On Apr 6, 2017 6:31 PM, "Tomas via bitcoin-dev" <
bitcoin-dev@lists.linuxfoundation.org> wrote:


Bitcrust just uses a *transaction-index*, where outputs can be looked up
regardless of being spent.



A network in which many nodes maintain a transaction index also enables a
class of light node applications that ask peers to prove existence and
spentness of TXO's.