# A Survey on Blockchain-Based Search Engines
## 4 The Blockchain-Based Search Engines
### BitClave  
BASE (BitClave [14], Active Search Ecosystem) is an open, public, decentralized platform that allows users to use and share their data selectively. This platform allows for direct customer-to-business communications without the use of intermediaries. End users, companies, and ecosystem members are the key participants in BASE. End users have power over their identity and who has access to their data in BASE. End users can save time and effort by receiving deals that are ideally suited to their needs, owing to BASE. The BASE will provide users with highly targeted promotions based on personal information they voluntarily share. Concentrating their promotional efforts on closely matched end users helps them achieve productivity in consumer acquisition and retention. By engaging in BASE, BASE partners will generate additional revenue streams. When a successful transaction between companies and consumers occurs due to services rendered, ecosystem members are compensated. In other words, the BASE is a decentralized marketplace [14].  
BitClave's solution allows large and small businesses to collaborate in an ecosystem. Users and other data providers are rewarded on the value of their data, which are determined by conversions (not clicks), owing to the creative search technology, which allows sellers to pay directly for outcomes, maximizing marketing spend for performance. Consumers benefit from cash rewards and lower-cost commodities while also having control of their data.  
For the first time, BitClave allows for the optimization of the seller-consumer value chain. Third parties are encouraged to provide data that maximize seller-consumer business efficiency, advertising, and deals, resulting in the lowest-cost outcome in the BitClave ecosystem. Analytics providers will participate in a diverse app ecosystem and be rewarded for their creativity, funded by improved overall business performance--all benefitsfrom removing the waste from today's massive advertisement network solutions. As technology advances, BitClave's open ecosystem ensures that competition in the advertising industry continues.  
Advertising, a multibillion-dollar industry, is disrupted. Businesses today have to deal with a slew of intermediaries in the advertisement stack. The dominant advertisement firms (e.g., Google, Amazon, Facebook) charge exorbitant fees to reach customers. BitClave uses Blockchain technology to allow mutually distrusting parties to participate in mutually beneficial co-enterprise without a central authority. Decentralized search is the next step in the evolution of ads as a tool for connecting people and businesses. BitClave reimagines a more open and meaningful platform for people and companies to participate in value creation using these influential design trends. BitClave technology allows for scalable, safe, and anonymous search through large datasets and data privacy and a mechanism to transact valuable data with attestation. BitClave was established to reimagine business-customer relationships based on the confidence and transparency of smart contracts. The proposed solution can destabilize one of the world's biggest industries, the ad network, which is currently monopolized by multinational companies and dominated by middlemen.