Simple, accurate answers to common questions about Polkadot, backed by extensive references and source material, empowering anyone to become a Polkadot ambassador.
- Polkadot is a cloud server for Web3 applications and services.1
- Polkadot scales through data and execution sharding, allowing for parallelized throughput.2
- Polkadot provides shared security and secure interoperability to services built on it.3
- Polkadot creates abundant, flexible, and high quality blockspace.4
- Polkadot uses a novel "cynical" rollup to provide fast finality while using minimal resources.5
- Build applications with full control over block construction and transaction execution.6
- Build applications with full control over fees, fee payments, and tokens.7
- Build applications which dynamically scale up and down execution cores.8
- Build applications which execute at sub-second speeds.9
- Build applications that can permissionlessly upgrade and evolve over time.10
- Billions of dollars of economic security provided to itself and applications running on it.11
- Fast finalization times, on average under 30 seconds.12
- Executing and scaling on standard "gaming" hardware.13
- Polkadot SDK is the most robust and flexible blockchain framework.14
- Secure cross-chain interoperability through trustless bridging protocols.15
- 50+ active rollups live on Polkadot driving 32M transactions across 200K active accounts per month.16
- Among the highest Nakamoto coefficients in the blockchain ecosystem.17
- One of the largest developer community after Ethereum.18
- Blazing fast execution speeds compared to other blockchain VMs.19
- One of the largest functioning DAOs, managing the functionality of the network and $150M dollars in assets for development.20
- Ethereum: Polkadot realized Ethereum's scaling vision first, conceived and delivered by co-founder Dr. Gavin Wood.21
- Solana: Unlike Solana, Polkadot scales without compromising Web3 principles of decentralization and security.22
- Cosmos: Unlike Cosmos, Polkadot provides shared security and secure interoperability.23
- Avalanche: Subnets in Avalanche are not as flexible as applications on Polkadot, and subnets do not provide shared security or secure interoperability.24
- Layer 2s: Layer 2 solutions face performance issues, unpredictable fees, and fragmented interoperability due to non-native support for rollups.25
Footnotes
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Learn more about Web3:
- The first time the term "Web3" was used: https://gavwood.com/dappsweb3.html
- A blog post describing the importance of Web3: https://gavofyork.medium.com/why-we-need-web-3-0-5da4f2bf95ab
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Explanation of sharding on Polkadot: https://polkadot.com/blog/polkadot-v1-0-sharding-and-economic-security ↩
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A high level overview of shared security: https://www.youtube.com/watch?v=uKQOSPfM-W0 ↩
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A blog post explaining the term "blockspace": https://www.rob.tech/blog/polkadot-blockspace-over-blockchains/ ↩
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Polkadot's cynical rollup protocol is called ELVES.
- ELVES stands for ”endorsing light validity evaluator system”.
- The ELVES paper, formally describing Polkadot's cynical rollup: https://eprint.iacr.org/2024/961
- A tweet summary of the ELVES paper: https://x.com/rphmeier/status/1807884271157187007
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For example:
- Build applications more resilient to MEV.
- Build applications which can prioritize certain tasks and processes.
- Build applications which only execute when it is economical to do so.
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For example:
- Build applications where end-users pay no transaction fees.
- Build applications which can accept fees paid in any token.
- Build applications where users need not hold DOT or your native token to hold other tokens.
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Learn more about Agile Coretime:
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A demo of a Polkadot SDK blockchain producing blocks every .5 seconds: https://twitter.com/bkchr/status/1818027282688352591 ↩
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Learn about forkless runtime upgrades in Polkadot: https://wiki.polkadot.network/docs/learn-runtime-upgrades ↩
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Polkadot's economic security can be measured by multiplying the total market cap of the DOT token by the percentage of DOT token locked in Polkadot's Nominated Proof-of-Stake protocol.
- Staking metrics can be found here: https://data.parity.io/staking
- Total market cap information can be found here: https://www.coingecko.com/en/coins/polkadot
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Learn more about cynical rollups:
- Compare that to optimistic rollups which may take up to a week to finalize!
- Cynical rollups actively check that a block is valid, rather than waiting for someone to report it is invalid. See ELVES paper footnote above.
- Compared to "instant finality" consensus, block production is separated from finality, reducing network stalls: https://polkadot.com/blog/polkadot-consensus-part-1-introduction
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Compared to expensive and centralized machines needed for vertical scaling or ZK provers.
- Hardware requirements for running a Polkadot Validator: https://wiki.polkadot.network/docs/maintain-guides-how-to-validate-polkadot#requirements
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Polkadot SDK is used throughout the entire blockchain ecosystem:
- Polkadot and Kusama are built with the Polkadot SDK.
- All 50+ live parachains, and many more in development, all use Polkadot SDK.
- Many projects outside of Polkadot also use the Polkadot SDK: Avail, Cardano, Entropy, and more...
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Bridging in Polkadot can be broken down into internal bridges and external bridges:
- Native bridging protocol for applications secured by Polkadot: https://wiki.polkadot.network/docs/learn-xcm-transport
- An overview of external bridges on Polkadot: https://polkadot.com/blog/the-landscape-of-trustless-bridges-on-polkadot
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A list of active parachains on Polkadot: https://polkadot.subscan.io/parachain
- Accumulated insights of total activity on Polkadot: https://data.parity.io/parachain-stats
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The Nakamoto Coefficient is one measure of decentralization and resilience.
- A third party service comparing the Nakamoto Coefficient: https://nakaflow.io/
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Graph of blockchain developer ecosystems: https://twitter.com/Polkadot/status/1577016988697706496
- The raw data is being generated using this open source repo: https://github.com/electric-capital/crypto-ecosystems
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PVM and other VM benchmarks: https://github.com/koute/polkavm/blob/master/BENCHMARKS.md ↩
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Information about the Polkadot DAO:
- High level overview of the DAO: https://polkadot.com/platform/dao
- Insight into the treasury activity controlled by the DAO: https://www.dotreasury.com
- Polkadot Treasury Account: https://polkadot.subscan.io/account/13UVJyLnbVp9RBZYFwFGyDvVd1y27Tt8tkntv6Q7JVPhFsTB
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Polkadot comparison document to Ethereum:
- https://wiki.polkadot.network/docs/learn-comparisons-ethereum-2
- Ethereum abandoned a properly sharded approach due to its complexity.
- Ethereum now depends on layer 2 solutions that are fragmented, less secure, and less decentralized.
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Solana is better described as a distributed database, than a Web3 product.
- Information about the scalability trilemma: https://ethereum.org/en/roadmap/vision/
- Solana scales vertically while Polkadot scales horizontally.
- Since January 2022, Solana has seen around half a dozen significant outages and 15 partial or major outage days: https://cointelegraph.com/news/solana-outage-client-diversity-beta
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Polkadot comparison document to Cosmos:
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Polkadot comparison document to Avalanche:
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Polkadot comparison document to Layer 2s and Rollups:
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