What is Polkadot (DOT)? All You Need to Know

What is Polkadot (DOT)?

Polkadot is an open-source next-generation blockchain network designed to enable independent blockchains to connect and communicate seamlessly. This interoperability and interconnectivity allow not just tokens, but any data and assets to flow between blockchains without intermediaries. The Polkadot protocol is engineered to facilitate scalability and speed through the use of Parachains—parallel blockchains that reduce processing demands on the main blockchain.

The Polkadot network operates through its native token, DOT, which serves two primary functions: Polkadot governance and Polkadot staking. Since Polkadot utilizes a Proof of Stake consensus mechanism, staking is the process by which the network verifies transactions and issues new DOT tokens as rewards.

Who Founded Polkadot?

The Web3 Foundation, a Swiss foundation, created Polkadot to facilitate the transition to a more user-friendly and effective decentralized web. The foundation collaborates with multiple entities to build the Polkadot network and support the development of applications and projects designed to run on it.

These collaborators include developers from Parity Technologies, researchers from ETH Zurich and Inria Paris, as well as crypto funds like Polychain Capital. Together, they work to realize Web3 with the Polkadot framework at its core.

The founders of the Web3 Foundation that created Polkadot include:

• Robert Habermeier: Co-founder of Polkadot with extensive background in blockchain research and development.
• Dr. Gavin Wood: President of the Web3 Foundation who coined the term “Web3.0.” Dr. Wood invented core blockchain elements including Proof of Authority Consensus, Whisper, and Solidity. At Parity, he leads innovation on Polkadot.
• Peter Czaban: Tech Director of the Web3 Foundation, responsible for supporting the development of next-generation distributed technologies.

How Does Polkadot Work?

Polkadot combines a network of heterogeneous (unrelated) blockchains called parathreads and parachains. These chains connect to and are secured by the Relay Chain, which provides the network’s shared security. Parachains and parathreads can also connect with external networks like Bitcoin and Ethereum through bridges.

Let’s explore the key components that make up how Polkadot works:

Consensus Roles in Polkadot

Various consensus roles are vital to the functioning of the Polkadot protocol:

• Nominators: Protect the Relay Chain by selecting reliable validators for staking DOT rewards.
• Validators: Secure the Relay Chain by validating proofs from collators, engaging in consensus with other validators, and staking DOT tokens.
• Collators: Collect shard transactions from users and create proofs for validators to maintain shards.

Governance Roles in Polkadot

Polkadot has two primary governance roles:

• Technical Committee: Composed of teams actively building Polkadot. They can propose emergency referenda alongside the council for quick voting and implementation.
• Council: Members are elected to represent passive stakeholders in two main governance aspects: vetoing harmful referenda and proposing new referenda.

Polkadot’s Technology Foundation

Several key technologies contribute to Polkadot’s architecture:

• Substrate: The Relay Chain was developed using Substrate, a framework for building blockchains—a distillation of Parity Technologies’ expertise.
• WebAssembly: Polkadot’s state machine is compiled to WebAssembly (Wasm), an enhanced performant virtual environment developed by major tech companies like Microsoft, Apple, Mozilla, and Google.
• Libp2p: This technology powers Polkadot’s networking—a flexible cross-platform framework for peer-to-peer applications that manages peer discovery and communication in the ecosystem.
• Rust, C++, and Golang: Polkadot’s runtime environment is coded in these languages to ensure accessibility to most developers.

Transaction Processing in Polkadot

Polkadot utilizes parachains that enable parallel transaction processing. These special blockchains connect to Polkadot but maintain unique characteristics and manage their own governance. Interactions on these chains are processed in parallel, creating a highly scalable system.

This approach allows transactions to be distributed across various parachains (parallelized transactions), enabling more transactions within the same timeframe. This differs from traditional blockchain transaction processing systems that handle transactions sequentially.

Polkadot’s Security Model

While Proof of Work and Proof of Stake blockchains compete for resources to protect their networks, new blockchains remain vulnerable to attacks until they build sizable supporting communities.

Polkadot takes a revolutionary approach by allowing blockchains to pool their security. This means that all participating blockchains’ security is combined and applied universally. By connecting to Polkadot, new blockchain projects can secure their blockchain from the beginning.

