Update ch01.asciidoc (#34)

Great start to the Unilateral Channel part of the history! I've suggested some stylistic updates to the first sentence.
5 years ago · 407178e04a
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@ -37,7 +37,7 @@ This is achieved by creating an economic incentive via a penalty mechanism if no
 Effectively the most recent update of the payment channel (encoded as a bitcoin transaction) becomes enforcable in this way. 
 // find / add sources for some of the claimes

-Already in July 2011 pseudonomous user hashcoin proposed on bitcointalk the usage of Timelocks via `nLockTime` to solve the custody problem of exchanges.
+In July of 2011, on the bitcointalk.org forum,  a pseudonomous user by the name of "hashcoin" proposed the usage of Timelocks via the `nLockTime` function of the bitcoin network to solve the custody problem of exchanges.
 The idea was to be able to quickly trade / sell Bitcoin without the necessity to send all the bitcoins to the exchange in the first place.
 Hashcoin effectively proposed what we would today call a unidirectional payment channel.
 With this mechanism a user A could fund a multisig wallet between A and another user B together with a timelocked transaction sending all Bitcoin Back to A.