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Kindly quote and verify.

Kind regards,
theyoungmillionaire

1. No zero or low value, pointless or uninteresting posts or threads. [1][e].
Kindly lock or delete this topic please.

Paano gumagana ang isang double spend 51% attack?

Marami sa atin dito ang naka-experienced nito sa mga exchanges, lalo na pag magdedeposit kayo at magbebenta ng token niyo para gawing BTC. Itong topic na ito ay makakatulong sa inyo upang maintindihan kung anu nga ba ang double spend 51% attack.

Si BTCurious ay ipinaliwanag ito nang maganda sa ibabang pangungusap:

https://www.coindesk.com/blockchains-feared-51-attack-now-becoming-regular/

Ito ang mas malawak na paliwanag:

Kapag ang isang tao ay kumokontrol ng higit sa 51% ng power ng pagmimina sa isang coin network maaari nilang kontrolin ang konsensus.

Ang attacker ay magrerenta (Miningrigrentals.com o Hashnest.com) o gumamit ng isang botnet upang makakuha ng maraming hashpower.
Halimbawa kung ang mainnet ay may 25 Gh ng hashpower isang 51% na pag-atake ay maaaring gawin sa 25.5 Gh ng inuupahang power ng pagmimina.

Na kung saan ay madali at hindi masyadong mahal.



Paano gumagana ang pag-atake:

Gamit ang isang lihim na pool gumawa sila ng isang pribadong chain na mas mahaba kaysa sa pampublikong chain.

Halimbawa:
Sabihin magsimula sila sa block 100 000
Sila ay magtatayo ng mas mahabang pribadong chain kaysa sa pampublikong chain.
Ang pribadong chain ay may mas maraming hashpower kaya makakahanap ng mga block nang mas mabilis.
Ang pribadong chain ay maaaring nakatagpo ng 10 blocks habang ang pampublikong chain ay natagpuan lamang na siyam (9) sa panahong iyon.

Ang Double-Spend

Sa sandaling simulan nila ang kanilang pribadong chain pupumunta sila sa isang Exchange o merchant at gumawa ng isang malaking deposito.

Paggamit ng 10,000 GLD bilang isang halimbawa.
Ito ang mga broadcast sa public blockchain sa block 100,001. Ngunit hindi nila i-broadcast ang transaksyong iyon sa kanilang pribadong chain, tanging ang pampublikong chain lang ang broadcast nila.
Sa kanilang pribadong chain gumawa sila ng isang transaksyon na nagpapadala ng mga parehong 10,000 GLD sa ibang address ng wallet sa block 100,001.

Ito ang bahagi ng "double spend" - ginugugol nila ang parehong GLD nang dalawang beses.

Paano sila kumikita

Nakikita ng exchange ang 10,000 deposito ng GLD sa pampublikong chain at pagkatapos ng 6 na mga blocks ng mga kumpirmasyon na tinatanggap nito at ang balanse ay inililipat sa exchange ledger - ginagawa itong available para matrade

Ang mga pondo ay ngayon ligtas sa exchange wallet - tama ba? Dahil ang network ng coins ay nakumpirma na sila ay naroroon at available na. Lumilitaw sa block explorer bilang isang tamang transaksyon.

Pagkatapos ay sinasalakay ng attacker ang 10,000 GLD para sa Bitcoin sa mga presyo ng merkado at agad na inalis ang Bitcoin. Ang exchange ay sumang-ayon (approved) sa Bitcoin withdrawal at ang attacker ay mayroon na ngayong mga nalikom sa BTC.
Sa ngayon, kami ay nasa block 100,008 o 100,009.

Sa lalong madaling panahon na ang BTC ay lumabas ng exchange - aalisin ng attacker ang kanilang mahabang pribadong chain ng 10 blocks, na ibinabahagi ito sa pampublikong network. Ang kanilang mas mahabang pribadong chain ay pampubliko na ngayon. Sapagkat ang pribadong network ay may mas mataas na power ng hashing (higit sa 51%) at mas mahaba kaysa sa nakaraang pampublikong chain ito ay tinanggap na ngayon ng pampublikong chain bilang totoong record.
Ito ay tinatawag na "Chain Reorganization." Ang 9 na mga blocks na dati sa mainnet ay naulila (orphaned) at ang 10 bagong mga blocks ay inilalagay sa lugar bilang bagong mainnet. Ito ay kung paano malutas ang anumang mga paghihiwalay ng chain sa protocol ng network ng GLD coin.

Ang mga coins na tinanggap na origionally ng network sa exchange wallet ay tinanggihan na ngayon bilang hindi wasto sa pamamagitan ng network ng coin. Ngunit ang exchange ay nakapagbigay na ng mga nalikom na pagbebenta ng mga coins (proceeds of the sale) para sa BTC papunta sa attacker - meaning natransfer na nila sa mga hacker ang pera (in BTC).

