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181  Other / Beginners & Help / Re: [RESOURCES] Free bitcoin/blockchain/finance eBook. on: April 11, 2020, 12:16:21 PM
Can anyone share links to two books: Mastering Bitcoin; Mastering Ethereum, on github, please.
Here you go: https://github.com/bitcoinbook/bitcoinbook/blob/develop/book.asciidoc and https://github.com/ethereumbook/ethereumbook/blob/develop/book.asciidoc.

Good group. I have read most of them. It is good for anyone who wants to learn more about economics, money, and cryptocurrencies.
I am more interested in audiobooks, where I can hear them while driving when drinking coffee or anywhere, do you have any compilation of audiobooks? Or do you know a reliable source for it?

I do not know the rest of the people, but I prefer audio and video. I hope you will refer to some channels on YouTube as well.
Audiobooks are quite different from ebooks. It takes a lot more time and effort to produce an audio file and hence, most of audio books exist under fee-paying forms. So far, Audible, Audiobooks and Scribd are some of the most complete and qualified providers for this kind.
182  Other / Beginners & Help / Re: [RESOURCES] Free bitcoin/blockchain/finance eBook. on: April 10, 2020, 07:41:53 PM
Although there were a lot of books relating to bitcoin already but I still would like to recommend Bitcoin and Cryptocurrency Technologies by Arvind Narayanan, Joseph Bonneau, Edward Felten, Andrew Miller and Steven Goldfeder (Princeton Uiversity). As far as I can tell, this is one the most comprehensive academic textbook on bitcoin and blockchain, along with some Andreas Autonopolous' masterpieces.

Bitcoin and Cryptocurrency Technologies provides clear and well-structured explanations on all technical matters, especially in first 5 chapters. The rest of the book is less techinique-biased but interesting and useful. The only downside is that some content/information was a bit out dated because of the publish year was in 2015.

Regarding finance book, it's a regret not to mention The Richest Man in Babylon by George S. Clason. Similar to Rich Dad Poor Dad, it's old but gold. Principles mentioned in the book are quite simple but you'll find it not easy to make them habits. The sooner you practice those principles, the sooner you get reward. This book is excellent for young people.  
183  Other / Beginners & Help / Re: Bitcoin Whitepaper- a MUST read for all and a little merit giveaway on: April 09, 2020, 12:33:00 PM
I will make a question as well:

What are SPV wallets and why are they important? Best and complete answer 3 merits.
In section 8 of the whitepaper, Satoshi talked about Simplified Payment Verification (SPV):
Quote
It is possible to verify payments without running a full network node. A user only needs to keep a copy of the block headers of the longest proof-of-work chain, which he can get by queryingnetwork nodes until he's convince he has the longest chain, and obtain the Merkle branchlinking the   transaction to the block it's timestamped in. He can't check the transaction forhimself, but by linking it to a place in the chain, he can see that a network node has accepted it,and blocks added after it further confirm the network has accepted it.

From this, SPV wallets can be defined as those wallets that download a small, specific part of blockchain only but still make sure your transactions in block and maintain security (less secured than running a full node, of course). This kind of wallet is important because they're an ideal option for portable devices like smartphones.
184  Other / Beginners & Help / Re: Bitcoin Whitepaper- a MUST read for all and a little merit giveaway on: April 09, 2020, 09:58:54 AM
Question 4.
In the main body of the text - What is the ‘additional firewall’ that Satoshi mentions ?
A new key pair
185  Economy / Speculation / Re: Wall Observer BTC/USD - Bitcoin price movement tracking & discussion on: April 05, 2020, 05:47:43 AM
[...]

Sadly this "proxy ban" is true. There were some topics talked about this and there was some explanation about "evil point":
When you register, the IP that you used when you submitted the registration form is used to calculate your evilness. The more frequently this IP or its neighbors were banned, the more evil is associated with your account. The amount of evil associated with an IP decays slowly over time, but the amount of evil associated with an account does not. You must pay or be manually whitelisted to enable posting on one of these "banned" accounts.

Here are some stats:

Evil% new users
053
0-135
1-104.4
10-200.80
20-502.2
50-1001.3
100+2.9

Currently each unit of evil requires a payment of 4023 satoshi. You only need to pay something if you have 1 or more, though.

Try registering another account in another IP address/PC is the solution if you don't want to pay fee.
186  Other / Beginners & Help / Re: an important reminder : accumulate bitcoin. on: April 05, 2020, 05:16:11 AM
[...] accumulating btc for the next 20 years is my ultimate  goal.
I am not sure if you're serious on this but 20 years is 1/4 life time to talk about. Imagine if you were an early bitcoin adopter and had a bunch of bitcoins since 2013 or 2014. Could you restrain yourself from cashing out when bitcoin reached ATH in late 2017? So many things can change in 20 years. Yahoo, Nokia don't even need the exact amount of time to become a part of history. I'm a bitcoin lover but I'm not even sure if bitcoin could remain its stance in next 20 years.

[...] or someone may do it for their children and grandchildren.
If you save gold to your children, you only need to tell them where you hide it. Saving bitcoin then don't forget to instruct them how to use Electrum in your testament.
187  Economy / Economics / Re: Capital preservation and investing during and after the COVID19 crisis on: April 01, 2020, 03:32:51 PM
So the rule would be: buy the dip or wait if there's no great opportunity now; it may come tomorrow.
Sound like a tip but it is too general. If everybody knew what is "dip" then who would be willing to buy at high? In the whole year 2018, today's dip is tomorrow's high. It's a lesson for current market situation. No one knows when the Covid-19 pandemic ends. Until that time, buying is a risky decision. A little technical analysis knowledge is needed in this case for short time frame trades. However, if you believe bitcoin will eventually reach USD 30k or 50k in 2021 or 2025 then buying now or tomorrow doesn't much matter.
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