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What is flash11?

marshal-am/flash11 — explained in plain English

Analysis updated 2026-05-18

0TypeScriptAudience · developerSetup · hard

In one sentence

A Solana blockchain prediction market for live football where players guess match stats every five minutes and get paid based on how close they were.

Mindmap

mindmap
  root((FlashXI))
    What it does
      Live match prediction
      Five minute windows
      Proximity based payout
    Tech stack
      TypeScript
      Solana
      Anchor
      TxLINE oracle
    Use cases
      Sports prediction
      Oracle verification
      Full stack blockchain study
    Audience
      Blockchain developers
      Prediction market builders

Code map

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filefunction / class

What do people build with it?

USE CASE 1

Predict live football match statistics in five minute windows and earn a proportional payout

USE CASE 2

Build or study a blockchain based prediction market that pays out by closeness rather than win or lose

USE CASE 3

Explore how Merkle proof oracles like TxLINE verify real world sports data on chain

USE CASE 4

Study a full stack Solana project with on chain programs, a backend, and a frontend

What is it built with?

TypeScriptSolanaAnchorBlockchain

How does it compare?

marshal-am/flash110xkinno/astraea0xkinno/halcyon
Stars000
LanguageTypeScriptTypeScriptTypeScript
Setup difficultyhardhardhard
Complexity4/54/5
Audiencedeveloperdeveloperdeveloper

Figures from each repo's GitHub metadata at analysis time.

How do you get it running?

Difficulty · hard Time to first run · 1day+

Requires understanding Solana Anchor programs and devnet deployment to run locally.

So what is it?

FlashXI is a live football prediction market built on the Solana blockchain. Instead of betting on who wins a match, every five minutes during a game a new prediction window opens with one question: what will the running match stats look like by the end of this window. Players submit a guess made of six numbers describing those stats, put stake money in USDC into a shared pool, and get paid a share of that pool based on how close their guess was to what actually happened, rather than simply winning or losing a yes or no bet. The project introduces its own building block for this, called Express Micro Markets, and settles the real match outcome using a system called TxLINE, which provides cryptographic Merkle proofs so the result used to pay out players can be verified rather than trusted blindly. The core pieces run as Solana programs, currently deployed on Solana's public test network called devnet: a market program, a vault that holds staked funds, an oracle adapter that connects to TxLINE, and a treasury program. The codebase is organized into the Solana programs themselves, a backend that handles authentication, live data streaming, fetching match data and proofs, running demo sessions, and simulating bot players, plus a frontend web application. Each major folder has its own README with more detail. The project includes a live demo app, a demo video, and a pitch deck, suggesting it is an early stage, hackathon style project aimed at people interested in blockchain based prediction markets and sports betting alternatives rather than a finished commercial product. The README does not state a license. The full README is longer than what was shown.

Copy-paste prompts

Prompt 1
Explain how the Express Micro Markets prediction model differs from a normal win or lose betting market
Prompt 2
Walk me through how TxLINE's Merkle proofs are used to settle a market in this project
Prompt 3
Show me the relationship between the market, vault, oracle adapter, and treasury Solana programs
Prompt 4
Help me understand the six dimensional guess vector players submit for each match window
Prompt 5
Summarize the backend data layer and how it feeds live match data into the prediction markets

Frequently asked questions

What is flash11?

A Solana blockchain prediction market for live football where players guess match stats every five minutes and get paid based on how close they were.

What language is flash11 written in?

Mainly TypeScript. The stack also includes TypeScript, Solana, Anchor.

How hard is flash11 to set up?

Setup difficulty is rated hard, with roughly 1day+ to a first successful run.

Who is flash11 for?

Mainly developer.

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