Last week, Binance HODLer airdrop went live on $LA. After getting the airdrop, I did a little research and recorded & shared it by the way. As a ZK project, Lagrange's core product is to verify off-chain computation or data analysis, generate proof that "an off-chain computation result is trustworthy", and provide a connection to on-chain 🆚 and off-chain data. It is also ZK technology, which is very different from the L2 scaling solution zkRollup. zkRollup is to package L2 transactions to L1 in batches for verification, which is an interaction between chains. Here's an 🌰 example For example, when we participate in the early days of Web3 projects, we will contribute a lot of data such as transaction volume, points, etc. Generally speaking, in the TGE of the project, the project team calculates the contribution of all users off-chain, which leads to a high cost of trust in the community, and it is difficult for the project team to prove that there is no rat warehouse, and similar unfair airdrop cases occur from time to time. However, if you want to put all these data on the chain and issue tokens according to contributions, the cost of on-chain computing is very high. The @LagrangeDev solution can solve a similar problem, it allows data analysis to be done off-chain, such as querying all users + trading volume in all time first, and then generating a zero-knowledge proof "everyone traded xxx USDC", and then verifying this proof on the chain, the whole process is open and transparent, and every user can verify. When the on-chain verification passes, the smart contract is triggered to allocate the corresponding airdrop to each user. Lagrange has three core products, DeepProve, ZK Prover Network and ZK Coprocessor, with different use case scenarios, such as the ZK Coprocessor core scenario is the airdrop fairness guarantee mentioned above, while DeepProve is more about verifying whether the AI results are credible. They all use ZK technology to solve on-chain verification-oriented problems, and can be combined in some complex scenarios. Lagrange as a whole is like an on-chain version of the "notary office", and ZK Technology is the notary public.