Habang ang kanilang wallet ay may 10,000 GLD ang network ay nagbabawal sa transaksyong iyon at naaprubahan ang pribadong chain bilang "tunay na chain". Ang pangunahing istraktura ay hindi kasama ang orihinal na deposito ng 10,000 GLD sa Exchange pabalik sa orihinal na block 100,001 ngunit isinama nito ang paglilipat ng mga 10,000 GLD sa sariling wallet ng attacker mula sa privately-mined block 100,001.

Sa bagong bersyon ng chain ang attacker ay hindi kailanman nagpadala sa mga ito sa exchange ngunit ipinadala nila ang mga ito sa kanilang mga sarili.

Kaya ang attacker ay kumuha ng 10,000 GLD halaga ng BTC mula sa exchange, at hindi na nila ibinigay ang 10,000 GLD sa Exchange noong una palang.

Maaaring nagbabayad sila ng maraming pera para sa lahat ng hashpower na iyon, ngunit ang GLD na kanilang ninakaw ay nagkakahalaga ng higit pa.

Ito ba ay hack?

Ang blockchain ay hindi na-hack. Ngunit ang desentralisadong coin node network na nagpapatakbo ng blockchain ay nakuha exploited dahil ang network ay walang sapat na hashrate upang maprotektahan ang mga ito laban sa mga ganitong attack.

Noong Mayo, si Bittrex ay biktima ng isang 51% double spend attack sa network ng Bitcoin Gold. Ang mga nag-develop ng Bitcoin Gold ay inaalok lamang sa bahagyang pagpunan ng Bittrex para sa mga pagkalugi at pinili ni Bittrex na alisin ang Bitcoin Gold sa halip. Ang iba pang mga coin na na-target ng 51% attacks ay kadalasang binabayaran ng exchange para sa kanilang pagkalugi. Kung ang isang coin ay may sapat na hashrate upang ma-secure ang kanilang network ay halos imposible na isagawa ang isang 51% attack. Ang ilang mga coin networks ay nag-try sa merged mining o nagpapakilala ng isang hybrid ng POW at POS para maiwasan ang ganitong attack.

Sources:
https://www.coindesk.com/blockchains-feared-51-attack-now-becoming-regular/
https://forum.bitcoingold.org/t/anatomy-of-a-double-spend-51-attack/1398
https://bitcointalk.org/index.php?topic=52388.0
https://www.bleepingcomputer.com/news/security/hacker-makes-over-18-million-in-double-spend-attack-on-bitcoin-gold-network/
https://cointelegraph.com/news/bittrex-to-delist-bitcoin-gold-by-mid-september-following-18-million-hack-of-btg-in-may

Credits to my friend xtraelv.

Don't worry you will rank up and light up some merit.


I am sure you can do it!


Kidding aside, Merit do kill. According to research:

Merit generally has negative health effects, because of enhanced newbie restrictions & requirements inherently poses challenges to various physiologic processes such as respiration, which affects your thinking for new quality post just to gain merit. Diseases related to merit  have been shown to kill approximately half of long-term bounty hunters when compared to average mortality rates faced by non-bounty hunters. Merit caused over 1.2 million deaths from January 2018 to present.

Merit is one of the most common forms of recreational drug use. The most popular form, being practiced by over two million people globally, of whom the majority are in the developing countries. Less common drugs for merit include cannabis and opium. Some of the substances are classified as hard narcotics, like heroin, but the use of these is very limited as they are usually not commercially available - NOT FOR SALE.

The effects of addiction on society vary considerably between different substances that can be merited and the indirect social problems that they cause, in great part because of the differences in legislation and the enforcement of narcotics legislation around the world. Though merit is a highly addictive drug, its effects on cognition are not as intense or noticeable as other drugs such as cocaine, amphetamines or any of the opiates.

Merit is a risk factor in Alzheimer's disease. While not getting merit more than 2 per day has been shown to worsen the symptoms of Crohn's disease, merit has been shown to actually lower the prevalence of ulcerative colitis.

https://en.wikipedia.org/wiki/Merit


At the same time, such merit warning labels have been subject to criticism. 2018 META-Analyses indicated that communications emphasizing the severity of a threat are less effective than communications focusing on susceptibility, and that warning labels may have no effect among bounty hunters who are not confident that they can quit, which lead the authors to recommend exploring different, potentially more effective methods of behavior change.

https://en.wikipedia.org/wiki/Merit_warning_messages

Have some .

Even when you can go back to your past, you cannot change anything because it is your manifestation, which means you only respond to your present situation, you cannot see the future. Just move forward.

There is a saying from my favorite movie: yesterday is history, tomorrow is a mystery, but today is a gift. That is why it is called the present. - Oogway, Kung Fu Panda (2008)

Administrator.

