Charles Stross wrote the first work of fiction to mention bitcoin...and then removed it.

I read a post that said that Charles Stross's Neptune's Brood was the first work of fiction to mention bitcoin. This is confirmed in a 2015 version of the Wikipedia page about bitcoin where it says:

In science fiction novelNeptune's Brood by Charles Stross a modification of bitcoin is used as the universal interstellar payment system. The functioning of the system is a major plot element of the book.

There is also a post on the economics blog, Overcoming Bias, that provides actual quotes where Stross mentions bitcoin in the book.

Slow money is a medium of exchange designed to outlast the rise and fall of civilizations. It is the currency of world-builders, running on an engine of debt that can only be repaid by the formation of new interstellar colonies, passing the liability ever onward into the deep future. … By design the slow money system is permanently balanced on the edge of a liquidity crisis, for every exchange between two beacons must be cryptographically signed by a third party bank in another star system: it take years to settle a transaction. It’s theft-proof too – for each bitcoin is cryptographically signed by the mind of its owner. … Suppose I wish to hire you – in another star system – to loan me a copy of your soul as indentured labor for a decade or two. …

So, you can imagine my excitement when, after a longer than expected wait, this book arrived in the mail and I read it.

First off, I'll say that it's a pretty great read and I highly recommend it. I've read one other book by Stross (Accelerando) and Neptune's Brood is full of the same weird twists and turns of futuristic thinking.

But...my copy doesn't have any bitcoin in it. (see picture)

I have the 2014 Ace mass market edition and every instance of the word bitcoin has been replaced with "cryptocoin" (or in one instance "cryptocurrency").

I've read that Stross is not exactly a fan of bitcoin, but the best explanation I can find is this comment of his from a Hacker News thread:

1. Neptune's Brood is more heavily based on David Graeber's work on Debt (notably Debt: The First 5000 years).

1a. If you feel inclined to read Neptune's Brood, I've got one big regret: I wrote it circa 2010-11, before BitCoin really took off in the public eye, and used the term "bitcoin" for a not-like-our-BtC-honest cryptocurrency. (If I'd known BtC was going to take off that way the year the book came out, I'd have come up with a different name.)

1. Paul Krugman is a cool person to go drinking with in a pub :)

I guess he asked his publishers to make the change for the mass market edition (the 2013 Kindle edition may be the only one that actually has the word "bitcoin" -- although I don't know about the 2013 hardcover).