Scroll has launched Session One. At this stage, we will receive stamps for providing liquidity to various DeFi protocols and using landing pages. 

Stamps are awarded according to the following formula: 
Value x Action x Time 

• Value: the amount of your assets;
• Action: value on the network (using the official bridge, holding $ETH. $USDC on balance and so on);
• Time: Asset retention time, the longer the better.

Lending:
• Aave
• Rho Markets
• Cog Finance
• Compound
• LayerBank
• Synonym

DEX: 
• Ambient
• Nuri
• Izumi
• Oku Trade
• SyncSwap
• Zebra

More information:
https://scroll.io/blog/session-one-defi-on-scroll