Chainlink Developers

Welcome to the Chainlink documentation site. You'll find comprehensive guides and documentation to help you start working with Chainlink as quickly as possible, as well as support if you get stuck. Click here for an introductory walkthrough on how to create a Chainlink request on the Ropsten test network!

Building on Chainlink? Click here to get started!

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Polkadot and Substrate Resources

Polkadot and Substrate Resources

Welcome to Polkadot and Substrate! The following sections list a few of the most important and useful resources that you might need to successfully develop at the intersection between Polkadot, Substrate and ChainLink.

What is Polkadot?

Polkadot is a sharded, multichain network founded by Dr. Gavin Wood, the co-founder and former chief technology officer of Ethereum and creator of the Solidity programming language. The Polkadot network is a metaprotocol that solves many challenges that have hindered the growth of legacy blockchains, including scalability, governance, security, and interoperability. Polkadot is a blockchain network fostered by the Web3 Foundation and built by industry-leading developers at Parity Technologies.

What is Substrate?

Blockchains in the Polkadot ecosystem are built using Substrate. Substrate is a blockchain development framework with a completely generic state transition function and modular components for consensus, networking, and configuration. Despite being "completely generic", it comes with both standards and conventions, particularly with the Substrate runtime module library (FRAME). FRAME makes rapid development of purpose-built blockchains a reality by providing developers with a flexible library of carefully designed blockchain building blocks. Cumulus (under development), a tool for easily connecting your blockchain to a network of blockchains, unlocks interchain communication, collaboration and shared security on the Polkadot network.

Polkadot resource

Polkadot wiki

Network information (Telemetry)

JavaScript utilities and libraries (Polkadot.js)

Polkascan blockchain data explorer and analytics

Polkawallet - Mobile wallet

Polkadot and Kusama Github

VueJS-based starter kit for Substrate-based chains

Substrate resource

Substrate Knowledge Base


Substrate Recipes (working code examples)

Node template

Front-end template

Rust documentation

Substrate GitHub

Web-based VS Code like IDE

Stack Overflow

Polkadot x Chainlink x Substrate

Integration Github

Video resource

Web3 Foundation Technical Education Youtube explainers

Parity Technologies YouTube channel

Intro to Substrate codebase and FRAME pallet

Substrate Seminar playlist from weekly tutorial calls

Substrate tutorial videos

Polkadot Technical Explainers

Useful FRAME Pallets

Multi-Signature Pallet

Proxy Pallet

Identity Pallet

Utility Pallet

Weekly office hours will be held during Parity’s Substrate Seminar live call, every Tuesday 2:00 - 3.30pm UTC. Sign up here:

Social channels


Polkadot homepage



Polkadot Watercooler Chat on Riot/Element


Join the Kusama & Polkadot Ambassador Program

Riot Validator Chat

Dot Leap Newsletter (community-led)

Interested in building in the Polkadot ecosystem? Talk to our team.


Substrate Technical Chat on Riot/Element

Substrate Tag on StackOverflow



Substrate newsletter

Substrate Seminar weekly live call

The best place for highly technical long-form questions is Stack Overflow. Please make use of the following tags: substrate, ink, parity-io, rust

Ecosystem Newsletters

Polkadot Newsletter

Parity Newsletter

Updated 4 months ago

Polkadot and Substrate Resources

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