In order to solve the problems of product trust declining caused by consumers'uncertain perception of green product,the green product innovation and government subsidy decision-making models under traditional and blockchain supply chains are constructed,and the impacts of blockchain adoption on product greenness,market demand,and economic profits are compared and analyzed.Re-sults show that only when the cost of consumer privacy concerns is lower than a certain threshold,can manufacturers be motivated to adopt blockchain technology,which will help to increase the level of product greenness and make more profits for supply chain members,but not necessarily improve mar-ket demand.Under the moderate cost of privacy concern,blockchain may induce the emergence of"high price and low green"products,reducing consumer surplus.The increase in government envi-ronmental performance concerns under blockchain may lead to an increase in green subsidies but a de-crease in social welfare.
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