Polkadot (DOT) DOT

Polkadot is a crypto network on which many blockchains run side by side and share one pool of security, supplied by validators who stake DOT. DOT is the native token. It pays for fees and blockspace, backs those validators and gives every holder a vote on changes to the protocol.

Ask what Polkadot is in October 2026 and the honest answer is a project in the middle of a rebuild. Between November 2025 and July 2026 it moved balances and staking to a hub chain, switched on Ethereum-style smart contracts, cut new issuance by more than half under a 2.1 billion DOT cap and shortened the wait to unstake from 28 days to about two. Over the same months its first generation of parachains thinned out, Moonbeam among them. JAM, the next big upgrade, has no launch date.

What is Polkadot crypto: one base layer, many chains

CoinGecko files Polkadot under layer 0, the name for a base network that other blockchains plug into. At the centre sits the Relay Chain. It runs almost no applications of its own. Its job is consensus and security: its validators check and finalise the blocks of every chain connected to it.

Those connected chains were long called parachains. Each sets its own rules, token and fees, but none has to recruit a validator set. They borrow the Relay Chain's validators instead, a model Polkadot calls shared security, so a two-person team launching a chain is guarded by the same validators as the largest project on the network. Gavin Wood's 2016 whitepaper described the design as a heterogeneous multi-chain.

The toolkit behind Polkadot, Substrate, is also used by chains that live outside it. Bittensor, the decentralised AI network, won Polkadot parachain auction 36, with a lease from February 2023 to December 2024 according to The Block Research, yet it runs its own Substrate chain, Finney, and does not rely on Polkadot validators.

Validators, nominators and NPoS

Security rests on Nominated Proof of Stake, or NPoS, Polkadot's version of proof of stake. Validators produce blocks, check the blocks that connected chains submit and take part in finality. Nominators run no servers. They back validators they trust with their DOT and share in the rewards. Until July 2026 they also shared the losses when a validator was slashed; that rule is gone, as the staking section below explains.

Rewards are counted per era, and a Polkadot era lasts 24 hours.

Kusama went public on 16 July 2019, described by The Block at the time as an early, unaudited release of Polkadot. It runs the same code with its own token, KSM, and faster settings, such as six-hour eras. Upgrades usually reach it first: runtime 2.1.0 landed on Kusama around 17 March 2026, roughly a week before Polkadot moved to 2.1.1.

XCM: the language between chains

Chains exchange tokens and instructions through XCM, short for cross-consensus messaging. Most users never see it. Links to networks outside Polkadot go through cross-chain bridges instead. Parity's review of 2025 says Snowbridge 2, the bridge to Ethereum, went live in November 2025 and halved transfer times between the two networks.

Coretime replaced the parachain auctions

Until 2024 a project had to win a slot auction to join, locking DOT for a lease of up to two years, often gathered from supporters through crowdloans. Agile Coretime ended that system on 19 September 2024, the day Parity announced it had gone live. Existing slots became legacy leases that run to their original end date.

Blockspace is now rented. Bulk coretime comes in periods of 28 days, sold as NFTs and paid in DOT. A buyer can split or resell a period, and a chain that keeps one core assigned to itself gets a price-capped renewal. On-demand coretime is paid in DOT per block, for chains that need capacity only now and then.

Polkadot Hub and Asset Hub

The official Polkadot Hub documentation calls the Hub the entry point for users and app developers. From it people hold DOT, stake, vote, issue tokens and deploy Ethereum-compatible contracts without running a chain. Parity stresses that the Hub is a set of system chains, not one parachain. Asset Hub, the main one, keeps balances, staking and assets, and hosts the smart contract engine.

On 4 November 2025, between 07:03 and 15:43 UTC, balances and staking left the Relay Chain for Asset Hub. The migration report on the Polkadot forum counts 1,526,324 accounts holding about 1.63 billion DOT, including 53,407 stakers with about 903.7 million DOT at stake.

Polkadot 2.0: what is live, and JAM, which is not

Polkadot 2.0 is a label for a run of upgrades rather than one launch day. These are running on the main network:

• Async backing, approved in referendum 688, lets parachains opt in to 6-second blocks instead of 12 seconds. It reached Polkadot in 2024 after trials on the Rococo and Westend test networks.
• Agile Coretime has been live since 19 September 2024.
• Parity declared elastic scaling complete and open to parachain teams on 24 October 2025.
• The Asset Hub migration took place on 4 November 2025, and Snowbridge 2 followed that month.
• Smart contracts arrived through Revive, added to Polkadot's Asset Hub with an enactment set for 27 January 2026, the day the release was announced on the forum.

Revive runs two engines: an EVM for Ethereum compatibility and tools such as MetaMask and Hardhat, and PVM, a RISC-V engine that accepts Solidity or Rust. The announcement calls it an initial release focused on correctness, with performance and tooling to come.

