👉 Coupon computing is a novel approach to secure and efficient computation, particularly useful in blockchain and distributed systems. It involves pre-computing and distributing "coupons," which are mathematical functions that can be evaluated quickly and securely without revealing the inputs. When a computation needs to be performed, instead of computing it directly on the data, the system uses a coupon that, when applied to the inputs, produces the desired result. This method ensures privacy and security because only the coupon holder knows how to decrypt or interpret the result, and the computation itself is transparent to all parties involved. This technique is particularly beneficial for applications like secure voting systems, private smart contracts, and decentralized data marketplaces, where confidentiality and trust are paramount.