在电车上和朋友聊天，突然意识到一个很重要的事情：虽然是带着 settle down 心情来的柏林，但也要带着游客的心态多多探索城市。
毕竟这个世界上没有哪座城市比柏林更适合流亡者 —— 柏林是博物馆之城，是废墟之城，是幽灵无时无刻不漂浮在灰青色天空下的记忆之城。柏林对自由的极致追求，也是对失去、离散，以及那些难以愈合伤口的复仇。柏林是精神分裂的。
https://mp.weixin.qq.com/s/jzfBas0wCAk10mbvh-BaQg
BY hayami's blog｜日常人间观察
Telegram has no known backdoors and, even though it is come in for criticism for using proprietary encryption methods instead of open-source ones, those have yet to be compromised. While no messaging app can guarantee a 100% impermeable defense against determined attackers, Telegram is vulnerabilities are few and either theoretical or based on spoof files fooling users into actively enabling an attack.
Most people buy Bitcoin via exchanges, such as Coinbase. Exchanges allow you to buy, sell and hold cryptocurrency, and setting up an account is similar to opening a brokerage account—you’ll need to verify your identity and provide some kind of funding source, such as a bank account or debit card. Major exchanges include Coinbase, Kraken, and Gemini. You can also buy Bitcoin at a broker like Robinhood. Regardless of where you buy your Bitcoin, you’ll need a digital wallet in which to store it. This might be what’s called a hot wallet or a cold wallet. A hot wallet (also called an online wallet) is stored by an exchange or a provider in the cloud. Providers of online wallets include Exodus, Electrum and Mycelium. A cold wallet (or mobile wallet) is an offline device used to store Bitcoin and is not connected to the Internet. Some mobile wallet options include Trezor and Ledger.
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