ThreeFold Chain

Table of Contents

- [Introduction](#introduction) - [Deployed instances](#deployed-instances) - [Create a TFChain twin](#create-a-tfchain-twin) - [Get your twin ID](#get-your-twin-id) *** ## Introduction ThreeFold blockchain (aka TFChain) serves as a registry for Nodes, Farms, Digital Twins and Smart Contracts. It is the backbone of [ZOS](https://github.com/threefoldtech/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](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](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](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](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](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](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](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](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](../../dashboard/wallet_connector.md) - 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()`. ![service_contract_twin_from_account](img/service_contract_twin_from_account.png)