Technical stack: Rust, Substrate, Polkadot

Substrate-based blockchain with delegated proof of stake consensus mechansim. 

The DPoS pallet implements a governance mechanism where stakeholders can elect a set of validators to secure the network. Token holders delegate their stake to validators, who then participate in the block production process. 

This pallet includes functionality for delegating stake, selecting validators, and handling rewards and penalties.

Technical stack: Rust, Substrate, Polkadot

Rust implementation of the @polkadot-js/api

Technical stack: Rust, Substrate, Polkadot

Updated version of the original Substrate Kitties workshop (using Substrate v3.0.0). Find the original tutorial here: https://www.shawntabrizi.com/substrate-collectables-workshop/#/ 

Technical stack: Rust, Substrate, Polkadot

Substrate course to guide how to build a nominated proof of stake substrate-based blockchain

Technical stack: Rust, Tokio, Redis, Postgres, Rayon

Technical stack: Rust, Gremlin, RocksDB, Redb, Tokio (in development)

An embedded and distributed Gremlin-compatible graph database written in Rust. SolomonDB can be used as a layer to config embedded storage as a graph database using GQL (Gremlin query language). Apache TinkerPop is not required to traverse graphs, all can be operated directly and rapidly on disk or in memory.

Technical stack: Rust, TUI, RocksDB, Redb, TiKV

EDMA or Embedded Database Management for All is an interactive database management tool specified for embedded databases. It supports multiple storage engine like RocksDB or TiKV. Integrate with EDMA is easy as it is open source and it follows Adapter pattern for storage engines. EDMA is a terminal app so it is light weight and compatible with every operating system.

Technical stack: Solana, Blockchain, Rust, Typescript, NodeJS, Aptos, Move, AWS DynamoDB, AWS Lambda, AWS Cloudwatch, NestJS

Snowflake is a Solana startup offers multisig solution and reliable on-chain automation platform. About products:

• Snowflake Safe is the most trusted, institutional-grade multisig wallet & on-chain automation built for teams, DAOs, & secured individuals

• Snowflake Automation is an automation platform, a Web3 Zapier. Empowers recurring payment and on-chain scheduler.

Technical stack: Lightning Network, Typescript, NodeJS, GraphQL, TypeGraphQL, Docker, Microservice, Apollo Server, Ethereum

Neutronpay was founded by long time bitcoin and payments professionals with the idea anyone with the ambition and ability to offer a product or service should be able to engage with the global market with an internet connection. With the rise of bitcoin and cryptocurrencies, businesses now have a faster and safer way to accept and send payments than ever before.

• Design database schema, implement scalable back-end microservice system and container orchestration, powering Bitccoin transaction via lightning channel

• Secure functionalities of lightning network daemon and architect the serverless back-end service with cloud function

• Design and build novel systems designed to help nodes/users acquire and manage liquidity on the Lightning Network

Technical stack: Ethereum, Metamask, Solidity, React, Typescript, SCSS, Truffle.js

OBAY development team recognized the big flaw of the traditional fund management system is the process of ambiguous transferring funds process and lack of transparency in portfolio management. Therefore, the target communities OBAY aims at are the ventures, the group of investors (scaling from low to high), small-cap fund and large-cap fund, and the crowdfunding partners

Technical stack: Dart, Typescript, GraphQL, Flutter, WebRTC, NestJS

Ramen is a TikTok like application written in Dart and Typescript as backend programming language. Using WebRTC with configured TURN/STUN server for network handshaking.

What I learn from this project?

• Building matchmaking algorithm running on NestJS server

• Fundamentally implement STUN/TURN server with Coturn

• Generating self-signed SSL certificate with openssl

• Architecting Flutter with Bloc pattern

Technical stack: Pixi.js, Javascript, Browserify, Webpack

DriveX is the university coursework developed to track the behavior of Uber drivers and customers. Moreover, optimizing the performance of an existing simulator with a better user interface, analytics dashboard and shortest pathfinding algorithm.

• Simulate the pickup process with Pixi.js

• Visualize with realtime Javascript chart making library.

• Cluster traffic density with DBSCAN.

• Apply the concept of finite state machine to manage objects’ states

• Using Dijkstra’s algorithm for shortest path finding.