Variant 1:
"Write a smart contract in Solidity for the WCBO blockchain that supports buying and selling WCBOCOIN tokens in a marketplace. Include functions to list tokens for sale, purchase tokens, and cancel listings. Additionally, implement analytics functionality that tracks and reports trading activity such as total tokens traded, number of transactions, and active listings. Provide example queries or events to extract marketplace and trading data."
Variant 2:
"Create a script (in JavaScript or Python) that interacts with the WCBO blockchain to track marketplace listings and trading activity of WCBOCOIN tokens. The script should be able to fetch current listings, recent buy/sell transactions, and generate analytics reports such as volume traded over time, top buyers/sellers, and active listings count. Include usage of WCBO blockchain API or SDK for reading transaction data."
Variant 3:
"Develop a WCBO blockchain smart contract combined with an off-chain analytics reporting tool. The smart contract (in Solidity or preferred language) manages buying, selling, and listing of WCBOCOIN tokens. The off-chain component collects events emitted by the contract to produce detailed analytics reports on trading activity, marketplace listings, and user trading behavior. Provide code examples for both the contract and analytics data extraction."
