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1601  Bitcoin / Bitcoin Discussion / Re: Alternatives Like BTC Becomes Necessary As World Debt Reaches $253 Trillion on: January 19, 2020, 10:18:29 AM
As much as I like Bitcoin, I don't see it being a solution to the problem OP is referring to. If you don't deal with the monetary policy markers, nothing will change, ever. It's the same group of like-minded elite that's in charge. Something has to change there on a fundmental level. I do not see that happen with how much empirical evidence we have today.

bitcoin has never been a solution to anything. it is an option towards freedom that people can choose to use. and it has always been like this. the governments and the banks will remain in power and control the money printing and everything. in most cases there is a lot of corruption involved in it too. in this corrupted world bitcoin is the way out but it is not going to solve that corruption.
1602  Economy / Speculation / Re: Bitcoin is on its best start-of-year streak since 2012 on: January 18, 2020, 03:35:09 AM
i really don't like this type of categorizing the rises based on months like end of the year, start of the year, Chinese new year, summer,... they are all meaningless because the market doesn't really care about WHEN it is. we have seen many times that people expected drops by the end of the year but the price went up instead. the same thing is for the start of this year. we were in a bull market already and after a little bit of pause due to holidays price is rising back up again after the 300%+ that it already had last year.
1603  Bitcoin / Development & Technical Discussion / Re: Digital signature in Bitcoin on: January 18, 2020, 03:19:41 AM
For example could you show me how SIGHASH works for this kind of transaction?


Thanks,

there are 2 transactions in this picture and there are 6 total SIGHASHes that could be used to sign a transaction and since each input can have its own different SIGHASH that makes it 24 different ways to sign the 2 transactions in that picture with total of 4 inputs!
please be more precise about which one you want to see?
1604  Bitcoin / Development & Technical Discussion / Re: Digital signature in Bitcoin on: January 16, 2020, 04:42:44 AM
i think you may have been thrown off because of SIGHASHes and you may benefit from looking at what a transaction looks like.
a transaction is like this:
Code:
version
txin_count(3)
   [input_0]:txid | index | scriptsig | sequence
   [input_1]:txid | index | scriptsig | sequence
   [input_3]:txid | index | scriptsig | sequence
txout_count(2)
   [output_0]:amount | scriptpub
   [output_1]:amount | scriptpub
locktime
forget about SegWit and SIGHAH for now.

to sign or verify the signature of this transaction you look at each input. they all have a "reference" to what they are spending. using the txid and the index you can find that transaction. so lets say the input_0 is this (from this transaction:
Code:
txid= 7f920a59108b7434a77af8c392a940e51d50db998280969ab80d9428a80d8448
index = 1
now the node is going to get the transaction that is being spent by having its hash and then look among its txouts at index 1 and it can get this:
Code:
OP_DUP OP_HASH160 <0148352b01e7b93c6af2aa134d3a59a1bfbf3fd8> OP_EqualVerify OP_CheckSig
now that you have the scriptpub you can start serializing the transaction in a way to be hashed and then signed.
the way it works for this type is to set the scriptsig of the txin you are signing to this scriptpub and setting every other scriptsig to empty.

up to this point is the same steps used no matter what the SIGHASH is.

now if the SIGHASH is ALL you sign the entire thing.
Code:
version
txin_count(3)
   [input_0]:txid | index | scriptpub | sequence
   [input_1]:txid | index | empty | sequence
   [input_3]:txid | index | empty | sequence
txout_count(2)
   [output_0]:amount | scriptpub
   [output_1]:amount | scriptpub
locktime

if it is NONE then you sign everything except outputs:
Code:
version
txin_count(3)
   [input_0]:txid | index | scriptpub | sequence
   [input_1]:txid | index | empty | 0
   [input_3]:txid | index | empty | 0
txout_count(0)
locktime

if it is SINGLE then you sign a single "input" (your own input) and the outputs
Code:
version
txin_count(3)
   [input_0]:txid | index | scriptpub | 0
   [input_1]:txid | index | empty | 0
   [input_3]:txid | index | empty | 0
txout_count(1)
   [output_0]:amount | scriptpub
locktime

and if any of the above has ANYONECANPAY only one input is being signed. there are also some more details that i skipped.

now that you are done with first input (input_0) you move to the next input (input_1) and repeat the same thing for that:
look at its txid:index, get the scriptpub, build the serialization, hash, sign/verify.
for example for ALL:
Code:
version
txin_count(3)
   [input_0]:txid | index | empty | sequence
   [input_1]:txid | index | scriptpub | sequence
   [input_3]:txid | index | empty | sequence
txout_count(2)
   [output_0]:amount | scriptpub
   [output_1]:amount | scriptpub
locktime
1605  Economy / Speculation / Re: Craig Wright's Court Battle - Bitcoin on: January 15, 2020, 05:04:16 PM
Do you think that bitcoin price was affected about this court? Or it was just a coincidence that bitcoin priced approximately 8% just at the same day of that court.

