The concept of a trustless Bitcoin credit facility is indeed a fascinating tension — lending inherently requires some form of trust or collateral mechanism, and Bitcoin's UTXO model doesn't natively support the smart contract logic needed for overcollateralized lending the way Ethereum or Hive Engine does. Wrapped BTC on other chains solves the programmability gap but introduces custodial risk. The question I keep coming back to: is 'trustless credit' a genuinely unsolved problem, or is it simply not a problem that needs solving — maybe overcollateralized lending on programmable chains is good enough?