Abstract
Recently blockchain technology has attracted increasing attention. It provides a distributed peer-to-peer network. It also allows to enlarge the contracting space using smart contracts. Smart contract is a numeric protocol which define a promises between parties. In a blockchain platform, we can find millions of smart contracts which are created by different users (developers). The smarts contracts created by users and saved in a blockchain can be similar in functionality, even if different users use different wording. This paper presents a new search engine in the blockchain. The novelty of our search engine is to help users to checks their smart contracts by referencing some similar existing smart contracts created and saved in a blockchain platform. Our search engine allows to give each user an adaptive set of similar smart-contracts based on the user's similarity needs. Our search engine is developed in the Ethereum blockchain platform. Experiments demonstrate the potential of our search engine system under different scenarios.
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