Polkadot executed runtime upgrade v2.1.0 today, March 12, marking the most significant change to its economic model since the network launched. The upgrade writes a hard supply cap of 2.1 billion DOT into the protocol — replacing what was previously an uncapped inflationary model — and activates a new Dynamic Allocation Pool (DAP) that replaces the old treasury burn mechanism.

The full issuance cuts follow on March 14, the date chosen deliberately for its Pi Day symbolism (3.14). Annual DOT issuance drops from approximately 120 million to 56.88 million tokens — a 53.6% reduction — bringing annual inflation down from roughly 10% to 3.11%. Going forward, emissions will decrease by 13.14% of the remaining supply every two years.

What Changes for Stakers

The DAP consolidates all newly minted DOT alongside transaction fees, coretime sales revenue, and validator slashing penalties into a single on-chain account. Governance now decides how to distribute those funds across validator rewards, staking incentives, treasury budgets, and a strategic reserve.

Staking mechanics also tightened. Validators must now lock a minimum of 10,000 DOT as self-stake and are subject to a 10% minimum commission. In exchange, nominators become unslashable — they can no longer lose funds when a validator misbehaves. The unbonding period shrinks from 28 days to 24–48 hours.

The overhaul was approved via OpenGov referendums 1710 and 1828, passing with 81% support. The first US-listed Polkadot ETF, 21Shares TDOT, launched on Nasdaq on March 6 with $11 million in seed capital ahead of the event.