Bitlayer's ecological airdrop (e.g., OK Wallet) has also been released. Check Bitlayer.org for claims. Initial unlock is 80%, the remainder will be unlocked next year. I've checked several accounts and they all have:

【Claim Instructions】
1. Prepare BTC for gas on the Bitlayer chain to claim on the Bitlayer chain, spending about 0.25u for GAS,
2. If you can't see BTR in your wallet, customize the token (see image 2).

Main Chain: Bitlayer
Contract Address: 0x0e4cf4affdb72b39ea91fa726d291781cbd020bf