ZKsync: Airdrops are divided into user-based distribution and contributor-based distribution. Wallets in the contributor category do not need to display activities on ZKsync Era.

ZKsync has responded to the question of 'why some transactions with 0 addresses still receive allocations'. It states that the airdrop is divided into user-based allocation (89% of the airdrop) and contributor-based allocation (11% of the airdrop). Wallets in the contributor category do not need to show activity on ZKsync Era. For example, contributor allocations focus on early projects built on ZKsync, contributions to related Github repositories, security research, community management on Discord, or participation in communities such as Degen, Bonsai, Crypto the Game, Pudgy, and Milady.
There are 184 addresses that meet the ZKSync Lite eligibility criteria and have bridged assets on the ZKSync Era but no other transactions. These wallets are eligible for the airdrop.
In addition, 10 test addresses have been added for internal quality assurance and testing. These addresses have been allocated a minimum of 917 tokens. Once claimed, these tokens will be sent to the burn address.