中文简介

CovenantSQL is a decentralized, crowdsourcing SQL database on blockchain with features:

• SQL: most SQL-92 support.
• Decentralize: decentralize with our consensus algorithm DH-RPC & Kayak.
• Privacy: access with granted permission and Encryption Pass.
• Immutable: query history in CovenantSQL is immutable and trackable.

We believe On the next Internet, everyone should have a complete Data Rights

One Line Makes Data on Blockchain

sql.Open("CovenantSQL", dbURI)

• Layer 1: Global Consensus Layer (the main chain, the middle ring in the architecture diagram):
  • There will only be one main chain throughout the network.
  • Mainly responsible for database Miner and the user’s contract matching, transaction settlement, anti-cheating, shard chain lock hash and other global consensus matters.
• Layer 2: SQL Consensus Layer (shard chain, rings on both sides):
  • Each database will have its own separate shard chain.
  • Mainly responsible for: the signature, delivery and consistency of the various Transactions of the database. The data history of the permanent traceability is mainly implemented here, and the hash lock is performed in the main chain.
• Layer 3: Datastore Layer (database engine with SQL-92 support):
  • Each Database has its own independent distributed engine.
  • Mainly responsible for: database storage & encryption, query processing & signature, efficient indexing.

Papers

Our team members published:

• Thunder crystal: a novel crowdsourcing-based content distribution platform
• Analyzing streaming performance in crowdsourcing-based video service systems
• Performance Analysis of Thunder Crystal: A Crowdsourcing-Based Video Distribution Platform

that inspired us:

• Bitcoin: A Peer-to-Peer Electronic Cash System
• S/Kademlia
  • S/Kademlia: A practicable approach towards secure key-based routing
• vSQL: Verifying arbitrary SQL queries over dynamic outsourced databases

Libs

Network Stack

DH-RPC := TLS - Cert + DHT

Layer	Implementation
RPC	net/rpc
Naming	Consistent Secure DHT
Pooling	Session Pool
Multiplex	smux
Transport Security	Enhanced TLS
Network	TCP or KCP for optional later

Test Tools

• Global Network Topology Emulator is used for network emulating.
• Liner Consistency Test

Connector

CovenantSQL is still under construction and Testnet is already released, have a try.

• Golang
• Java
• NodeJS
• Python
• Coding for more……

Watch us or for updates.

TestNet

• Quick Start

Contact

• mail us

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