ETEC (Electronic Cigarette Chain) is based on blockchain technology, integrating alliance and public chains, and incorporating multi chain mechanisms and cross chain protocols to provide solid and innovative technological support for the e-cigarette industry. On the one hand, ETEC absorbs the advantages of public chain openness and transparency, integrates Ethereum's smart contracts, reduces the cost of business execution, and makes rules transparent, allowing unfamiliar trading entities to trust each other; On the other hand, the Electronic Cigarette Chain (ETEC) has absorbed the advantages of alliance chains for privacy protection, meeting the privacy requirements of merchants and users for information and transactions....