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1  Economy / Exchanges / which bitcoin decentralized exchange has no trading fee? on: August 06, 2020, 05:23:44 AM
i have been searching for a bitcoin exchange that is decentralized but i i have three problems:

1. some of what i find are not actually decentralized!

2. 90% of these decentralized exchanges are actually token swaps. but i have no interest in tokens, i am looking for an actual exchange where i can trade cryptocurrencies. i am not interested in tokens

3. finally it is the fees. it makes no sense to me to pay fees to a centralized authority while using a decentralized exchange! and sometimes their fees are also too high...

can you introduce me to an actual decentralized cryptocurrency exchange that has no trading fees (everything happening P2P)?
2  Economy / Speculation / say welcome to THE FOMO... on: April 29, 2020, 04:21:34 PM
as we are getting closer to the halving and the recovery ends the price is starting to get warmed up for the big rises to start happening again.
on top of all that, we had all those panic sellers who are now left with a lot of fiat among them who were waiting for the dump to repeat so they can buy back.

here comes the FOMO...

surely enough within half a day price is nearly up $1000 and right now traffic to exchanges is increasing with crazy speed. the number of withdrawals are also so much that transaction fees have jumped up about 30 times...

where do you think the price will be by the end of halving event?
3  Bitcoin / Development & Technical Discussion / how is the witness version 1+ being evaluated right now? on: April 28, 2020, 04:19:35 PM
BIP141 says there isn't any interpretation apart from a "castToBool" but when i look at the code i can't find where this rule is enforced. all i see is that any other version bigger than 0 is simply skipped without any verifications.

it always returns true (ignoring the standard flag):
https://github.com/bitcoin/bitcoin/blob/master/src/script/interpreter.cpp#L1551-L1556
4  Bitcoin / Development & Technical Discussion / is there any research about UTXOs that are not spendable without a fork? on: April 08, 2020, 01:13:58 PM
every node keeps a database of the chain's state that contains the transaction outputs that are not yet spent. but among these outputs there are some that can not be spent unless a fork changes the script rules.
i am wondering whether anyone has ever looked into this to see what percentage of them are unspendable. i am guessing it shouldn't be that high due to standard rules.

edit: here are two examples to understand what i'm talking about:
txid:outindex
Code:
6d5088c138e2fbf4ea7a8c2cb1b57a76c4b0a5fab5f4c188696aad807a5ba6d8:0
OP_DUP OP_HASH160 0 OP_EQUALVERIFY OP_CHECKSIG
result of HASH160 is 20 bytes and it will never be an "empty byte" or OP_0 so this script must always fail.

Code:
6e2c9ece8a7c29e81adfd03bc4c4914812107236fa42038d8e8013063f3d1af8:1
OP_IFDUP OP_IF OP_2SWAP OP_VERIFY OP_2OVER OP_DEPTH
there is no OP_ENDIF anywhere after OP_IF
5  Economy / Speculation / Corona virus and stock market have NOTHING to do with bitcoin and its price on: March 12, 2020, 01:57:34 PM
unlike companies with their stocks in stock market bitcoin
doesn't rely on human contact to work,
it doesn't rely on import/export from other countries such as China to function
it doesn't need employees to come to work or not
....
when stock market crashes it is because the companies are having a terrible time making ends meet and are currently losing millions of dollars.
meanwhile bitcoin is working better than ever and it has been accepted as a legal currency in multiple countries over the past 2 weeks.

the only conclusion remaining here is that manipulation is decreasing the price and the media is blaming Coronavirus, stock market crash, .... for it while none of them are the real reason.
6  Economy / Service Discussion / What is the best way of selling small amount of bitcoin to tether? on: January 30, 2020, 03:47:23 PM
i'm looking to exchange a small amount of bitcoin to tether but i have never done this before in anywhere other than a regular exchange which i don't want to use this time. i am looking for a more decentralized way in a site like shapeshift for example that doesn't require KYC or any kind of registration.

additionally do you know any tether wallet i could use to receive and then send it later locally that also doesn't need signing up on a website or KYC,...?
7  Economy / Speculation / Brace yourselves, there is FOMO coming on: January 08, 2020, 05:03:28 AM
as we entered 2020 and the first week is coming to an end, price has picked up and started heading towards $10k as it was expected before.
like all the previous times i again expect another FOMO to start due to this rise that would bring the price up in a sudden and big move. the only question remaining is about when it is going to start.

