At publication time, the value of one bitcoin on BTC China stands at ¥2,630£266.0202), down from a high of ¥7,395£741.7070) in late November.
One bitcoin could be $508.58 on Coinbase but $507.90 on Coindesk or $508.50 on Bitstamp.
Bitcoin's value fluctuates based on supply and demand; one bitcoin is currently worth about $642.
The price of one bitcoin reached $875 on the Europe-based Bitstamp exchange, its strongest level since January 2014, putting the cryptocurrency on track for its best daily performance in six months.
One Bitcoin was worth $934 on the Tokyo-based Mt Gox exchange on 10 December - up from $14 at the beginning of the year.
The price of one bitcoin peaked at $266 on 10 April, before tumbling rapidly to a low of $50 shortly after.
A paper from 2012 estimated that almost one bitcoin in 20 was spent on the site, and economist Jeffrey Cook of World's First currency brokers warned that investors were "scrabbling for the exit".
Over the two weeks to 21 October, the value of one bitcoin rose by almost $60, and on Tuesday hit a high of $197.40 at the largest exchange, Mt Gox.
The price of one Bitcoin has collapsed to about $500 on a rival exchange, Slovenia's BitStamp, down from about $1,100 last December, according to Bitcoin tracker Coinstackr.com (story continues after Coinstackr chart).
The value of one bitcoin fell by 28% over two hours on Thursday morning, before settling into its more normal pattern of rapid large price swings in both directions.
On the date of the album's launch, one bitcoin was worth $657.
