Calibre

CΛLIBRE is an esports prediction market built like a competitive game, where fans turn their read of live matches into trades, rankings, and status. Prediction markets enable users to trade on their expectations on future events, creating a real-time measure of collective expectations. In esports, this means viewers can now act on their read of a match as it unfolds and take positions where they believe the general audience is misevaluating the match-state. Currently, there is no prediction market tailored specifically for the gamer.

This is an elephant in the room waiting to be captured: gamers are the natural audience for trading. Competitive play develops the same core instincts—assessing odds in real time (given current circumstances, is this action likely to be successful?), updating positions as information changes (this happened, how do we respond?), familiarity with economic management, decision-making under incomplete information, and emotional control under pressure. Most importantly, both offer a tight feedback loop that lets participants build intuition through repetition.

Why will CΛLIBRE capture this market rather than existing prediction platforms? Because the incumbents were not built for this audience. Their center of gravity is crypto, politics, and traditional sports; CΛLIBRE is designed for gamers at every layer of the product — not just the markets themselves, but the interface, incentives, social status systems, and visual language. To a gamer, existing prediction markets feel like products from a different universe. CΛLIBRE feels native.

Features like ranked leaderboards, persistent match and trade history, and a visible track record turn trading from a disposable transaction into a competitive loop built around judgment, performance, and status.

I’m Hansel, the founder of CΛLIBRE. As a teenager, climbing ranked leaderboards became one of my first chosen pursuits of mastery: pushing beyond limits not just for fun, but also to find out who I could become. Unfortunately, and quite unreasonably, I wasn’t allowed to play an infinite amount, and so maintained academics begrudgingly and competed seriously in volleyball, alongside teammates who went on to play professionally.

I mean, that’s cool I guess, but how does that lead to CΛLIBRE?

CΛLIBRE is the synthesis of my core experiences as a quant and a gamer.

After leaving quantitative finance with an amendment to my philosophy, “the pursuit of excellence *in something you care about” (read: not money). Around the same time, I began trading on esports match outcomes through emerging prediction markets.

As I traded and built tools to support my own decision-making. It became clear the opportunity was not just to trade better myself, but to build a platform where gamers across titles could express, test, and measure their edge in a market built for them, to create a beautiful and immersive tool for gamers to capitalize on their gamesense.

It's a bit of a hefty project, a lot of moving components. I guess it grew under me?

Right now, prices are linked to Polymarket (the primary platform I currently use to trade esports outcomes before Calibre takes that spot). The peg is enforced by a bot that actually trades on the platform. Prices are maintained by an LMSR (logarithmic market scoring rule) automated market maker.

There's an LLM data analyst tool for the match history of all the teams, but isn't really relevant for this weekend. Lots of background loops maintaining market lifecycle, Polymarket polling, bot activity, weekly points (when we were paper trading only), data pulling / normalization. The contract has been signed with GRID, Riot Games' "Official Worldwide Esports Data Partner", allowing us to move off of Polymarket as an oracle and lets us build our own market-making model.

Users are ranked by their performance, with a leaderboard and rewards for top traders (coming soon).

Of the technologies I used today, I quite enjoyed ENS in combination with Dynamic. Gamers now have the ability to create an account, embedded wallet seamlessly while keeping their cool aesthetic gamer tags. If desired, users can link their Discord to their Calibre account, where their rank, bestowed by their trading performance and auto-updated via ENS, is public for all to see. Social is a big part of gaming, and also crypto. For Calibre, this means Clans, joining groups with friends for aggregated results, and perhaps outcomes / rewards in the future. Maplestory was the inspiration here.