Cross-Chain Communication

For blockchains to interact, they need a common language. Polkadot uses XCM (Cross-Consensus Message format), a cross-consensus communication programming language that allows blockchains of different designs to securely exchange value, code, and data. With XCM, developers can create applications and services that leverage the benefits of multiple independent chains.

Energy Efficiency

Polkadot’s technology prioritizes energy efficiency by using the Nominated Proof of Stake model rather than Proof of Work. This approach consumes only a tiny fraction of the energy used by traditional blockchains, giving Polkadot one of the lowest carbon footprints among blockchain networks.

Polkadot’s Governance System

Every Polkadot update occurs without forking through on-chain voting. DOT token holders participate in governance decisions including proposals, voting, and bonding. Parachains can design custom governance mechanisms, allowing freedom without affecting other chains.

Polkadot’s governance model also includes an on-chain treasury that the community can use to fund beneficial projects. All DOT holders can submit project funding and bounty proposals, and nominate community members for tips.

Consensus Algorithm

Polkadot uses GRANDPA (GHOST-based Recursive Ancestor Deriving Prefix Agreement) consensus to secure the network and enhance resilience. Under normal conditions, GRANDPA can finalize blocks almost instantly. During network partitions, it can finalize large quantities of blocks simultaneously once issues are resolved.

Key Features of Polkadot (DOT)

Polkadot Treasury

The Polkadot Treasury is a collection of DOT tokens gathered through transaction fees and normal network operations. DOT holders can access treasury funds by submitting spending proposals for projects and activities beneficial to the Polkadot network.

Activities eligible for treasury funding include:

• Cross-chain application development (UX improvements and multi-chain infrastructure)
• Marketing activities (paid features, advertising, collaborations)
• Infrastructure deployment and operation
• Network security operations (auditing and monitoring services)
• Community events and outreach (meetups)
• Collaborations with Polkadot-friendly chains
• Academic and non-academic research
• Software development (wallet integrations, clients, client upgrades)

The treasury contains tens of millions of DOT tokens used to fuel Web3 innovation. Funds are allocated through on-chain governance in three ways: bounties, proposals, and tips. The Polkadot council approves treasury allocations.

Cross-Consensus Message (XCM)

XCM is both a programming language and cross-chain consensus communication format enabling different blockchains to exchange data, value, and code securely. As Web3’s native language for building cross-chain applications and services, Polkadot created XCM to enable secure messaging across Polkadot-native blockchains and with external networks through bridges.

XCM enables applications to span across different blockchains, accessing the strengths and features of each for new interoperable use cases. Currently, XCM connects over 450 projects.

The language provides instructions for composing, sending, and interpreting cross-chain messages containing various data types like instructions and assets. When a destination chain receives XCM instructions, it executes the message.

XCM messages travel over different channels and routes:

• Messages between parachains and the Relay Chain are sent via VMP channels
• Messages between external blockchain networks and Polkadot, or between two solo chains outside Polkadot, are sent over Bridges

Beyond message passing, XCM enables:

• Batched transactions
• Reserve-backed assets
• NFT staking
• Cross-chain token and NFT transfers
• Multi-chain DAOs and treasuries
• On-chain scheduling
• Cross-chain reputation systems
• Multi-chain dApps
• Smart contracts
• DeFi applications

XCM brings external tokens into Polkadot and allows users to pay fees between chains in any native tokens. It also works between smart contracts over bridges and on different virtual machines between Substrate pallets, connecting networks built on different consensus mechanisms—including between proof-of-stake and proof-of-work networks.

Weaknesses of Polkadot (DOT)

A major weakness of Polkadot is the uncertainty surrounding DOT token distribution. As a relatively new network, it lacks a comprehensive DOT-rich list and limited information exists about where and who owns DOT tokens.

Polkadot has also been targeted by hackers exploiting code vulnerabilities. In July 2017, hackers identifying themselves as the White Hat Group exploited a software flaw to breach the team’s wallet, stealing $33 million. In August 2022, Polkadot’s DeFi Acala network was hacked, with malicious actors minting over 1.2 billion in USD.

Another limitation is that only a limited number of parachain slots are available. These slots are sold through auctions, which can price out smaller use cases due to the competitive process.

