Prior to the ICO era, #airdrops were used as a marketing technique, rewarding traders for endorsing the project and holding its token for a set amount of time.

Arbitrum, an Ethereum layer-2 scaling solution, launched an airdrop of its ARB governance token on March 16, with qualifying recipients anticipated to receive the token on March 23. The excitement surrounding its airdrop has now aided another layer-2 solution, zkSync, in experiencing considerable week-over-week growth.

ZkSync is another #Ethereum layer-2 scaling solution that supports nonfungible tokens (NFT) as well as atomic swaps and transfers of Ether. #ETH tickers are down $1,755, as are ERC-20 tokens on the Ethereum network.

More than 39,000 addresses have bridged over $871 million to #zkSync in the last seven days, based on data from crypto on-chain analytic firm Nansen. In the previous week, the number of addresses bridging to zkSync has increased fivefold.

Following the #Arbitrum airdrop, zkSync and StarkNet are considered the most valuable impending airdrops. On March 17, approximately 5,000 individuals transferred over 536 ETH via the zkSync bridge, while nearly 3,000 users deposited over 234 ETH via the StarkNet bridge.

Although zkSync does not have a native token and has not announced any airdrops, the excitement around the Arbitrum airdrop has caused many supporters to believe they will be rewarded in the near future.

The airdrop hoopla comes despite numerous phony and fraudulent airdrops attempted by crooks utilizing Arbitrum branding.

A crypto airdrop is a promotional tactic used by cryptocurrency projects to raise buzz about the project. As a present, the crypto projects behind these airdrops frequently deposit digital tokens directly into the wallets of active blockchain community members. Many of these airdrops have predefined eligibility criteria that reward users for spreading project awareness.

Airdrops have been popular since the early days of the crypto industry, with the first taking place in 2014. Due to regulatory scrutiny, projects have recently modified their marketing techniques.

Because of factors such as the people behind the initiatives and the project's use cases, not all crypto airdrops are equivalent in value. Arbitrum, Optimist, and zkSync, on the other hand, are some of the early layer-2 solutions with track records. This has drawn more traders to the Arbitrum airdrop, which may turn out to be more valuable than traditional crypto airdrops.