Curve announced that Curve LP tokens can be used as collateral for borrowing while still earning CRV emissions and trading fees. The first of these so-called productive LP markets is the reUSD/sfrxUSD LP token, which is coming to llamalend, Curve's lending protocol, as collateral for borrowing crvUSD. Resupply, the Convex–Yearn protocol behind reUSD, was tagged in the announcement.