So, I've been doing my reading here, watching videos and trying to understand this world before I begin jumping in. Some questions that remain a little unclear to me, so I hope you can help Is there only one blockchain? Or is blockchain a concept? From my understanding there can be public and private blockchains e.g. UK Govt could have it's own medical blockchain, and Nationwide bank could set up it's own for banking. Wallets - Can a hardware 'cold' wallet contain currency from more than one source, or would it only keep, say, 100k example-coins? A nano ledger wallet cannot keep some coins (e.g. sia?) as it's not set up for it? I should not keep currency in exchanges - kraken, bitstamp Without a wallet, I cannot use services to change bitcoin into X How do I find/get a destination tag? Are they important? submitted by /u/tom_g_82 [link] [comments] Read More