Blockchain
为什么我无法在不透露余额的情况下证明自己具备偿付能力？
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Opportunity
公链让每一笔余额永久可见。基金和交易所被要求证明储备金，通常的回答要么是一张需要你信任的截图，要么是泄露所有信息的全面披露。目前没有低成本的方法，能在不暴露其余信息的情况下证明关于资金的某一个事实。
Why it matters
选择性证明是缺失的基础原语，它能让受监管的资金在透明账本上自如运转。
我如何评估机会
The Opportunity Score is my own read, not a measurement: how much it hurts, how often it bites, and how little exists to solve it today. Higher means I think it is more worth building.
严重性8/10
How much pain it causes when it shows up.
频率7/10
How often people actually run into it.
空白空间9/10
How little good tooling exists for it today.