Removed all references to blockexplorer.com, as they are trying to pu…

…sh Bitcoin Cash propaganda with a modal window. Confusing for newbies and inappropriate for a textbook. GTFO bitcoinbook#511

ch02.asciidoc

@@ -18,7 +18,6 @@ image::images/mbc2_0201.png["Bitcoin Overview"]
 
 ((("Bitcoin Block Explorer")))((("BlockCypher Explorer")))((("blockchain.info")))((("BitPay Insight")))Popular blockchain explorers include:
 
-* https://blockexplorer.com[Bitcoin Block Explorer]
 * https://live.blockcypher.com[BlockCypher Explorer]
 * https://blockchain.info[blockchain.info]
 * https://insight.bitpay.com[BitPay Insight]
@@ -258,7 +257,7 @@ Transactions are added to the new block, prioritized by the highest-fee transact
 
 ((("candidate blocks")))((("blocks", "candidate blocks")))Alice's transaction was picked up by the network and included in the pool of unverified transactions. Once validated by the mining software it was included in a new block, called a _candidate block_, generated by Jing's mining pool. All the miners participating in that mining pool immediately start computing Proof-of-Work for the candidate block. Approximately five minutes after the transaction was first transmitted by Alice's wallet, one of Jing's ASIC miners found a solution for the candidate block and announced it to the network. Once other miners validated the winning block they started the race to generate the next block.
 
-Jing's winning block became part of the blockchain as block #277316, containing 419 transactions, including Alice's transaction. The block containing Alice's transaction is counted as one "confirmation" of that transaction. 
+Jing's winning block became part of the blockchain as block #277316, containing 419 transactions, including Alice's transaction. The block containing Alice's transaction is counted as one "confirmation" of that transaction.
 
 [TIP]
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ch09.asciidoc

@@ -84,11 +84,8 @@ You can search for that block hash in any block explorer website, such as _block
 
 https://blockchain.info/block/000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f
 
-https://blockexplorer.com/block/000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f
-
 Using the Bitcoin Core reference client on the command line:
 
-
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 $ bitcoin-cli getblock 000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f
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