We present three smart contracts that allow a briber to fairly
exchange bribes to miners who pursue a mining strategy benefiting the
briber. The first contract, CensorshipCon, highlights that Ethereum’s
uncle block reward policy can directly subsidise the cost of bribing miners.
The second contract, HistoryRevisionCon, rewards miners via an
in-band payment for reversing transactions or enforcing a new state of
another contract. The third contract, GoldfingerCon, rewards miners
in one cryptocurrency for reducing the utility of another cryptocurrency.
This work is motivated by the need to understand the extent
to which smart contracts can impact the incentive mechanisms involved
in Nakamoto-style consensus protocols
