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Polkadot (DOT) explained: how it works, and what moves it

Polkadot was built as a hub: one main chain that many smaller chains plug into. Its holders even vote on the rules, and in 2025 they voted to cap the supply.

Market guide · 5-minute read · Updated 2026-10-21

At a glance

What it is, briefly

Polkadot was created by Gavin Wood, a co-founder of Ethereum, with the Web3 Foundation. Its main network launched in 2020.

The design: one central chain (the relay chain) handles security. Other chains, once called parachains, connect to it and can pass messages to each other.

It uses a version of proof of stake where holders "nominate" validators. DOT is used for staking, fees and voting.

Supply changed in 2025. DOT used to have no cap, with about 120 million new DOT a year. In September 2025, holders voted (about 81% in favour) to set a hard cap of 2.1 billion DOT, with new issuance shrinking step by step from March 2026.

What moves it

• Bitcoin. DOT usually follows crypto's bigger direction.
• On-chain votes. Polkadot holders vote on spending and rule changes. Big votes, like the supply cap, get attention.
• Upgrades. Changes to how chains rent space on Polkadot, and long-planned upgrades, are watched closely.
• Staking changes. A large share of DOT is usually staked. Changes to rewards or unstaking can shift supply on exchanges.
• The Fed and risk mood. FOMC at 2:00 pm ET, CPI at 8:30 am ET.

When it's busiest

The team and much of the community are in Europe, so European mornings plus the US open (about 3:00 am to noon ET) carry a lot of the action. Weekends are thinner.

Remember: US data times are fixed in ET, but Europe's day shifts by an hour against ET for a few weeks each spring and fall.

Its personality

• Long, grinding trends. DOT has had long stretches moving one way, with weak bounces against the trend.
• Follows the pack. It often moves with other "platform" coins more than on its own news.
• News that sounds big can fade fast. Upgrade headlines are often already expected.
• Weekend tails. Thin hours leave long Wicks on the chart.

Reading it with our method

Look at bitcoin's daily chart first, then DOT's daily. Mark the last places price turned around. A downtrend is lower highs and lower lows. An uptrend is the reverse. See how to identify a trend.

Trade with DOT's bigger direction. A single green day inside a long downtrend is not a turn. Wait for a candle body to close past the last turning point.

Size from the stop. Example with made-up numbers: risk $30, stop $0.60 away. $30 ÷ $0.60 = 50 DOT. Use the position size calculator. A math example, not a promise.

Common mistakes

• Catching the falling trend. Buying every dip in a long downtrend is a common trap. The chart decides, not the story.
• Trading the vote, not the chart. Governance news is public. Price often moves before the result.
• Forgetting staking locks. Staked DOT takes time to unlock. You can't sell it instantly if you need to.
• Using a stop that's too tight for a coin that swings more than bitcoin in percent.

Questions