| 摘要 |
A process and an apparatus that perform seller credibility verification in trading of factual or opinionative information are disclosed. When buying information, buyers already have some prior information about the subject of the purchase. The present invention facilitates comparison of said prior information known by buyers with information known by sellers without revealing the content of the sellers' information to buyers before the sale completion. A buyer submits to a network server for the selected seller a verification request comprising the data the buyer expects the seller to know. The network server interacts with the seller and other data sources to obtain seller's verification data representing the seller's knowledge. The network server uses the seller's verification data for comparison against the data expected by the buyer. The comparison report not revealing the content of the seller's verification data is provided to the buyer.
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