info_tfgrid/collections/developers/tfchain/introduction.md

ThreeFold Chain

Table of Contents

• Introduction
• Deployed instances
• Create a TFChain twin
• Get your twin ID

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Introduction

ThreeFold blockchain (aka TFChain) serves as a registry for Nodes, Farms, Digital Twins and Smart Contracts. It is the backbone of ZOS and other components.

Deployed instances

• Development network (Devnet):

  • Polkadot UI: https://polkadot.js.org/apps/?rpc=wss%3A%2F%2F/tfchain.dev.grid.tf#/explorer
  • Websocket url: wss://tfchain.dev.grid.tf
  • GraphQL UI: https://graphql.dev.grid.tf/graphql

• QA testing network (QAnet):

  • Polkadot UI: https://polkadot.js.org/apps/?rpc=wss%3A%2F%2F/tfchain.qa.grid.tf#/explorer
  • Websocket url: wss://tfchain.qa.grid.tf
  • GraphQL UI: https://graphql.qa.grid.tf/graphql

• Test network (Testnet):

  • Polkadot UI: https://polkadot.js.org/apps/?rpc=wss%3A%2F%2F/tfchain.test.grid.tf#/explorer
  • Websocket url: wss://tfchain.test.grid.tf
  • GraphQL UI: https://graphql.test.grid.tf/graphql

• Production network (Mainnet):

  • Polkadot UI: https://polkadot.js.org/apps/?rpc=wss%3A%2F%2F/tfchain.grid.tf#/explorer
  • Websocket url: wss://tfchain.grid.tf
  • GraphQL UI: https://graphql.grid.tf/graphql

Create a TFChain twin

A twin is a unique identifier linked to a specific account on a given TFChain network. Actually there are 2 ways to create a twin:

• With the Dashboard
  • a twin is automatically generated while creating a TFChain account
• With the TFConnect app
  • a twin is automatically generated while creating a farm (in this case the twin will be created on mainnet)

Get your twin ID

One can retrieve the twin ID associated to his account going to Developer -> Chain state -> tfgridModule -> twinIdByAccountID().