> You brought up having to present a passport as if it were a requirement to using bitcoin
I'm not sure how you read, "a passport is required to use bitcoin" from "I've never had a bank ask me for a passport when opening a bank account". My point, which I substantiated with those /r/bitcoin posts, is that it's not unusual for a bitcoin exchange to ask for a copy of a customer's passport as part of their KYC procedures.
> One can deduce from the context that a passport is required to use bitcoin.
You deduced incorrectly. I'm saying that if the KYC system flags the recipient, for whatever reason, then they will likely be required to produce a passport.
http://www.reddit.com/r/Bitcoin/comments/246mlg/bitstamp_blo...
http://www.reddit.com/r/Bitcoin/comments/25jyf1/bitstamp_ive...
http://www.reddit.com/r/Bitcoin/comments/26c1y6/buying_bitco...
http://www.reddit.com/r/Bitcoin/comments/2renc7/why_dont_peo...
I could go on, all I did was search /r/bitcoin for the word "passport" and I was overflowing with results.