bitcoin is rising most of the times and if you look around each time it makes a rise you can always find some coincidence around that you can link it to the rise. last week people were getting excited about Middle East war and were claiming the rise was because of that, as soon as that ended price still went up. and as soon as this bullshit with scammers end price will still go up.
1606  Economy / Trading Discussion / Re: Buying bitcoin and several altcoins on: January 15, 2020, 04:22:48 PM
The time this thread was launched, the price for bitcoins as well as altcoins was comparatively low and from that time until now, if anyone made any trade than he/she already had profits. This actually was a mid-range for all the traders and i think most of such traders already might have made profits.

the thread isn't that old, it is about 20 days ago and in that time only bitcoin has made some small moves upward other than that we saw a lot of altcoins dump partly because of the bitcoin price rise and partly because of the end of the year that people didn't want to leave their money in altcoins so they cashed out.
1607  Bitcoin / Development & Technical Discussion / Re: Digital signature in Bitcoin on: January 15, 2020, 04:17:45 PM
in a transaction like this A->B->C, B's unlocking script has the sign but does he signs A's outputs or new generated B's output?

a transaction is like this:
Code:
input1
input2
...
inputn
Code:
output1
output2
...
outputm

each input has a reference inside of it (called outpoint which is a hash and an index) which determines which locking script they use. when you are signing that input you first get that script and use it in producing the signature while setting every other input's script to empty.

different SIGHASH doesn't change this at all. the only thing they change is which parts of the entire transaction structure is being signed.
for example if it is SIGHASH_SINGLE then you still do the same thing as i said but instead of hashing the entire transaction you hash the inputs and one output (it is a little more complicated than that).
1608  Bitcoin / Bitcoin Discussion / Re: Craig Wright provided the list of addresses that contains 1.1 million btc on: January 15, 2020, 03:57:19 PM
craig-wright-provides-list-of-16404-bitcoin-btc-addresses-that-contain-95-bln-is-he-real-satoshi

giong to a website like this: https://bitinfocharts.com/top-100-richest-bitcoin-addresses.html and copying a bunch of addresses from there into a text doesn't make that person Satoshi. anybody can do that since bitcoin blockchain is a public ledger Smiley
if he owned even a single output worth a Satoshi dated in early years i am sure he would have already shown in back when he was publicly ridiculed for trying to forge a signature...
1609  Bitcoin / Bitcoin Discussion / Re: End to the Craig Wright FUD in less than a month - 3rd Feb 2020 on: January 14, 2020, 02:55:42 PM
Could this be responsible for BitcoinSatoshiVision's pumping machine? Well, if this is the cause, after Feb2 expect a quickly reversal of price and I wish a safe trip.

it is a strong possibility as the whales foresee the dumps in the near future which could be why they are currently pumping this shitcoin hard. with the pump there is always an increased volume coming in which helps the whales dump their bags easier into a more packed order book.
1610  Bitcoin / Bitcoin Discussion / Re: End to the Craig Wright FUD in less than a month - 3rd Feb 2020 on: January 14, 2020, 02:44:01 PM
Quote
End to the Craig Wright FUD in less than a month

keep dreaming... a scammer such as Craig Wright is not going to give up scamming people that easily. don't confuse him with regular scammers, any normal person would have ran away after the big embarrassment in first day of his scam when the signature turned out to be fake.
he not only stayed but also increases his scam scale and even created a shitcoin.
1611  Economy / Speculation / Re: Can bitcoin touch 9k USD next month? on: January 14, 2020, 02:32:53 PM
it is not possible to predict bitcoin at times like this. the market is divided into fearful people who are waiting to FOMO in and the whales who are accumulating so it can take longer or shorter. all i can predict is that we are going to see a big jump as soon as the rise starts which is why i don't really care about $9k but i am trying to guess which price we stop at after reaching $9k. maybe $15K?


the correct board to post topics like this and make discussions is the speculation board. please move the topic there (there is a button you can see at the bottom of this page called move topic). it seems to be moved now.
1612  Bitcoin / Bitcoin Discussion / Re: Halving: Does it places an important role in the crypto market or not? on: January 14, 2020, 02:11:02 PM
And I believe it so, in fact, the long-term effect of halving to the market price will help the traders to have a sustainable market gain and for the economic growth of crypto.

sorry to disappoint but that is not what halving does.
you can simply take a look at hundreds of altcoins that had halvings and crashed hard because of it. the latest was one of the biggest altcoins called litecoin!
your mistake is that you are generalizing what happens to bitcoin, to the entire market. the fact is that bitcoin price rises a lot due to halving only because there is an increasing demand for bitcoin in which case the halving only acts as the catalyst not the cause.
1613  Bitcoin / Development & Technical Discussion / Re: Start point on: January 14, 2020, 08:57:24 AM
Thank you the answer,
But building a new wallet even with an advanced GUI is usable?
Can you link me a guide for it please?

