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11721  Economy / Speculation / Re: What is happening with Bitcoin? on: September 26, 2019, 07:26:04 AM
I believe it called adjustment of the price before the price can get up to a higher rate.

adjustment of the price or the correction that happens is usually smaller and a lot smoother than this. meaning the drop occurs over a longer period of time instead of being a sharp drop that (on the charts) looks completely vertical. these vertical declines are indicating panic sells and are usually kicked off when price goes below the stop loss that the bots have in place to sell immediately as it goes below that mark which then starts the subsequent sell offs.
11722  Other / Beginners & Help / Re: What is Coinbase Transaction? on: September 26, 2019, 06:45:52 AM
~
The term 'Virgin Bitcoins' is used very often.

not really. i have also never heard the term "virgin bitcoins" be used ever before that one company recently started using it and the news sties started copying the content (with this word in it). so if anything this term is something that was created recently and by one company and nobody even uses it any place else.
11723  Bitcoin / Bitcoin Discussion / Re: New bitcoin mining algorithm on: September 26, 2019, 06:34:46 AM

Yes! By the non-mining full nodes validating everything in the network.

thirdprize, full nodes order blocks from the miners, if they're invalid, they will be rejected. All the miner's work will then be wasted.

If a mining pool controlled 51% of the network, they will be able to put through a fake transaction from one address to another. This will pass validation as there is no double spend, no block errors and the nonce is valid. Eventually, by controlling 51% of the network, they will be able to produce the longest chain, thus making it technically valid.

Of course, the community can choose to thwart this by opting for a fork before the affected block, but this is another topic entirely.

that's not how bitcoin works!
it doesn't matter how much hashrate you own, even if you control 100% of it you still can not insert an invalid (fake) transaction in the actual blockchain that everyone else stores because it simply will be rejected right away by the rest of the network and you will be on your own, alone on a chain that you and you only think is valid.
11724  Bitcoin / Bitcoin Discussion / Re: New bitcoin mining algorithm on: September 26, 2019, 04:54:08 AM
ASICs mean a more centralized world of BTC where a few manufacturers and a few pools control all the income.  What is so great about that? 
in case you don't know "pools" created before ASICs because they have nothing to do with ASICs. a mining pool is simply a "place" where individual miners go to to share the work and share the reward. it doesn't matter with what you are doing the work, with an ASIC, a super computer or a decrepit Pentium II pc.

Satoshi designed it so anyone could mine and anyone could earn BTC.
now you are just putting words in Satoshi's mouth!
Satoshi designed bitcoin so that everyone could use bitcoin, how they acquire it is on themselves. bitcoin is not some sort of charity money give away to give money to the poor for free or easy!
11725  Bitcoin / Project Development / Re: Bitcoin Visual private key generator on: September 26, 2019, 04:31:19 AM
1) Flip the coin 256 times and write down each outcome by filling the cell of the 16x16 square;
2) Use random, but with later manual intervention: received the filled square of the bits, manually change any cell you like to the opposite value, and do it manual changing as many times as you want.
3) Manually fill all the cells randomly chaning the cell and clicking the mouse to fill/unfill the cell.
4) Use visual patterns (visual in the context of bits presentation in the form of 16x16 square). This way could be done also for gift pusposes: for example draw a heart, generate the key with the address using this pattern, transfer some BTC to this address and present such key to the person you like.

it is interesting to "visualize" a private key in binary and also if you use the first method (coin flip) to create it but it is not a good idea to use it in any other way such as manual selecting the squares, using random button,... if the key is to be used for funds.

you also should add the warning to your site explaining the insecurity of the random function used, and warn about manual selection since people are never a good entropy source.

additionally i see a zip file link at the bottom. is your project open source? if it is, sharing it on GitHub and linking it there is a better idea.
11726  Bitcoin / Bitcoin Discussion / Re: If not a "store of value" or "medium of exchange" ... on: September 26, 2019, 04:09:05 AM
based on your comments it seems like you have never been affected by any of the "problems" that is why you don't see them and think there is no problem in first place. but there is. the banks screwing people over every day, governments have their hands in people's pockets, restricting them, controlling and censoring them, and a lot more. bitcoin simply solved a ton of such problems by simply being a decentralized currency. now i can send money from anywhere in the world to anywhere in the world without needing to jump through hoops or be restricted/blocked because of crazy governmental rules, sanctions,....
11727  Other / Meta / Re: Bumping changes on some boards on: September 25, 2019, 04:17:49 AM
Non-publicity of data

how about just a "bump counter"?
(i didn't see anybody suggesting this) it would be interesting to have this field on each topic and the new row added called "bumps" in the list of topics to both show the counter and give the ability to sort them with their total bumps.


i (super) bumped something yesterday for the first time and it has been staying on top for two days, i was very curious to know how many bumps that topic is receiving.
11728  Bitcoin / Wallet software / Re: Paper Wallets on: September 25, 2019, 03:49:03 AM
I'll have to give this some more thought.  I'm just trying to think of ways to make the wallet more secure without having to rent out a bank vault.