JAM, the Join-Accumulate Machine, is the gap. Its specification, the Gray Paper, is public. As of October 2026 it is not live on mainnet, and no official source gives a date. On 4 October 2026 the team behind MiniJAM, a parachain project running a slimmed-down JAM, wrote on the Polkadot forum that "the JAM release timeline has changed" and abandoned its plan to keep running as a parachain.

Polkadot history: from the 2017 token sale to the 2026 rebuild

Gavin Wood came to Polkadot from Ethereum. He co-founded it, became the Ethereum Foundation's first CTO and in 2014 wrote the paper that defines the Ethereum Virtual Machine, the year he also coined the term Web3. He left the foundation in January 2016, the year he published the Polkadot whitepaper. He had founded Parity Technologies, the company that built much of Polkadot's software, with Jutta Steiner in 2015. The Web3 Foundation, a non-profit in Zug, Switzerland, followed in 2017.

The October 2017 token sale raised more than $140 million by 17 October, TechCrunch reported. On 6 November 2017 a flaw in Parity's multisig wallet library froze every wallet built on it after 20 July 2017, at least 600,000 ether by an early estimate. Polkadot confirmed its own wallets were among them, and TechCrunch understood that about 60% of the sale proceeds were potentially affected.

Mainnet went live in late May 2020 as a proof-of-authority network run by the Web3 Foundation, which held an admin key known as sudo. NPoS took over in June. A governance vote removed sudo, enacted at about 08:00 UTC on 21 July 2020, according to Cointelegraph.

Transfers were switched on in mid-August 2020, and 72 hours later, on 21 August, the token was redenominated. Each old DOT became 100 new ones; nothing changed in what holders owned. They had picked the 100-fold option themselves, with 86% of the votes cast in a two-week poll.

Parachains arrived at the end of 2021. Acala won the first slot auction in November and Moonbeam the second, each with crowdloans of more than 30 million DOT. The first five winners, Acala, Moonbeam, Astar, Parallel Finance and Clover, began their 96-week leases on 17 December 2021, backed by close to 100 million DOT locked in crowdloans, according to K33.

Governance changed in mid-June 2023, when referendum 121 passed with 99% of votes and brought in OpenGov. It replaced the Council and the Technical Committee with referendums any holder can start. That October, Bloomberg reported that Parity had cut about 30% of its staff, around 100 people, mostly in marketing and business development.

DOT supply: the 2.1 billion cap and stepped issuance

For most of its life DOT had no maximum supply. The network minted about 120 million new DOT a year, with no end date.

Referendum 1710, titled Hard Pressure Capped and Stepped Supply Schedule, changed that. It passed with 81.1% of votes in favour, and the Polkadot DAO announced the result on Sunday 14 September 2025. Two softer schedules, referendums 1709 and 1718, lost out.

Supply is now capped at 2.1 billion DOT. Every two years the protocol issues 13.14% of what is left below the cap, so each two-year step is smaller than the one before. The first came on 14 March 2026, Pi Day, with an immediate 53.6% cut: annual issuance fell from about 120 million to about 55 million DOT, according to the Polkadot forum. Parity says that rate holds for two years, which puts the next step in March 2028.

The 2040 projection is the Polkadot DAO's own, quoted by The Block. Referendum 1710 also asks for the schedule to be written into JAM once it ships.

A second change decides where new DOT goes. Referendum 1827, a non-binding Wish For Change vote approved on 28 January 2026, set up phase 1 of the Dynamic Allocation Pool (DAP). It took effect with runtime 2.1.1, live on Polkadot on 23 March 2026. Treasury burns and fee burns stopped. New issuance, transaction fees, coretime sales and slashed stakes now flow into the DAP, and governance splits that pool into budgets for validators, nominators, the treasury and a reserve.

A cap does not freeze the supply. New DOT keeps arriving every two years until 2160, in shrinking amounts, and token holders vote on who receives it.

DOT staking in 2026: two-day unbonding, no nominator slashing

Four referendums rewrote staking in 2026. The first, referendum 1872, set a 10% minimum validator commission on 1 April. It did not last. Referendum 1909 later cut commission to 0% and split the DAP budget three ways: 45.2% for staker rewards, 22.6% for an incentive tied to validators' own stake and 32.2% held back as a buffer.

Referendum 1890 requires every validator to put up at least 10,000 DOT of its own. A forum reply says the minimum came into force on 30 June 2026, more than three months after it was first expected.

Holders feel referendum 1910 most. It was enacted on 6 July 2026, the Polkadot forum announced, and it does two things: nominators can no longer be slashed, and unbonding takes about two days, or two eras, instead of 28. The forum post on the staking update adds two limits. The short period applies only to unbonding requests made after the upgrade, and validators can still be slashed. Some wallets and wiki pages kept showing 28 days for a while, so check what yours displays.