you're welcome.
i think it is useful because although we have very good wallets but many of them suffer from a lack of user friendly interface. take bitcoin core for example. it is capable of doing a lot of things but 90% of them happen through using the command line and that is not user friendly.

you may not want to start from scratch and it may be better that you contribute to an existing project and help improve that. if you look at the code of these big projects you can gain a lot of experience that guides won't give you in my opinion.
1614  Bitcoin / Bitcoin Discussion / Re: The biggest crypto mystery still revolves around Satoshi’s identity on: January 13, 2020, 01:34:38 PM
nowadays Satoshi's identity has turned into a source of income for different people! from these low quality website that keep creating clickbaits to the big scammers like CSW everyone is trying to make some money from it!
the worst part is that there has not been anything new for at least half a decade. everything is the repetition of all that has been rehashed a million times.
1615  Bitcoin / Bitcoin Discussion / Re: We are giving too much attention on the halving on: January 13, 2020, 01:24:59 PM
well when we get more adoption of bitcoin as a currency all over the world it means there is an increased demand for bitcoin then with something like halving that is cutting the fresh coins entering the market by half we can definitely expect a gigantic price rise equal to that same supply cut. that means a lot of speculators will also be attracted to bitcoin. it is not necessarily a bad thing though as that is also one type of adoption. as long as the real purpose isn't forgotten thing would be fine.
1616  Bitcoin / Development & Technical Discussion / Re: Start point on: January 13, 2020, 01:10:31 PM
it is mostly up to you where to start and how much to learn. being a "developer" covers such as wide range of topics from front end developers to backend and everything in between.
for instance you can learn pretty basic stuff about bitcoin and build a wallet using a library or just an advanced GUI over bitcoin core (something like Armory for instance).
so you should first decide what goal you want to reach first. what do you want to end up building?
1617  Bitcoin / Bitcoin Discussion / Re: Bitcoin: The Social Phenomenon on: January 13, 2020, 06:06:34 AM
the characteristics of bitcoin is what gives it value, not what it cost was to mine it. Of course, there is less incentive to mine it if the market value goes under production value. But the sole fact that there is demand at all, means it is useful to enough people to give it that value.

exactly. the only reason why people started looking at irrelevant things to speculate the value is that they couldn't predict the bitcoin price so they needed things like hashrate that could be measured.
but what they forget is that miners are workers that are getting paid. if the economy is good their check is fatter so more workers are sign up for employment and if the economy is bad their check shrinks so some of them quit their job.
in the end the economy is there. bitcoin continues providing its utilities whether the employees are getting paid a lot or a little.
1618  Economy / Speculation / Re: Brace yourselves, there is FOMO coming on: January 13, 2020, 05:30:13 AM
I think people have learned by now if the FOMO is just another trap or not, remember 2017 is a big lesson in FOMO, and if people are not being careful, chances are history is going to repeat itself and people will get victimize again by FOMO,  investors especially those who are newbies should only invest what they can afford to invest and do not fall for FOMO, always invest in the safe side.

you are confusing one sub-type of FOMO called bubble with FOMO in general. we have lots of different types of FOMO in bitcoin market, the end of the cycle FOMO that leads to the extremely exaggerated price at an ATH within a very short time is the bubble. and yeah it ends badly for a long time for those who enter then.

but other types of FOMO also exist. for example last year we saw multiple cases of it with 2 major ones. the most known one is when price suddenly jumped from $3800ish to above $5500 and then continued going up. entering there even in FOMO was the best decision anybody could make except for those who bought at the bottom.
1619  Other / Beginners & Help / Re: Crypto is not a get rich quick ponzi on: January 13, 2020, 05:15:15 AM
that is wrong. and it is a common mistake among newcomers too. what you said is only true about bitcoin not crypto in general. as a matter of fact a large number of altcoins are complete scams as it is evident from the past years' disappearance of hundreds of them specifically the ICO tokens that were the definition of a Ponzi scheme.
1620  Economy / Speculation / Re: Brace yourselves, there is FOMO coming on: January 10, 2020, 03:17:38 PM
Rather than the FOMO kicking in, I think it was the BOPNM....lol, or the "boredom of price not moving"

Everyone was expecting something to happen in December, another bull run like in 2013, 2017, or finally, the effects of the so much anticipated halving to show in the market orders. I've seen this around the forum and around other social media, everyone was expecting the price to go up a bit if not too late October levels.

FOMO, no! A small bump and now it is over.

FOMO, yes but a small FOMO. and it usually starts like this. you are correct that there is a boredom of nothing happening but that also means there are a lot of people with money waiting to buy in and 90% of them will only start panic buying when the price passes a certain higher level so that they can be sure there is no more drops!

in any case, i am both disappointed and excited about the current trend. despite all the FUD that has been trying to crash the market price is still staying around $8k (currently $8050) and seems like having a tendency to continue going up.
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