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ch03.asciidoc

@@ -304,7 +304,7 @@ The payee will choose a truly random number `r` and produces the `sha256` of tha
 Note that an adversary should have no means of guessing or predicting `r`.
 Using a customer id or the hash of entries of the shopping cart together with a timestamp is not truly random and yields a security risk.
 The payment process of the Lightning Network is only secure if `r` is chosen completely randomly and is not predictable and as long as the Hash function cannot be inverted.
-We note that this is not an additional security assumption for Bitcoin as the security of the Hash function is currently what Bitcoin mining is built upon. 
+We note that this is not an additional security assumption for Bitcoin as the security of the Hash function is currently what Bitcoin mining is built upon.
 
 ==== Additional Meta Data
 Invoices can encode some other useful meta data.
@@ -314,7 +314,7 @@ As payment channels do not need to be publicly announced, the payee can also pro
 These hints can also be used for public channels to point to those channels on which the payee has enough inbound liquidity to actually receive the amount.
 In case the payer's Lightning node is not able to send the payment over the Lightning Network, invoices can also include a fallback address.
 We would however always recommend to open a new payment channel instead of doing an on chain transaction that does not add an additional payment channel.
-Invoices also have an expiry time so that the payee can delete the preimage after some time to free up space. 
+Invoices also have an expiry time so that the payee can delete the preimage after some time to free up space.
 
 === Delivering the payment
 
@@ -384,7 +384,7 @@ This includes which public payment channels are connecting nodes, which capacity
 
 ==== Onion routing
 
-If the sending node of a payment has selected a path that is supposed to be used to make the payment, the Lightning Network uses an onion routing scheme similar to the famous TOR-network. 
+If the sending node of a payment has selected a path that is supposed to be used to make the payment, the Lightning Network uses an onion routing scheme similar to the famous TOR-network.
 The routing scheme is called the SPHINX mixformat and will be explained in detail in a later chapter.
 For now we want to focus on its properties for the transport of payments which we also call onions.