On Dec. 3, Polkadot (DOT) launched a DeFi focused initiative, the Polkadot DeFi Alliance, with Chainlink (LINK) and several other DeFi projects.

• The 10 member strong initiative is a join effort to advance DeFi research and development in the Polkadot ecosystem
• The collaboration was announced at the Polkadot Decoded event, an industry wide event that saw participation from multiple high-profile projects 
• Chainlink will be at the forefront of the alliance “helping to steer the direction of Polkadot's growing ecosystem of decentralized financial application” according to Dan Kochis, Global Head of Business Development
• Having launched on the mainnet in July, Polkadot since been involved in multiple DeFi related developments -- Band Protocol (BAND) and Acala announced on Dec. 2 that they would launch an Open Oracle Gateway for the Polkadot DeFi ecosystem