Polkadot’s community-approved redenomination took effect on August 21, 2020 at block 1,248,328, changing the displayed unit of its native DOT token by a factor of 100. An official Polkadot announcement recorded the block at 16:48 UTC.

After the change, one DOT represented 10 billion Plancks, the network’s smallest accounting unit, instead of one trillion Plancks. A wallet balance previously displayed as one old DOT consequently appeared as 100 new DOT. The number of Plancks held did not change, and neither did the holder’s proportional share of the network.

That distinction was essential. The redenomination increased the numerical count of DOT units but did not mechanically create economic value, distribute additional underlying base units or change the network’s aggregate ownership. Any market price quoted per DOT had to be interpreted using the denomination applied by the exchange or data provider.

The first stakeholder vote reached implementation

The change followed Polkadot’s first network-wide stakeholder poll, which concluded on July 27, 2020. DOT holders could support the original denomination or a tenfold, hundredfold or thousandfold adjustment.

Polkadot co-founder Gavin Wood reported that 2.86 million old DOT participated. Of that amount, 2.47 million, or 86%, supported the 100-for-1 option; approximately 120,000, or 4%, supported retaining the original denomination. The official account described turnout as just under one-third of the tokens and said Web3 Foundation and Parity Technologies abstained.

The resulting schedule linked the change to another launch milestone. DOT transfers became available on August 18 at block 1,205,128. The redenomination was set for approximately 72 hours later, giving wallets, exchanges, custodians and data services time to prepare.

Implementation therefore marked more than a cosmetic ticker adjustment. It carried an early Polkadot governance decision from an on-network poll into the accounting systems through which users viewed and traded the asset. It also tested whether independent service providers could coordinate around a block-defined transition without confusing balances or prices.

Exchanges faced a synchronization problem

The redenomination did not require every centralized platform to change its display at the same moment. Kraken announced that it would use the new denomination when DOT trading began on August 18, three days before the official Polkadot transition. The exchange said this avoided interrupting its trading engine, funding systems, accounting and data processes after launch.

That decision was operationally understandable but created a temporary comparison problem: one service could display an old-DOT price while another displayed a numerically 100-times-lower new-DOT price, even when both represented approximately the same underlying quantity of Plancks. Kraken withheld withdrawals until the official transition, while other platforms published their own conversion schedules.

Consequently, price comparisons spanning August 21 require denomination normalization. A chart that joins old-DOT and new-DOT observations without adjusting by 100 can manufacture an apparent collapse or supply surge. This reconstruction makes no event-day price claim because the surviving sources use different venues, implementation times and quote conventions.

What the event established

The verified development was a change in DOT’s unit definition, executed according to the result and schedule announced by the network. It demonstrated stakeholder participation and ecosystem coordination, but it did not establish that Polkadot’s broader multichain design had achieved adoption or that DOT had acquired any particular market value.

The August 21 record should also be separated from Polkadot’s earlier transfer activation and from later exchange listings, price movements and technical milestones. Those developments require their own dates and evidence. On August 21, the defensible conclusion was narrower: one old DOT became the display equivalent of 100 new DOT, while the underlying Plancks and each holder’s proportional ownership remained unchanged.

Primary sourcePolkadot Official Announcements — August 21, 2020 redenomination confirmation

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