The most complete guide: Gridex, the first decentralized order book protocol on ETH, joins hands with Arbitrum to launch the second round of 2 million GDX airdrops. The first round of 4 million GDX airdrops by Gridex just ended on February 14th. Within 20 hours, 100,000 addresses quickly claimed them all. Ten days later, Gridex officially announced the rules for the second round of 2 million GDX airdrops on February 24th. This airdrop will last for 10 days, with 200,000 GDX per day. Everyone is eligible to participate. Are you ready? This airdrop means that Gridex and D5 Exchange will take the lead in supporting the Arbitrum network. Starting from the Arbitrum ecosystem, it will officially become the first fully decentralized trading protocol based on the order book mechanism on Ethereum. At the same time, the Gridex code has been audited by Certik, so everyone can interact with peace of mind! Introduction to Gridex The Gridex protocol solves the high cost of introducing the matching algorithm based on the CEX matching engine onto the chain, as well as the impermanent loss and slippage problems caused by the traditional DEX based on AMM, through the self-developed Grid Maker Order Book (GMOB) mechanism and Grid Price Linear Movement (GPLM) algorithm. It aims to provide users with a smooth trading experience like CEX while ensuring the transparency of user assets on the chain. Official website | Twitter | Discord | Audit Introduction to D5 Exchange As the first fully decentralized exchange developed based on the Gridex trading protocol, D5 Exchange attracts liquidity through the novel Maker Order while also aggregating Uniswap and Curve as external liquidity, providing traders with the best trading exchange rate, low Gas consumption, high order incentives and other mechanisms. Official website | Twitter | Discord Detailed explanation of the rules for this round of 2 million GDX airdrops Event official website details page: https://airdrop.gdx.org/ Event time: March 1, 2023 00:00:00 UTC - March 10, 2023 23:59:59 UTC Collection conditions (Important!! You must meet the following 4 conditions at the same time to receive rewards!!): 1) Place an order through d5.xyz/trades on the Arbitrum One mainnet during the event; 2) Order trading pair requirements: ETH/USDC, that is, place an ETH sell order or buy order; 3) Order Grid setting requirements: 0.05% Grid; 4) Only fully executed Maker orders can receive the airdrop reward on the day. How to receive the airdrop: 1) Make sure your wallet has two digital assets, ETH and USDC, on the Arbitrum mainnet; Through the Ethereum - Arbitrum One cross-chain bridge: https://bridge.arbitrum.io/ Directly transfer to the Arbitrum network through centralized exchanges that support transfers to the Arbitrum network: Binance, Bitget, Bybit, Crypto.com, Houbi, Kucoin, MEXC, OKX; Directly purchase through trading platforms that support the purchase of Arbitrum network assets: Banxa, CryptoRefills, FluidFi, Mt Pelerin, Ramp, SImplex, Transak, Wirex. 2) Enter: d5.xyz/trades 3) Connect your wallet and switch to the Arbitrum One mainnet 4) Place an ETH to USDC buy or sell order and wait for the transaction to be completed. For how to place an order on D5, please see this article: "D5 Testnet Usage Tutorial" 5) After the transaction is completed, you need to manually claim the transaction assets and transaction fees obtained. The next day, you can connect your wallet to the Gridex airdrop page to view the airdrop rewards. Detailed explanation of the reward rules (a bit complicated, you can directly look at the examples): Order reward calculation formula: [M'C' / ∑ (MC)] * T Order amount: M Order coefficient: C Time from placing an order to completing all transactions/minutes (rounded up): N Total reward for this trading pair during the event period: T Among them, the calculation method of the order coefficient C is as follows: When N<=10, C=N^3; When 1060, C=3500+(N-60) If the order is not fully executed or cancelled within this day, C = 0. * That is, under the premise that the reward T remains unchanged, the greater the proportion of the M'C' value of a certain order that meets the requirements to the total MC value of all orders, the more rewards will be obtained; * Every day, 200,000 GDX is used to reward the fully executed ETH/USDC trading pair, and the buy and sell orders each account for 50% of the total reward, that is, the fully executed ETH sell orders share 100,000 GDX, and the fully executed ETH buy orders share 100,000 GDX. Example 1: Assume that all ETH buy orders that occurred between 00:00:00 and 23:59:59 UTC on March 1 are as follows: Alice placed a buy order for 1 ETH at 1:00:00 UTC on March 1 at a price of 1,600 USDC, and the order was fully executed at 1:10:00 UTC; Bob placed a buy order for 2 ETH at 1:00:00 UTC on March 1 at a price of 1,600 USDC, and the order was fully executed at 1:20:00 UTC. It can be seen that for Alice: M=1600 USDC N=10, then C=10^3=1000 MC=1600 * 1000=1,600,000 For Bob: M=2*1600 USDC=3200 USDC N=20, then C=1100 MC=3200 * 1100=3,520,000 T=100,000 Then Alice can get the reward = 1,600,000/(1,600,000+3,520,000)*100,000=31,250 Correspondingly, Bob can get the reward = 3,520,000/(1,600,000+3,520,000)*100,000=68,750 After verification, we can get: 31,250+68,750=100,000. That is, Alice and Bob divided all 100,000 GDX rewards for ETH purchase orders on that day according to the above rules.Example 2: Assume that all ETH buy orders from 00:00:00 to 23:59:59 UTC on March 1 are as follows: Alice placed a buy order for 1 ETH at 1:00:00 UTC on March 1 at a price of 1600 USDC. Only 0.5 ETH of this buy order was traded at 1:10:00 UTC. The remaining 0.5 ETH was considered as a new buy order at 00:00:00 UTC on March 2 and was fully traded at 00:10:00 UTC on the same day. Bob placed a buy order for 2 ETH at 1:00:00 UTC on March 1 at a price of 1600 USDC. This buy order was fully traded at 1:20:00 UTC. It can be seen that for Alice, the order was not fully traded on March 1, so she does not participate in the sharing of the rewards for that day. Therefore, Bob will receive all the rewards for the 100,000 GDX buy orders for ETH on that day.

At the same time, Alice’s remaining 0.5 ETH buy order was fully executed on March 2, so she participated in sharing the 100,000 GDX reward for the ETH buy order on March 2 according to M=1.

Conditions for receiving rewards (Important!! You must meet the following 4 conditions at the same time to receive rewards!!): 1) Place an order through d5.xyz/trades on the Arbitrum One mainnet during the event; 2) Order trading pair requirements: ETH/USDC, that is, place an ETH sell order or buy order; 3) Order Grid setting requirements: 0.05% Grid; 4) Only fully executed Maker orders can receive the airdrop rewards for the day. 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. Participation steps: 1) Make sure your wallet has assets on the Arbitrum mainnet that meet the conditions for participating in the airdrop: ETH, USDC; Through the Ethereum - Arbitrum One cross-chain bridge: https://bridge.arbitrum.io/ Directly transfer through centralized exchanges that support transfers to the Arbitrum network: Binance, Birget, Bybit, Crypto.com, Houbi, Kucoin, MEXC, OKX; Directly purchase through trading platforms that support the purchase of 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 a buy or sell order for ETH against USDC and wait for the transaction to be completed. For information on how to place orders on D5, please refer to this article: "D5 Testnet Usage Tutorial" 5) After the transaction is completed, you need to manually claim the transaction assets and transaction fees obtained. You can connect your wallet to the Gridex airdrop page to view the airdrop rewards the next day.

Website: https://gridex.org/