why are you trying to come up with your own unique way? are you an experienced cryptographer? if not then it is always a better idea to use the already tested encryption methods that have been proposed and are in use such as BIP38 (https://github.com/bitcoin/bips/blob/master/bip-0038.mediawiki) the result would look like this:
Code:
6PRWdmoT1ZursVcr5NiD14p5bHrKVGPG7yeEoEeRb8FVaqYSHnZTLEbYsU 
and since the encoding is the same Base58 (same characters) you could use crypto-steel to store it. but it will be a lot more secure since it is using strong encryption techniques (AES-256 using a stretched key).
11729  Economy / Speculation / Re: What is the cause of the current sharp drop, any fundamental? on: September 25, 2019, 03:23:40 AM
there is nothing natural about a movement that is this sharp whether it is a rise or a drop, that much is obvious. but whether this was manipulation that led to such a sharp drop or a panic sell is something we can never be sure of, and of course there is always a lot of traces of manipulation in this market since it is still small and filled with whales.

as for hashrate drop, i don't think that is the reason for this recent price drop. traders are not known to watch the hashrate for their decision making specially since a lot of other bigger drama is usually going on in the market like the current Bakkt and their Futures drama.
11730  Economy / Speculation / Re: Bitcoin's price dropped down to $9,500 today. Wanna know why? on: September 25, 2019, 03:09:33 AM
being "young" is not the main reason for the drop. having small market is the main reason and the reason for a small market (meaning exchanges that have order books that are NOT packed with orders) is that the exchanges that we use are not trustworthy so people are always afraid of using them. they prefer to either stay away from trading there or to never leave an open order, instead withdraw their funds right away. that leaves the market open to manipulation and big swings whenever a large amount of buys or sells take place.
11731  Bitcoin / Bitcoin Technical Support / Re: Robust Testnet3 API on: September 24, 2019, 02:49:27 PM
(pushing txs, browsing utxos, etc).

how about using Electrum wallet?
it is a lightweight (SPV) client, it is up to date (meaning it supports SegWit) and works with TestNet. you can run it on any OS by adding the "--testnet" command at the end. on Windows open the properties window of the shortcut on your desktop, go to the Shortcut tab and add that command at the end of Target:
Code:
"C:\Program Files (x86)\Electrum\electrum-3.3.6.exe" --testnet

now you can create wallets, import keys, sign transactions, get your UTXO history, broadcast them,...

you can also always only contact the Electrum servers and use their communication protocol to fetch the necessary data you want (basically what Electrum does under the hood). although that would be harder and more time consuming. here is the protocol documentation: https://electrumx.readthedocs.io/en/latest/protocol.html
11732  Bitcoin / Development & Technical Discussion / Re: Blockchain Demonstration [Python, JS] on: September 24, 2019, 02:42:54 PM
that can help beginners

for that i think you need to work more on the explanation part and start by explaining how to run this tool step by step and on each step you should try explaining what exactly is happening. for example
- what is a transaction (parts that it has, the role of previous transaction, scripts,...)
- what is the signature
- what are public/private key pairs
- what happens when you broadcast the signed tx
- how a block is mined
- how do nodes communicate with each other.

there is also something odd about the keys in your screenshot, from the code it seems like you are using RSA. why use that instead of Elliptic Curve DSA since it is more popular?
also are these keys encoded using DER? you might want to specify the encoding that your code accepts.

also this following part doesn't sound correct:
Quote
The blockchain is for authorizing payments of a cryptocurrency between two peers without the need for a centralized 3rd party approving of the transaction.
blockchain is only for "storing" the transaction history and "chain" or link them together using cryptography and in coins such as bitcoin by doing "work" hence the term proof of work. so blockchain only works as the public immutable ledger that only grows. the "authorization" happens by the user when they provide a digital signature.
11733  Bitcoin / Bitcoin Discussion / Re: bitcoin version 1, addresses space 2^160 on: September 24, 2019, 09:20:54 AM
an address is the hash of the public key where as those outputs
i feel almost every words of you has some hidden meaning 

can we go address > public key ?

what i meant was to point out that there is a difference between addresses and scripts. address is the human readable encoding of some of the most popular scripts, in other words we have more scripts than addresses. example is the P2PK scripts that were mentioned, another would be those with OP_CSV or other OP codes in them.

as for second part, no we can not go from address to public key since hash algorithms used in bitcoin are one way functions.
11734  Economy / Speculation / Re: Bakkt is coming: will this be biggest crypto week ever and set off bull run? on: September 24, 2019, 05:01:57 AM
it seems like for these couple of days that Bakkt launch is still fresh there is more panic in the market than anything else possibly it is either because of the fact that weak hands think it is the end of the hype and expected drop so they panic sold before it happened and caused this drop or their panic is because it is Futures and they were scared of its effects on price. whatever the reason we are seeing the panic take its toll on the price but still incapable of pushing it down below the previously tested bottom.
11735  Bitcoin / Bitcoin Discussion / Re: bitcoin version 1, addresses space 2^160 on: September 24, 2019, 04:01:43 AM
i have this question when exactly the year and month we start using 2^256?

the year that we succeed at optimizing the algorithm for nested hash function {RIPEMD160(SHA256)} and find a collision. nobody can predict when that can happen, estimating it would be at least another 50 years.

