[brisky]

Hi, author here. Regarding backdating it is a valid concern. I did not mention in the article, but in my proposed architecture users could post links of others (consider that a retweet). For links that have reposts there could exist additional security checks implemented to check validity of post time.

Regarding hosting partial data: there should be an option to host just recent data for the past month or other time frames and not full DB of URLs. This would make decentralization better as each instance could have less storage requirements, but total information would be present on the network.