Despite DOT often trading among the top 20 digital currencies on CoinMarketCap, its May 2020 release makes it relatively new compared to established competitors in the general-purpose smart contract and Proof-of-Stake sector like Cosmos, Ethereum, and Cardano. DOT currently cannot provide substantial liquidity and lacks the infrastructure to do so.

How is Polkadot (DOT) Created?

New Polkadot (DOT) tokens are released (minted) as rewards for staking DOT tokens. Polkadot uses the Nominated Proof of Stake model, incentivizing staking by rewarding newly minted DOT based on how many tokens the delegator has staked.

Mining Polkadot (DOT)

You cannot mine Polkadot (DOT) as it isn’t a Proof of Work token. Instead, you receive benefits similar to mining rewards by staking your DOT tokens, as Polkadot operates on a Nominated Proof of Stake chain.

The Polkadot network has four consensus roles—validators, nominators, collators, and fishermen—each receiving staking rewards for their activities in securing the network.

The average staking reward for DOT ranges from 10% to 15% per annum. However, actual rewards depend on stake pool performance, staked amount, supply, demand, and network changes. Profits are determined by how many DOT tokens you stake to earn future rewards.

Which Blockchain does Polkadot (DOT) Use?

DOT is native to Polkadot’s core blockchain called the Relay Chain. Beyond the Relay Chain, Polkadot supports user-developed parallel chains called parachains.

How to Use Polkadot (DOT)?

DOT is Polkadot’s native token with several key uses:

• Governance participation: DOT holders can vote on protocol decisions and proposals by staking their tokens
• Network direction: DOT holders help determine Polkadot’s future, including decisions about network upgrades
• Parachain addition: Through a process called Bonding, DOT can be locked for a period to add new parachains (released back to the original account when the parachain is removed)
• Consensus mechanism: DOT holders facilitate consensus by delegating tokens to perform chain functions, enabling the network to process transactions across parachains
• Network security: DOT discourages harmful activities, as holders engaging in malicious behavior risk forfeiting their stake

How to Buy Polkadot (DOT)?

DOT tokens can be purchased on exchanges like Binance, PolkaSwap, Kraken, 1INCH, and Coinbase. CoinMarketCap maintains a comprehensive list of all exchanges supporting DOT trading.

To purchase DOT:

1. Find a suitable exchange and create an account
2. Complete the verification process
3. Fund your wallet with fiat currency via debit card or bank transfer
4. Buy DOT tokens on the exchange

How to Store Polkadot (DOT)?

You can store DOT tokens in a wallet on the exchange where you purchased them or transfer them to an external wallet. Options include:

• Software Wallets (hot wallets): Internet-connected wallets suitable for regular traders despite security concerns. Metamask wallet, Guarda Wallet, and Coinbase wallet support DOT storage.
• Hardware Wallets (cold wallets): The most secure option for long-term storage and large holdings. DOT can be stored on devices like Ledger Nano X, Trezor Model T, SafePal S1, and Ellipal Titan.
• Exchange Wallets: Built-in wallets on crypto exchanges that support DOT trading. These are generally considered the least secure storage option.

Best Places to Stake Polkadot (DOT)

Several excellent options exist for staking DOT tokens, with the Polkadot community preferring Kraken, Binance, and Polkadot.js.org. For beginners, it’s advisable to stake DOT on an exchange rather than advanced platforms like Polkadot.js.

What You Need to Know About the Future of Polkadot (DOT)

Various post-launch upgrades to Polkadot remain under development, including:

• Release of Polkadot’s cross-communication standard (XCM)
• Governance improvements
• Launch of parathreads
• Upgrades to XCMP, the cross-chain message passing protocol

These enhancements will bring Polkadot closer to achieving its Web3.0 objectives.

Conclusion: Should You Invest in Polkadot (DOT)?

Polkadot is still in its early stages. If you have a high risk tolerance, an investment could potentially pay off in the long run. However, the project could also falter if more innovative technologies emerge to challenge Polkadot’s position.

Risks of Investing in Polkadot (DOT)

As with any cryptocurrency, price volatility presents a significant risk when investing in Polkadot. You could lose your entire investment if DOT loses its value. There’s also the possibility of the project ceasing operations, as has happened with other crypto projects. Ensure you have high-risk tolerance and only invest money you’re prepared to lose.