~
am i understand you correctly!
all bitcoin addresses use 2^160 160bits and the only exception 2009 and 2010 that use 2^256 Embarrassed
an address is the hash of the public key where as those outputs from first year(s) were the public key itself.

There's no change of "bitcoin version 1", assuming you're talking about Bitcoin address which have prefix 1.

Bech32 address format have more character count, but according to https://bitcoin.stackexchange.com/a/69554 it also uses RIPEMD-160 which means current address space is still 2^160, but only with different format/encoding. CMIIW.
P2WPKH scripts are using the same RIPEMD160(SHA256(pubkey)) digests so they are the same 20 bytes (160 bits). P2WSH scripts use SHA256(script) digest so they are 32 bytes (256 bits) and both of them use Bech32 encoding to represent the corresponding "address".
11736  Bitcoin / Bitcoin Discussion / Re: New bitcoin mining algorithm on: September 24, 2019, 03:44:52 AM
Contrary to some's belief, it's actually good that bitcoin mining is not "ASIC-proof".

well there is no such thing as "ASIC-proof". this was a term invented by altcoins that wanted to have an excuse to advertise and then pump themselves. they first started exaggerating bitcoin being mined by ASICs situation and then fooled people into thinking their algorithm can not be optimized by using ASICs.

what they call "ASIC-proof" is actually "SHA256-ASIC-proof", in other words it can not be mined by the same ASICs that bitcoin uses but new ASICs can be created to mine that particular algorithm.
11737  Bitcoin / Bitcoin Discussion / Re: Bakkt has traded only 7 BTC so far on: September 24, 2019, 03:36:11 AM
doesn't "so far" in this context means the past 4 hours? since it seems like Bakkt just started running their market. and if that is true, then 7BTC/4 hour is not such a small figure for something that is not even a day old. that is $70k we are talking about not a small amount of money.

It has gone up to 18BTC in 7 hours. 2.5BTC/h.
And, no, it's a ridiculously low amount for all the hype that was chanted for almost a year about the whole thing, they are close to the average Wallmart sales per day.  Grin And if we're at a point of comparing the most awaited event, the thing that was supposed to drive in "institutional" money to BTC to a Wallmart...

haha, yeah but still ignoring all that hype, i'd say it has grown nicely over the past 24 hours and the volume seems to be constantly increasing. i don't think "institutional" investors are waiting to jump in with their head first just because Bakkt started.
on a side note, it is interesting how there is a big sell pressure over the past 24 hours on the actual market pushing the price down though.
11738  Bitcoin / Bitcoin Discussion / Re: What if SOUTH KOREA SHUTTINGDOWN BTC??? on: September 23, 2019, 06:50:03 AM
Bitcoin is facing some hard and complicated situation these past few weeks.

since when a currency having a stable price is considered "hard and complicated situation"?

What do you think is the big and huge effect and outcome if South Korea beyond doubt to plan and decide to shut it downs the crypto?

i think you may benefit from familiarizing yourself with the concept of being "decentralized". it is not just a word.

I don't entirely agree with your viewpoint here! South Korea is the third largest country in terms of transaction volume, just behind Japan and USA. If (in worst case) South Korean government decides to ban all crypto exchanges and declare it illegal, a huge impact will be seen in the market during the exit period. Even though the impact will be temporary, there's no way we can escape that! No matter how decentralized the market is!

OP is talking about "shutting down" bitcoin not causing some short term price drama in the market. but yeah if we are going to speculate about a hypothetical situation then you are right but this topic needs to be in speculation board and the title must change! but i have a feeling that OP is not going to do that Wink
11739  Bitcoin / Bitcoin Technical Support / Re: Help me to recover funds from 18 phrases on: September 23, 2019, 06:12:59 AM
I haad read forums to understand that if you have your phrases with you you can always recover your funds. Is this saying wrong in my case ?

not exactly.
usually when people talk about these "phrases" they are referring to mnemonic that are used according to a standard called BIP39. but the problem is that not all wallets stick to that standard and in early years (like old versions of blockchain.info wallet) this standard wasn't around or was not popular so they used different techniques.
this means as long as you have the "phrase" and have access to the same wallet, you should be able to recover your funds. if you don't have access to the wallet or if the wallet is bad at keeping backward compatibility, then you have to go through the source code of that wallet to figure out how they used to go from the phrase to a private key. i don't think anybody knows this about early versions of blockchain.info wallets!

so your only option is to contact their support and use the links that were posted to try and recover your wallet.
11740  Economy / Trading Discussion / Re: Bloomberg Terminals on: September 23, 2019, 06:04:31 AM
don't be overwhelmed, most of what you have seen are just gadgets and a regular trader doesn't really need any of them to be successful in making consistent profit. most of them are only for special trading strategies and to maximizing the control and profit. otherwise they neither guarantee profit nor even make it possible. the main usage i believe is for those who are hard core traders and also want the communication feature to connect with other brokers. i don't think you find it useful for bitcoin market.
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