we saw a small version today as price jumped up from $7300 to $8300 but that is the small FOMO. i think we can see price easily jump up above $10k when it starts.
8  Economy / Speculation / some people love imagining doomsday when there is any drops! on: October 25, 2019, 05:48:41 PM
over the past 2 days that we saw a small 9% drop i have seen all kinds of so called "speculation" where people are seeing all kinds of doomsday scenarios. in some cases it is wonderful how their imaginations work. from simple whales manipulating to the good old China bans bitcoin has been the heated topics over the past 48 hours!

what happened? price started a tiny rise then the FOMO kicked in pushing the price back up. guess who was FOMOing? Wink
9  Economy / Speculation / is the market building up towards another bog FOMO? on: October 01, 2019, 03:11:09 PM
i am always fascinated by the FOMOs that keep happening in bitcoin market. earlier this year i created two topics on two different occasions about it the small inital FOMO in first stage and another FOMO with a bigger leg up.

with the current situation where price has come down below the $10k support line and the fact that a lot of weak hands were flushed out, i am guessing pretty soon after the drama ended we are going to see another FOMO market shape up bringing in a lot of money like a tsunami. this time if the momentum could build up we could see $20k before the end of the year.

what do you think about the size of the upcoming FOMO? can we see a bubble in short term this time or will it be like last time (small just to kick start the rise)?
10  Bitcoin / Bitcoin Discussion / in case you didn't know what hashrate is and how it is calculated on: September 25, 2019, 12:43:04 PM
Hash Rate is the number of hashes that are being calculated every second while mining bitcoin. the problem is that miners don't report how many hashes they calculate, we don't know how many miners there are, blocks don't store "h/s" anywhere, and we have no way of actually measuring it.

what we can do is to come up with an estimation of the rate based on difficulty and the time it took to find certain number of blocks [1]. it is an "estimate" because the time between blocks is not fixed, it is random due to the chance-based nature of finding a hash that satisfies Proof-of-Work condition. and also difficulty is fixed until 2016 blocks are found. so when you do the calculation in a shorter period of time you sometimes end up with big ups and downs.
another interesting thing is that if you do the calculation on your own and choose 2 random times as the day's start and end (like from 2:35 PM yesterday to 2:35 PM today) you end up with different values.

in other words this chart: https://www.blockchain.com/charts/hash-rate?timespan=60days
that is being advertised today as the cause of the "drop" is nonsense. if you want to look at a better hashrate estimation closer to reality look at this chart:
https://www.blockchain.com/charts/hash-rate?timespan=60days&daysAverageString=14



it is the average in 14 days which is teh difficulty adjustment period and since the time frame is bigger the error in the final calculated value is smaller hence the smoother chart instead of zig-zag-y one.
of course there is always hashrate fluctuations as miners come and go and it is visible on this chart too but nothing drastic as they are spreading all over the internet today!

[1] https://en.bitcoin.it/wiki/Difficulty#What_network_hash_rate_results_in_a_given_difficulty.3F
11  Bitcoin / Development & Technical Discussion / problematic scenario with SIGHASH_ANYONECANPAY on: September 04, 2019, 08:37:10 AM
(lets call SIGHASH_ANYONECANPAY ACP for short)

ACP allows you to only sign your own input and ignore the rest.
Code:
[input_ACP] [output_1, output_2]
so if others can add their inputs to this transaction like so:
Code:
[input_ACP, input_1, input_2] [output_1, output_2]
or
Code:
[input_1, input_2, input_ACP, input_3] [output_1, output_2]
now this works fine with ALL and NONE since the index of the input_ACP doesn't matter at all.

but the problem is if it was signed with SINGLE:
Code:
[input_ACP] [output_1, output_2]
in this transaction you only sign output_1 from outputs since input_ACP index is 0.
and if someone added their input like this:
Code:
[input_ACP, input_1] [output_1, output_2]
it works fine.

but if someone added their input like this:
Code:
[input_1, input_ACP] [output_1, output_2]
then input_ACP signature would become invalid since now the index of it is 1 and should have signed output_2 instead!

so the question is, am i understanding the way SINGLE | ACP signhash works and is this a problem or am i mistaken?
12  Bitcoin / Development & Technical Discussion / where can i find examples of transactions with different SIGHASH types? on: August 07, 2019, 07:08:27 AM
i have been learning more about how transactions are signed and already finished all output types but all with SIGHASH_ALL. i feel like all the documentations are lacking when it comes to different SIGHASH types.

bitcoin.org has a "transaction guide" that explains what is signed with each type but i can not find any actual examples anywhere to understand what it means and see it on an actual transaction on the blockchain.

are transactions signed with these types even final/valid?
what is the scriptpub of the outputs they are signing?
13  Economy / Service Discussion / Brave, the so called "privacy" browser now requires KYC! on: July 31, 2019, 05:05:33 PM
i just found out about it but apparently this has been the plan for some time now. it seems like it was first for publishers to gather BAT tokens and now it is to be enforcd for anybody who wants to use the wallet (Brave Rewards).




