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Added blockcypher explorer and added link to Alice's transaction

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Andreas M. Antonopoulos 2016-02-03 22:22:15 -06:00
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@ -16,12 +16,13 @@ image::images/msbt_0201.png["Bitcoin Overview"]
Each example in this chapter is based on an actual transaction made on the bitcoin network, simulating the interactions between the users (Joe, Alice, Bob and Gopesh) by sending funds from one wallet to another. While tracking a transaction through the bitcoin network to the blockchain, we will use a((("blockchain explorer websites"))) _blockchain explorer_ site to visualize each step. A blockchain explorer is a web application that operates as a bitcoin search engine, in that it allows you to search for addresses, transactions, and blocks and see the relationships and flows between them. Each example in this chapter is based on an actual transaction made on the bitcoin network, simulating the interactions between the users (Joe, Alice, Bob and Gopesh) by sending funds from one wallet to another. While tracking a transaction through the bitcoin network to the blockchain, we will use a((("blockchain explorer websites"))) _blockchain explorer_ site to visualize each step. A blockchain explorer is a web application that operates as a bitcoin search engine, in that it allows you to search for addresses, transactions, and blocks and see the relationships and flows between them.
Popular blockchain explorers include: ((("blockchain.info website")))((("blockexplorer.com")))((("blockr.io website")))((("insight.bitpay.com"))) Popular blockchain explorers include: ((("blockchain.info website")))((("blockexplorer.com")))((("blockr.io website")))((("insight.bitpay.com")))((("blockcypher.com")))
* http://blockexplorer.com[Bitcoin Block Explorer] * https://blockexplorer.com[Bitcoin Block Explorer]
* http://blockchain.info[Blockchain info] * https://live.blockcypher.com[BlockCypher Explorer]
* http://insight.bitpay.com[insight] * https://blockchain.info[blockchain.info]
* http://blockr.io[blockr Block Reader] * https://insight.bitpay.com[BitPay Insight]
* https://blockr.io[blockr Block Reader]
Each of these has a search function that can take a bitcoin address, transaction hash, block number, or block hash and retrieve corresponding information from the bitcoin network. With each transaction or block example, we will provide a URL so you can look it up yourself and study it in detail. Each of these has a search function that can take a bitcoin address, transaction hash, block number, or block hash and retrieve corresponding information from the bitcoin network. With each transaction or block example, we will provide a URL so you can look it up yourself and study it in detail.
@ -75,12 +76,19 @@ Alice uses her smartphone to scan the barcode on display. Her smartphone shows a
In the following sections we will examine this transaction in more detail. We'll see how Alice's wallet constructed it, how it was propagated across the network, how it was verified, and finally, how Bob can spend that amount in subsequent transactions. In the following sections we will examine this transaction in more detail. We'll see how Alice's wallet constructed it, how it was propagated across the network, how it was verified, and finally, how Bob can spend that amount in subsequent transactions.
[NOTE] [NOTE]
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The bitcoin network can transact in fractional values, e.g., from milli-bitcoins (1/1000th of a bitcoin) down to 1/100,000,000th of a bitcoin, which is known as a((("satoshis","defined"))) satoshi. Throughout this book we’ll use the term “bitcoin” to refer to any quantity of bitcoin currency, from the smallest unit (1 satoshi) to the total number (21,000,000) of all bitcoin that will ever be mined.(((range="endofrange", startref="ix_ch02-asciidoc2"))) The bitcoin network can transact in fractional values, e.g., from milli-bitcoins (1/1000th of a bitcoin) down to 1/100,000,000th of a bitcoin, which is known as a((("satoshis","defined"))) satoshi. Throughout this book we’ll use the term “bitcoin” to refer to any quantity of bitcoin currency, from the smallest unit (1 satoshi) to the total number (21,000,000) of all bitcoin that will ever be mined.(((range="endofrange", startref="ix_ch02-asciidoc2")))
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You can examine Alice's transaction to Bob's Cafe on the blockchain, using a block explorer site:
.View Alice's transaction on https://blockexplorer.com/tx/0627052b6f28912f2703066a912ea577f2ce4da4caa5a5fbd8a57286c345c2f2[blockexplorer.com]
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https://blockexplorer.com/tx/0627052b6f28912f2703066a912ea577f2ce4da4caa5a5fbd8a57286c345c2f2
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=== Bitcoin Transactions === Bitcoin Transactions