Grokking Bitcoin front-matter.adoc ch01-introduction-to-bitcoin.adoc ch02-hash-functions-and-signatures.adoc ch03-addresses.adoc ch04-wallets.adoc ch05-transactions.adoc ch06-the-blockchain.adoc ch07-proof-of-work.adoc ch08-peer-to-peer-network.adoc ch09-transactions-revisited.adoc ch10-segregated-witness.adoc ch11-bitcoin-upgrades.adoc app1-bitcoin-cli.adoc app2-answers.adoc app3-web-resources.adoc