it is worth noting that KYC is not requires if you use it as a browser but the question rises, why would you want to use it after this and when there are good browsers like Firefox available which is the original code of this project?
14  Bitcoin / Wallet software / Which SPV wallets rely on bloom filters right now? on: July 23, 2019, 02:37:11 PM
i came across this new change in bitcoin core's next version (0.19) which they are planning to disable bloom filters by default. you can read about it in this mail: https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2019-July/017145.html there is also the link to the PR and the relative discussions.

i was wondering which one of the current existing SPV clients rely on boom filters to work?
15  Bitcoin / Bitcoin Discussion / BTW US Govt does NOT recognize anybody as Satoshi on: May 23, 2019, 04:55:03 AM
it seems like the "hype" has died as they are now done pumping the shitcoin known as BSV but in case you missed it US copyright office made an official announcement saying they do not recognize anybody, specifically Craig Wright, as Satoshi Nakamoto despite what lots of clickbait news sites have been saying a day ago when the shitcoin pump began.

link: https://www.copyright.gov/press-media-info/press-updates.html
16  Economy / Speculation / THE FOMO! on: April 02, 2019, 01:08:54 PM
a while ago i started a topic here talking about the FOMO that is going to occur when the price rise begins. here is the topic: https://bitcointalk.org/index.php?topic=5108231.0
although there weren't that many votes but it seems like most people got the right answer (the shoot up to $5k) which was the FOMO that i was talking about there. the initial leg up which shoots price upwards $1000 in a couple of hours.

now another question. what do you think the next leg up is going to be? maybe you think there is no FOMO and only a slow rise this time?
lets see how the results are going to be this time...
17  Economy / Speculation / What do you think the size of the FOMO going to be when it starts? on: February 10, 2019, 03:48:45 PM
recently we have seen a small preview of what the FOMO (fear of missing out) can look like in bitcoin market when the rise starts. we have also seen it many times when the reversals happen and generally whenever there is a rise.

so considering the current situation where most investors are scared, how big do you think the FOMO is going to be when the rises start?
18  Economy / Trading Discussion / if you want to learn how to trade then start NOW on: June 27, 2018, 02:40:48 PM
i always say that the best way of learning "how to trade" is to start doing it yourself. you won't learn anything by following others, reading stuff online and doing nothing. you have to get your hands dirty.
one of the good things about cryptocurrency market is that the exchanges allow you to start trading with a small amount. there are even exchanges out there that allow orders as small as 0.00001000BTC which is about 6 US cents! you can invest about $10 and start your trading journey and gain experience.

so why NOW is the best time?
it is the best time because prices are falling and there isn't any pumps going on in the altcoin market. for instance if you have started trading last year, if you closed your eye and chose an altcoin to invest in then no matter what you chose it would have gone up and you would have made profit. but that doesn't make you an expert. instead it gives you a false sense of being an expert which will be more harmful in the long run when the  dumps come (you can see how many people are currently crying about it on bitcointalk and telling everyone how they should have "patience" which is a big mistake).

BUT if you start now, you have to make good decisions otherwise you lose money. so you learn the most important lesson and that is decision making for example in choosing the right entry point and the right exit point.
and if you make the wrong mistake there is no safety net (pump) to cover your ass. which is why you will be forced to learn. and that can help you in the long run.

and know this: even in this dropping market you can still make profit
19  Economy / Economics / you gotta wonder why they are worried about your money! on: June 25, 2018, 01:44:46 PM
these days we keep seeing how these throw away accounts here are warning you to sell your bitcoins and how you will lose money,...

you have to wonder why they are so worried about your money and don't want you to lose it so they are telling you to sell your bitcoins LOL.

you gotta ask WHY? what's in it for them if you sell.
i am not saying you should hold. i just want to raise the question that you should have been asking all along about those who create multiple throwaway accounts every day to say the same thing over and over again...
20  Economy / Speculation / Bithumb hacked: price went up = good sign? on: June 20, 2018, 02:55:51 PM
Bithumb was hacked yesterday and the news has been spreading in the major media for at least 14 hours now based on the article times[1].

price however has not shown any reaction to the news and on top of that in the past 14 hours we have had a rise. granted it was a small rise but still it reached $6841 a couple of hours from this news.

is this a good sign that we have reached the absolute bottom?

[1] https://www.ccn.com/breaking-south-korean-crypto-exchange-bithumb-hacked-thieves-steal-30-million/
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