# Introducing Mikoshi

> Binary Options on Oasys, powered by Saisen

**Published by:** [Mikoshi](https://paragraph.com/@mikoshi/)
**Published on:** 2025-12-25
**URL:** https://paragraph.com/@mikoshi/introducing-mikoshi

## Content

We're excited to introduce our upcoming protocol, Mikoshi, which is a binary option market on Oasys powered by Saisen. Mikoshi aims to provide a fast, game-like trading experience that accelerates activity and liquidity within the Oasys ecosystem.What is MikoshiMikoshi is a short-term binary options market on Oasys, where users predict the price movement of crypto assets over the next few minutes. Users place bets in pOAS on either “UP” or “DOWN.” If the price moves in the selected direction at the settlement time, the user wins a payout in pOAS. If not, the user loses the amount they bet.Key FeaturesSimple gameplay: Just choose UP or DOWNFixed multiplier payout: Win 1.7x when correctFast results: Short timeframes & rapid settlement cyclesVault-based liquidity: Rewards paid from an on-chain house vaultpOAS-based economy: Designed for high turnover & liquidity circulation inside OasysTrading TimeUsers can choose settlement duration:1 minute3 minutes5 minutesUnderlying AssetsCurrently supported:BTCETHBet Size AmountMinimum Bet10 pOASMaximum Bet20,000 pOASPayout StructureMikoshi uses a fixed-multiplier payout model. Payout rate: 1.70xPlatform fee: 15% (deducted from the bet amount) Effective stake = Bet × 0.85 Payout if win = Effective stake × 2.0 = Bet × 1.70How It WorksMikoshi operates using an on-chain Liquidity Vault, external oracle price feeds, and a fixed fee model. This section explains the core mechanics behind the product.Liquidity VaultAll payouts are made from a dedicated Vault that acts as the counterparty to users’ bets.Liquidity is pre-funded by the houseWhen users lose, the lost amount is added to the VaultWhen users win, payouts are taken from the VaultOraclePrice settlement uses aggregated external oracle sources to ensure fairness and resistance to manipulation. We reference multiple feeds, including:HyperliquidAerodromeThe settlement price is determined from the aggregated feed at the exact settlement timestamp.FeesMikoshi applies a 15% fee on the bet amount.How to Play MikoshiMikoshi is simple — just predict whether the price will go UP or DOWN within a short time window.1. Select AssetChoose the underlying asset:BTCETH2. Choose DurationSelect the settlement time:1 minute3 minutes5 minutes3. Enter Bet AmountSet the amount of pOAS you want to bet:Minimum: 10 pOASMaximum: 20,000 pOAS4. Predict Price DirectionChoose:UP 📈 — if you expect the price to be higher at settlementDOWN 📉 — if you expect the price to be lower5. Wait for SettlementMikoshi will lock your bet and settle based on oracle pricing at the end of the selected duration.6. SettlementIf you win, the payout in pOAS is automatically transferred to your wallet. If you lose, your bet amount is not returned.About MikoshiMikoshi is a short-term binary options trading dApp built on Oasys and powered by Saisen. Users can bet pOAS on short-term price movements of crypto assets and enjoy fast, game-like trading rounds. Mikoshi aims to expand liquidity circulation and activate the Oasys ecosystem by providing a fun, simple, and high-engagement trading experience. Predict. Bet. Win. https://x.com/mikoshibysaisen

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