The article's hash will be included in an Edgecase Datafeed checkpoint article. Some bitcoin is then transferred to the Bitcoin address derived from the hash of the checkpoint article. This timestamps the existence of the checkpoint article and all the articles linked to it. The timestamp is permanently valid, even if the article is later depublished. Preservation of the article and its corresponding checkpoint article will allow verification of the timestamp in the Bitcoin blockchain.
The hash of any associated asset is embedded in the article - this means that the article's assets are also timestamped.