bacharif / ark-project

Ark Project: A Decentralized Orderbook Protocol with Tools for Creating NFT Marketplaces on Starknet & L3, Developed Using Cairo & Rust

arkproject in 🦀🦀

Overview

Rust libraries and binaries related to the ArkProject.

This library aims at providing the building block and functionalities for the Starknet community in order to work with NFTs.

Architecture

The indexation of NFTs is at the moment a challenge on Starknet due to the standards being in progress.

To propose a flexible and evolutive approach, arkproject provides several crates to modularize the process.

- Pontos

Pontos is an NFT indexer library for Starknet. By defining a core process, Pontos is highly extensible using it's two traits:

StorageManager: This trait exposes all the functions that Pontos uses to access/store data required for the indexation.

EventHandler: During the core process of Pontos, some events may be interesting to be handled by external code, without modifying the core code of Pontos. You can impl this trait to react on each event emitted by Pontos.

- Metadata

Even if the metadata are not at the core of the indexing process, they are vital for any NFT ecosystem. The metadata crate aims at providing basic functions to work with normalized metadata. In the current design, this crate totally separated from the indexation loop as it can be massively optimized elsewhere.

- Starknet

To work, the indexer must interact with Starknet. The starknet crate provides an epurated Starknet provider interface required by indexers and utilitary functions related to Starknet types.

- Solis

Solis is the sequencer that powers the Arkchain, where the decentralized orderbook lives. For now Solis is not decentralizable, but it will be.

Solis is for now based on Katana from Dojo project. To run Solis, cargo run -p solis.

- Diri

Diri is an indexer library for Solis and the Arkchain smart contracts. As Pontos, Diri defines a core logic that can be configured using the two following traits:

StorageManager: This trait exposes all the functions that Diri uses to access/store data required for the indexation.

EventHandler: During the core process of Diri, some events may be interesting to be handled by external code, without modifying the core code of Diri. You can impl this trait to react on each event emitted by Diri.

Features

• Indexer logic for Starknet NFT
• Indexer for arkchain orderbook
• Generic storage for indexer data with SQL-lite
• NFT Metadata manager interface

Quick start

Examples are available in the example folder. They can be run with the following command:

RUST_LOG="ark=trace,storage=trace" cargo run --example diri

To work on a specific package:

cargo build -p <package>

License

Ark Project is licensed under the Apache License.