Dome sub-second blockchain market data
Dome
This reveals that Dome is trying to be trading infrastructure, not just a convenience wrapper. In prediction markets, speed decides who captures price dislocations after a goal, a tweet, or a sudden news headline. By pulling state from the underlying blockchain instead of waiting for a venue API to index and republish it, Dome can surface book changes fast enough for market makers, arbitrage bots, and analytics products that break when data arrives even a second late.
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Polymarket is the clearest fit for this approach because its trading system is built around offchain matching with onchain settlement on Polygon, and its own docs describe multiple feeds with different latency bands, from about 100ms WebSocket data to block time onchain data. Dome emerged from the team’s earlier work scaling blockchain infrastructure for Polymarket during the 2024 election surge.
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The contrast with Kalshi shows why direct chain reads matter as a product wedge. Kalshi exposes real time market data through WebSockets, but it runs as a regulated closed database system rather than a public chain, while Polymarket writes every trade to a public ledger. That makes Polymarket easier to reconstruct independently, and gives Dome more room to build historical books, wallet P and L, and faster cross venue matching from raw source data.
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This is aimed at a very specific customer. Dome says about 25% of usage already comes from traders, market makers, and high frequency users doing backtesting, analytics, and latency sensitive execution, while the broader market is concentrated among a small set of heavy traders. In practice, the company is selling picks and shovels to the firms most likely to professionalize prediction market trading first.
The next step is that raw speed turns into workflow control. As prediction markets fragment across crypto native venues, regulated exchanges, broker apps, and sportsbooks, the winning infrastructure layer will be the one that can ingest each venue’s source of truth, normalize the books, and route signed orders to the best venue before the market moves again.