Comprehensive Guide: The first decentralized order book protocol on ETH, Gridex, in collaboration with Arbitrum, launches the second round of 2 million GDX airdrop. The first round of 4 million GDX airdrop ended on February 14, quickly claimed by 100,000 addresses within 20 hours. Ten days later, on February 24, Gridex officially announced the rules for the second round of 2 million GDX airdrop, which will last for 10 days, with 200,000 GDX distributed daily, and everyone is eligible to participate. Are you ready? This airdrop means that Gridex and D5 Exchange will be the first to support the Arbitrum network, officially becoming the first fully decentralized trading protocol based on the order book mechanism on Ethereum. Meanwhile, Gridex's code has been audited by Certik, allowing users to interact with peace of mind! Gridex Overview: The Gridex protocol utilizes its self-developed Grid Maker Order Book (GMOB) mechanism and Grid Price Linear Movement (GPLM) algorithm to address the high cost of bringing CEX matching algorithms based on matching engines on-chain, as well as the impermanent loss and slippage issues caused by traditional DEX based on AMM, aiming to provide users with a CEX-like smooth trading experience while ensuring on-chain transparency of user assets. Official website | Twitter | Discord | Audit D5 Exchange Overview: As the first fully decentralized exchange developed based on the Gridex trading protocol, D5 Exchange attracts liquidity with innovative Maker Orders while aggregating Uniswap and Curve as external liquidity, providing traders with the best trading rates, low gas consumption, and high order incentives. Official website | Twitter | Discord Detailed Rules for This Round of 2 Million GDX Airdrop Event Official Detail Page: https://airdrop.gdx.org/ Event Time: March 1, 2023, 00:00:00 UTC - March 10, 2023, 23:59:59 UTC Eligibility Conditions (Important!! All four conditions must be met to receive rewards!!): 1) Place orders on Arbitrum One mainnet through d5.xyz/trades during the event period; 2) Order trading pair requirement: ETH/USDC, i.e., place ETH sell or buy orders; 3) Order Grid setting requirement: 0.05% Grid; 4) Only fully executed Maker orders can receive the day's airdrop rewards. How to Receive Airdrop: 1) Ensure your wallet has both ETH and USDC digital assets on the Arbitrum mainnet; Transfer through the Ethereum - Arbitrum One cross-chain bridge: https://bridge.arbitrum.io/ Transfer directly from centralized exchanges supporting transfers to the Arbitrum network: Binance, Bitget, Bybit, Crypto.com, Houbi, Kucoin, MEXC, OKX; Purchase directly from trading platforms that support Arbitrum network assets: Banxa, CryptoRefills, FluidFi, Mt Pelerin, Ramp, Simplex, Transak, Wirex. 2) Go to: d5.xyz/trades 3) Connect your wallet and switch to the Arbitrum One mainnet 4) Place ETH buy or sell orders against USDC and wait for execution. For guidance on placing orders on D5, see this article: (D5 Testnet User Guide) 5) After full execution, you need to manually claim the trading assets and earned trading fees, and you can check the airdrop rewards on the Gridex airdrop page the next day. Detailed Reward Rules (a bit complex, can refer directly to examples): Order Reward Calculation Formula: [M'C' / ∑(MC)] * T Order Amount: M Order Coefficient: C Time from placing order to full execution/minutes (rounded): N Total Reward Amount for the trading pair during the event: T The calculation method for the order coefficient C is as follows: When N<=10, C=N^3; When N>60, C=3500+(N-60) If the placed order is not fully executed within the day or is canceled, then C=0. *That is, under the premise that the reward T remains unchanged, the larger the ratio of the value of a certain eligible order M'C' to the total value of all orders MC, the more rewards it receives; *Daily 200,000 GDX is used to reward fully executed ETH/USDC trading pairs, with buy and sell orders each accounting for 50% of the total reward, meaning fully executed ETH sell orders share 100,000 GDX, and fully executed ETH buy orders share another 100,000 GDX. Example 1: Suppose all ETH buy orders placed on March 1 from 00:00:00 - 23:59:59 UTC are as follows: Alice places a buy order for 1 ETH at a price of 1600 USDC at 01:00:00 UTC, and this buy order is fully executed at 01:10:00 UTC; Bob places a buy order for 2 ETH at a price of 1600 USDC at 01:00:00 UTC, and this buy order is fully executed at 01:20:00 UTC. It can be seen that for Alice: M=1600 USDC N=10, so C=10^3=1000 MC=1600 * 1000=1,600,000 For Bob: M=2*1600 USDC=3200 USDC N=20, so C=1100 MC=3200 * 1100=3,520,000 T=100,000 Therefore, the reward Alice can receive = 1,600,000/(1,600,000+3,520,000)*100,000=31,250. Correspondingly, Bob can receive a reward of = 3,520,000/(1,600,000+3,520,000)*100,000=68,750. Verification shows: 31,250+68,750=100,000, which means that Alice and Bob respectively shared all 100,000 GDX rewards for the day’s ETH buy orders. Example 2: Suppose all ETH buy orders placed on March 1 from 00:00:00 - 23:59:59 UTC are as follows: Alice places a buy order for 1 ETH at a price of 1600 USDC at 01:00:00 UTC, and this buy order is only partially executed at 0.5 ETH; the remaining 0.5 ETH is considered a new buy order that is fully executed at 00:10:00 UTC on March 2. Bob places a buy order for 2 ETH at a price of 1600 USDC at 01:00:00 UTC, and this buy order is fully executed at 01:20:00 UTC. It can be seen that for Alice, the order placed on March 1 was not fully executed, and thus does not participate in sharing the day’s rewards, so Bob will receive all rewards for the day’s 100,000 GDX for the ETH buy orders.

At the same time, Alice's remaining 0.5 ETH buy order was fully executed on March 2, and thus participates in sharing the 100,000 GDX rewards for the ETH buy orders on March 2.

Eligibility Conditions (Important!! All four conditions must be met to receive rewards!!): 1) Place orders on Arbitrum One mainnet through d5.xyz/trades during the event period; 2) Order trading pair requirement: ETH/USDC, i.e., place ETH sell or buy orders; 3) Order Grid setting requirement: 0.05% Grid; 4) Only fully executed Maker orders can receive the day's airdrop rewards. Bridge to Arbitrum Built to scale Ethereum, Arbitrum brings you 10x lower costs while inheriting Ethereum’s security model. Arbitrum is a Layer 2 Optimistic Rollup. Steps to Participate: 1) Ensure your wallet has assets that meet the conditions for participating in the trading airdrop on the Arbitrum mainnet: ETH, USDC; Transfer through the Ethereum - Arbitrum One cross-chain bridge: https://bridge.arbitrum.io/ Transfer directly from centralized exchanges supporting transfers to the Arbitrum network: Binance, Birget, Bybit, Crypto.com, Houbi, Kucoin, MEXC, OKX; Purchase directly from trading platforms that support Arbitrum network assets: Banxa, CryptoRefills, FluidFi, Mt Pelerin, Ramp, Simplex, Transak, Wirex. 2) Go to: d5.xyz/trades 3) Connect your wallet and switch to the Arbitrum One mainnet 4) Place ETH buy or sell orders against USDC and wait for execution. For guidance on placing orders on D5, see this article: (D5 Testnet User Guide) 5) After execution, you need to manually claim the trading assets and earned trading fees, and you can check the airdrop rewards on the Gridex airdrop page the next day.

Website https://gridex.org/