Solo nominators pick validators themselves, and the minimum active bond is dynamic, so the Polkadot Staking Dashboard is the place to check it. Nomination pools let small holders join with far less. Exchanges such as Kraken stake for customers where local rules allow, and Bifrost offers liquid staking. Our explainer on how crypto staking works covers the basics.

OpenGov and the treasury

Under OpenGov, any DOT holder can propose or vote on a referendum. Turnout is thin. On Subsquare, referendums 1909 and 1910 drew support equal to about 7.4% and 6.7% of total issuance, and the supply cap itself only 0.68%. A small share of holders sets the budgets and the rules.

Spending has tightened. The treasury report for the fourth quarter of 2025, published on 27 January 2026, counted 2.6 million DOT ($7.4 million) spent, the lowest quarterly figure since OpenGov began. It also showed a positive income statement for the first time under the new system.

What DOT is used for

The official documentation gives DOT these jobs:

• Staking, directly as a nominator, through a nomination pool or through an exchange.
• Voting on OpenGov referendums, from treasury spending to runtime upgrades.
• Buying bulk or on-demand coretime for a chain.
• Paying transaction fees.
• Deposits, for example about 60 DOT for a validator's session keys on Asset Hub.

The app side is smaller than in the auction years. On 19 October 2026 the tracker parachains.info listed 27 active chains on Polkadot and 16 on Kusama, while the March 2026 postmortem counted 37 active parachains; the figures depend on the source and the date. DefiLlama still tracks Hydration, by far the largest of the group by value locked, along with Bifrost, Astar and Acala.

Moonbeam, one of the first five parachains of December 2021, is gone. Its token, GLMR, is moving one-for-one to an ERC-20 on Base, and the chain shut down on 31 July 2026. DefiLlama now shows its value locked at zero.

The newest piece is dotUSD. Referendum 1944, executed in October 2026 with 98.5% in favour, created a native, over-collateralised stablecoin owned by the protocol. In phase 1 it is minted one-for-one against USDT up to a cap; phase 2, not yet released, adds vaults backed by DOT. The treasury also put $2.5 million in DOT into a DOT and dotUSD pool on Asset Hub.

Polkadot ETF and ETP products

The 21Shares Polkadot Staking ETF, ticker TDOT, has traded on Nasdaq since 6 March 2026. It charges 0.30% a year, intends to stake between 40% and 95% of its DOT and pays rewards in cash at least once a quarter. Its page puts unbonding at 24 to 48 hours.

Grayscale took the other road. Its Polkadot Trust ETF, registered with the SEC in August 2025, never became effective. On Friday 7 August 2026 Grayscale filed to withdraw it, minutes apart from its Cardano and Hedera filings and without a stated reason, CoinDesk reported. No shares were sold. A withdrawal is not an SEC rejection, and Grayscale can file again.

Europe had a product first. 21Shares listed its Polkadot ETP in February 2021, on SIX Swiss Exchange in dollars and on Boerse Stuttgart in euros, with an annual fee of 2.5%, more than eight times the US fund's.

Risks of Polkadot

A smaller ecosystem

The parachain count is well below the auction years and Moonbeam has closed. In a 2026 article headlined "Polkadot Is Kind of Done", The Defiant quoted former insiders who blamed a lack of direction from leadership, treasury overspending and contributors left unpaid.

Delays and upgrade failures

JAM has no date. Staking reforms slipped as well. A progress timeline posted on 2 April 2026 aimed for the nominator changes by the end of May; they arrived on 6 July.

Upgrades can also break things. When runtime 2.1.1 was enacted at 12:37 UTC on 23 March 2026, 5 of 37 active parachains stopped producing blocks because their older collator software could not read a changed runtime interface. The first blocks from patched collators came at 19:13 UTC, more than six hours later, according to the postmortem. The Relay Chain kept finalising blocks throughout.

Bridged DOT is not native DOT

In April 2026 an attacker sent a forged message through Hyperbridge, took admin control of the bridged DOT contract on Ethereum and minted 1 billion tokens in one transaction. Thin liquidity limited the haul to about $237,000, CoinDesk reported on 13 April. Native DOT and the Relay Chain were not affected. A DOT token on another chain carries the risk of its bridge.

Regulation

On 4 November 2022 the Web3 Foundation's chief legal officer, Daniel Schoenberger, wrote that DOT "has morphed and is no longer a security", The Block reported. That is the foundation's position, and the SEC did not comment. We found no SEC ruling on DOT either way.

Where to buy DOT

As of October 2026, DOT trades on Kraken, OKX, Bitget, Bybit, Gemini, Bitpanda and Crypto.com, all checked on the exchanges' own pages. Kraken also offers DOT staking, depending on the customer's region. Our step-by-step guide to buying crypto covers accounts, verification and fees.

Before withdrawing, check that the receiving wallet supports native DOT on Polkadot's Asset Hub, not a bridged version on another chain.

The next fixed date is March 2028, when the two-year rule sets a new issuance rate, again 13.14% of whatever remains below the cap. A JAM timeline would be the other date to watch.