Block Chain Disruption and Smart Contracts
Abstract
Decentralized ledger technologies such as blockchains feature decentralized consensus as well as low-cost, tamper proof algorithmic executions, and consequently enlargethe contracting space and facilitate the creation of smart contracts. Meanwhile, the
process of reaching decentralized consensus changes the informational environment.
We analyze how these fundamental features reshape industry organization and the
landscape of competition. Smart contracts can mitigate information asymmetry and
deliver higher social welfare and consumer surplus through enhanced entry and compe-
tition, yet blockchain may also encourage collusion. In general, blockchain and smart
contracts can sustain market equilibria with a larger range of economic outcomes. We
further characterize smart contracts used in equilibrium and discuss anti-trust policy
implications, such as injecting noise into certain consensus record and encouraging
platform competition.