Long or Short ($LOS)
A skill-based crypto prediction game on Solana.
1 Abstract
Long or Short ($LOS) is a skill-based crypto prediction game built on Solana. Players watch live crypto price charts and predict whether the price will go up (LONG) or down (SHORT) within 30 seconds.
The game launches in two phases:
Demo Phase
Free-to-play with a demo balance of $1,000 per wallet. No real money, no token required. Purpose: build the game, test the mechanics, and grow the community.
Token Phase
$LOS launches on Raydium LaunchLab. Demo balance converts to real $LOS. Winners are paid in $LOS from the dev wallet; losers' stakes go to the dev wallet.
No house edge. No hidden fees. Odds reflect true market probability.
2 The Game
2.1 Round Structure
- Each round lasts 30 seconds.
- First 10 seconds — betting window open.
- Last 20 seconds — chart continues, no new bets accepted.
- At second 30, the round closes and settles instantly.
2.2 How to Win
- At round start, the current price is recorded as the reference price.
- At round close, the final price is compared to the reference:
2.3 Dynamic Odds
Odds adjust in real time based on:
- Price momentum over the last 60 seconds.
- Move from reference — how far the price has drifted from the round start.
- Time pressure — odds become more extreme as the round nears its close.
Odds range: 1.03x to 15x per side.
2.4 Markets
Initially supported pairs:
2.5 Player Identity
- Login via Phantom wallet on Solana.
- Wallet address = player identity.
- No email, no password, no KYC.
- Private keys never leave the player's wallet.
3 Phase Roadmap
Demo
Live at longorshort.tech
- Live chart game with demo balance ($1,000 per wallet)
- Phantom wallet login
- 3 markets (SOL, ETH, BNB)
- Dynamic odds engine
- Player history & round history per market
- No real money, no token, no risk
Purpose: Validate the game loop, refine UX, and grow the community before token launch.
Token Launch
- $LOS TGE on Raydium LaunchLab
- Dev wallet creation & public disclosure
- Demo → $LOS conversion for early players
- Real $LOS wagering goes live
- Payouts from dev wallet; losses to dev wallet
Expansion
- Additional markets (10+ pairs)
- Leaderboards & tournaments
- Referral & affiliate program
- Mobile-native experience
4 The Token — $LOS
4.1 Overview
| Name | Long or Short |
| Ticker | $LOS |
| Chain | Solana (SPL) |
| Decimals | 9 |
| Launchpad | Raydium LaunchLab |
| Total Supply | Published on LaunchLab at launch |
| Launch Date | Q2 2026 (planned) |
4.2 Fair Launch
- No team allocation.
- No private sale.
- No vesting schedule.
- All tokens enter circulation through the Raydium LaunchLab fair-launch pool.
4.3 Token Utility
- Bet — wager $LOS on LONG or SHORT.
- Payout — winners receive $LOS from the dev wallet.
- Refund — ties are refunded in $LOS.
4.4 Demo → $LOS Conversion
Players who participated during the Demo Phase (Q1) will be eligible for a one-time conversion bonus when $LOS launches. Details will be announced before TGE.
5 Game Economics
5.1 Player vs. House
The game operates as a player-versus-house model. The house is the dev wallet.
Player bets X $LOS at odds O
↓
WIN → Dev wallet pays X × O to the player
LOSE → Player's X $LOS goes to the dev wallet
TIE → Player is refunded X $LOS
5.2 Why the Dev Wallet Holds a Large Supply
The dev wallet is the game bankroll — equivalent to the "house" in a casino. It holds a large $LOS supply for three reasons:
Guaranteed payouts
Every winning bet is paid instantly. A large reserve ensures winners are always paid, at any time, without delay.
Absorbing variance
Even with fair odds, short streaks of player wins can occur. A large bankroll absorbs these swings without running dry.
Bootstrapping liquidity
At launch, no players hold $LOS. The dev wallet provides initial liquidity so the game runs from day one.
5.3 Transparent by Design
The dev wallet's holdings are publicly visible on the Raydium LaunchLab pool. Anyone can verify:
- How much $LOS the dev wallet holds.
- How it changes over time based on game outcomes.
No hidden supply. No locked allocations. Everything is on-chain.
5.4 Fair Odds
Odds reflect true market probability:
| Situation | Long Odds | Short Odds |
|---|---|---|
| 50 / 50 | 2.00x | 2.00x |
| 60 / 40 | 1.67x | 2.50x |
| 90 / 10 | 1.11x | 10.00x |
There is no artificial house edge. A perfectly neutral player base leaves the dev wallet roughly unchanged over time.
5.5 Exposure Cap
A maximum payout per round is enforced to prevent catastrophic losses. Excess bets above the cap are partially refunded. The cap value is published on the website.
6 Technology
6.1 Stack
| Layer | Technology |
|---|---|
| Frontend | HTML, CSS, JavaScript |
| Charting | TradingView Lightweight Charts |
| Backend | Node.js + Express + WebSocket |
| Price Feed | Binance WebSocket (real-time) |
| Storage | Redis |
| Chain | Solana (SPL) |
| Auth | Sign-In With Solana (SIWS) |
| Wallet | Phantom |
6.2 Architecture
[Binance Feed] → [Game Server] → [WebSocket] → [Player]
↓
[Redis]
↓
[Solana RPC] ↔ [Phantom Wallet]
The server relays prices, manages rounds, validates bets, and orchestrates settlements. Solana handles on-chain $LOS transfers.
7 Fairness & Security
- No custody. Private keys never leave the player's Phantom wallet.
- Message-sign only. Login uses SIWS — no key exposure, no seed phrase.
- Live price feed. Prices sourced from Binance and independently verifiable.
- Server-authoritative. Odds and settlement computed server-side; clients only render.
- Betting window closes 20 seconds before settlement.
- One bet per player, per round, per market.
8 Legal Disclaimer
$LOS is a utility token intended solely for use within the Long or Short game. It is not an investment, security, or financial instrument.
- The game is a skill-based prediction game, not a gambling service.
- Players participate at their own risk.
- Regulatory treatment varies by jurisdiction; users are responsible for local compliance.
- The team reserves the right to modify game rules and tokenomics with public notice.
This document does not constitute financial advice.