“We’re working around the clock to fix the issues and to ensure we give you the quality experience you deserve,” the tweet assured users. “So we can manage demand, will be [sic] releasing each product in a staggered approach (one-by-one) – starting with the website buy & swap function – today.”
As the record of a cryptocurrency’s entire transaction history to date, a blockchain has a finite length — containing a finite number of transactions — that increases over time.

US futures linger at all-time highs while cryptos hit new records, as Fed rings alarm on market risks
Subscriber growth is harder to track than the other metrics. Only the current subscriber count is displayed for a particular subreddit, and historical data cannot be rebuilt retrospectively as subscribers do not have a visible historical imprint. A third-party website, RedditMetrics (http://redditmetrics.com/), has been retrieving and storing real-time subscriber counts; however their data on the particular subreddits of interest only reaches back to 2012 so the subscriber growth analysis can only start at this point. Fig 2 shows the three social media metric time series for each cryptocurrency; note that subscriber growth is the only metric that can have negative associated values, caused by more users unsubscribing than subscribing on a particular day.