Patract Labs provides full-stack support for the Wasm contract ecosystem, including on-chain contract modules, off-chain tools and services, and user-side products.



Jupiter is a series of common good testnets developed and maintained by Patract, including PoA fast independent chains and Rococo parachains. It integrates different versions of contract models, contract languages, resource models, contract governance, cross-chain standards, and runtime support.

Community parachains can develop custom requirements based on Jupiter, and take advantage of the amplification effect of the Wasm contract platform to better utilize its advantages in storage, privacy, messaging, and product operations. Community DApp developers can conduct early contract development and testing based on Jupiter, and then deploy to any parachain that supports Wasm contracts.

Resource model

Jupiter will first deploy the existing resource model for computing gas costs and storage rent developed by Parity, and at the same time collect community opinions and feedbacks, and work with Parity to improve this resource model.

Contract standards

Jupiter will work with the community to define a set of protocol on fees, upgrades, migration and destruction, and formulate upper-level business standards similar to ERC20 to promote collaboration among multiple participants in the industry.

Runtime support

Jupiter will provide support for pallets such as zero-knowledge, random numbers, domain name system, IPFS, bridge, and cross-chain messaging at the Runtime level to adapt to the differences in the Runtime environment of different parachains.

On-chain Contract Technology

Off-chain Development Tools


Contract development workflow and scaffold. Redspot can standardize contract development, shield the underlying compilation details, and connect to other tools as a core component of Patract.


Contract running sandbox environment. Europa is an independent and complete running environment for Runtime that includes Contracts Pallet. It does not require consensus and P2P, so can quickly develop and debug contracts.


Zero-knowledge proof support. zkMega provides on-chain runtime support for multiple cryptographic curves and off-chain development tools to facilitate the development of zero-knowledge contracts.


Multi-language contract SDK. Himalia supports developers to interact with contracts in multiple development languages from different clients, including: PatractGo, PatractPy, PatractJ, PatractN etc

Off-chain Development Services

User-side Products


DApp store framework. Multi-chain account management and DApp convenient interactive system, supporting the community to carry out secondary development and independent operation. Patract only connect with Jupiter, without other mainnets.


Contract chain browser. A blockchain browser that contains basic functions of parachains and analysis of Wasm contract modules. Parascan will actively connect the testnets and mainnets in our open platform.


2020 Q3Aug 14

Found Patract, and submit the Polkadot Treasury’s No. 0 Proposal to start the Redspot project.


Start the Jupiter project, release Redspot v0.1, and announce the Overall Dev Plan for the future 10 projects.

2020 Q4Oct

Start Europa and Elara projects, release Elara v0.1.


Start zkMega and Metis project, release Redspot v0.2 and Europa v0.1.


Start Himalia and Ask! projects, release Redspot v0.2 and Europa v0.1.

2021 Q1Jan

Start Store project, release Europa v0.2, PatractGo and PatractPy from Himalia.


Elected as a Kusama Councillor, start Parascan project and released Ask! v0.1.


Elected as a Polkadot Councillor, release Store v0.1 and 6 example Wasm DApps.

Launch the Wasm Contract Open Platform to promote the Wasm contract ecosystem with Parity, community parachains and DApp projects.

Start the contract model customization plan, and start the development of Patracts Pallet for Jupiter based on Parity's Contracts Pallet.

2021 Q2Apr

Release Parascan v0.1, start contract standard definition plan, start Metis project.


Release Ask! v0.2, Europa v0.3 and Redspot v0.4, start Leda project.


Release Patracts Pallet v0.1 and Metis v0.1, start a large-scale test plan for Jupiter, start Carpo project.

2021 Q3

Release Metis v0.1, Leda v0.1 and Carpo v0.1.

Make Jupiter to production level.

Collaborate with Parity and community parachains to promote the release of the community mainnet integrated with Wasm contract functions.

2021 Q4

Collaborate with more community parachains to promote the customization of contract models.