.

The revealed layer 2 solution is supposed to support higher throughput for DeFi applications, without jeopardizing Cardano’s layer 1 security guarantees.

Orbis design

“We propose Orbis as the best possible scaling solution because it retains all the basic design principles of the Cardano blockchain while having the ability to scale the network until it can host securely. security of large-scale RealFi and DeFi applications”, Explain the protocol in a blog.

As the Cardano dapp ecosystem and user base grows, the number of transactions that can be processed at any given time is tied to scale, otherwise congestion issues will hamper network growth.

ZK Rollups are layer 2 solutions for increased scalability that, in short, consolidate or “roll-up”, a batch of transactions into a single “zero-knowledge” proof.

With Orbis, as with other ZK Rollups, each batch generates a cryptographic proof, a so-called ZK-SNARK which is submitted on-chain to Layer 1 and verified.

ZK-SNARKs stored on the mainnet essentially prove that “for a set of inputs and a set of outputs, there is a set of transactions that have been signed by the relevant parties and have followed the rules of the relevant smart contracts” , explained the blog.

As such, Orbis could significantly increase Cardano’s transaction throughput, since the mainnet only records inputs, outputs, and proof that those outputs result from inputs according to blockchain rules, the team explained. behind the protocol.


Orbis consists of two main components: the off-chain system, or “Prover”, and the so-called “Verifier”, which is essentially an on-chain smart contract.

While Prover will build ZK-SNARK proofs, Verifier will settle transactions on Cardano.

In its initial release, Orbis will launch with a single Prover operated by Orbis Labs, however, there are plans to move to a fully decentralized and distributed stack.

According to the blog, “complete decentralization of the prover means that there is no trusted computer, individual, or entity that is a single point of failure”, and is “an eventual goal and commitment of the project”.

Additionally, Orbis will allow PlutusTx smart contracts to be easily ported and additionally support new programming languages ​​– Pluto and Plutarch – alternatives for on-chain scripting.

Both programming languages ​​”optimize for efficient chain deployment using zero-cost abstractions on Plutus Core.”

By being built using the Halo 2 ZK proof system developed by Electric Coin Co.–Zcash–Orbis supports recursive proofs, essentially allowing the development of application-specific accumulations for specific use cases such as DeFi, NFT, supply chains and micropayments.

“We expect the general user and developer community on Cardano to find a familiar environment on Orbis Layer 2 with more niche applications creating their own bespoke aggregation solutions that remain composable with others. rollups and the underlying Layer 2 Orbis,” the blog concluded, predicting a thriving and interoperable DeFi ecosystem built on Orbis.

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