Trust funds don’t exist where I live, can I substitute it with crypto?

I live in Indonesia. Trust funds basically don’t exist here, and investing in foreign ETFs is messy (brokers, FX, income tax, reporting).Crypto is weirdly simpler. Trades here are taxed with a final tax (~0.1–0.2%) buy/sell and you’re done.That made me wonder: could smart contracts act like a low-cost “trust fund”?

Rule-based investing (tokenized ETFs/T-bills), auto-rebalancing, monthly cash-outs to local currency, no banks or trustees.

But maybe I’m missing something:
– wallet loss / key management
– smart contract risk
– regulation catching up?

Is there already a service for this use case?