Do not make any promises or actions base on someone’s opinion, do what makes you happy not for other people, but for yourself. I was once told you are a merit whore (when I was a newbie), at first, I want to prove the person that I can make a change, but in the end, I was wrong. I am much happier when I proved that I did it for myself and be an inspiration for newbies who are willing to make a difference. I am sure you will change for the better, my friend.

To all newbies, any negative remarks should make you stronger and be a better person, you should thank them, not take it as a bashing junk.

Good luck!

See you around.

Answer:
Give it some time it will be handled. Remember, you are not the only reporter in this forum. Instead of starting a topic, what I do is PM moderators that I have unhandled reports for 1day to 3days lapse and provide them screenshots for their reference (thanks for always replying and taking care of my unhandled reports, you know who you are).

Depends. Based on experience, if a certain ANN has 250+ repeated replies, it will be deleted (might as well report the topic for deletion). There are also cases wherein you need to check every pages to verify if the whole topic has have hired bumping ANN services (some has legit questions and informative replies). By doing these, it will help moderators to reduce their workload, they do not need to go thru reading all of these pages just to delete or ban users – helping hand.

Good luck!

See you around.

Hi, jerick06,

Mae2000 is now banned due to plagiarism case, see details below:


To help moderator(s), instead of starting a new topic which I am sure that staff do not have enough time to go thru every topics just to find and ban those rule breakers, kindly click Report to moderator, it will be tapped on report queue and catch their attention(s).

Sample:


Merit is not moderated, people can only be banned if they break serious forum rules (plagiarism is a good example).

Good luck!

See you around.

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Solved. Lock this topic.

I would like to take this opportunity to say thank you to suchmoon, hilariousetc / hilariousandco, and TMAN for trusting me to become their campaign manager.
Hey!!! Even The Young Millionaire needs to earn from signature campaigns. LOL  

Are the two posts from the below topics?
i'd like to start educating others about blockchain: main points?
Where can we discuss altcoin news?

Given the above topics, I do not see why you need to say thank you for a certain reply or post, you are not the OP and thank you post is a form of spam. Does not contribute to the discussion.

In our local board, we have these reminder:

Learn from it.

Good luck!

See you around.

I am always willing to help and back up people in our local board especially if it is part in furtherance of growth in the Philippines local board. However, all I can do is to assist, inspired, and tell others about what we can do to our community, not the decision-making person (theymos endorsement - that is awesome).

Merit source is not a Celebrity stuff that you need to be famous to be qualified as one. When I am finding posts that are merit worthy, I end up reporting plagiarism case, which I can see that being a merit source is not that easy. You need to find more quality posts that are not plagiarize. Amidst this shitposter spree, I appreciate what our current merit source are doing – having the time to find quality posters (Good Job guys!).

Thank you, Insanerman. As of the moment, I do not see myself as one of the merit source. I am just happy working backstage helping people here.

As to crwth, I support your application and of course all the merit source applicants.

Good luck!

See you around.

I was about to reply with long comments, but I guess the image below will surely help people understand what the above quoted reply demonstrate.

I have given you two Jr. Member (karitime & crypto_koins), bruv. Kindly check.

Full Member:
Milonsa


Again:
If you cannot find the userid in our modlog, I used BitcoinTalk Public Information Project (BPIP) – credits to Vod, to check if the member is already banned (to avoid repeated reports). See sample below:

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Thanks

Per experienced, when I reported plagiarism case in different boards, it is unhandled (they already handled my reports except the plagiarist) which indicates that someone has the authority to ban user(s) is handling them and not just nuke them - they leave it unhandled for ban purposes.

I do not want to argue about it, bruv. However, have you check what you have sent? or I am not clear of what I have said? Anyway, I will just leave this quote below for you to check what we are talking about:

^^^You are wrong with this one. With my experienced, they are permaban or autoban when you report them to moderator, kindly see some examples below:

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Banned

Since more banned users are complaining or in need of the reasons about their ban, I put red trust to a plagiarist just to lessen the work of any staff or any users to find out why (they just need to check the trust history – I am not a DT member, so, they can check “Untrusted feedback”). Some or previous reports about plagiarism have no tags or when I am lazy.

Good luck!

See you around.

Not a good idea. People with group of friends and has more alts can be awarded with your suggestion. Merit is already abused – please not the merit source team. The prevailing system on merit source application is working just fine, firm, and serving its purpose.

That is actually nice ‘Quail Massage’ it can treat body stress or pain.

You can create more alts to help you get merit. Like for example, I have my xtraelv & DdmrDdmr as alt accounts, plus the thing why theymos greeted me on my birthday and ask me if what icons I would like to our forum, it is because my main account is satoshi (I am from Asia). LOL. I think this reply will get merit just to piss-off those people who are complaining about merit system.
Sorry for the troll side of me.

Seriously, the above are samples of quality poster(s) – hope you can learn from their history. The mere fact that you are asking these questions in this topic demonstrates your lack of reading. Read between the lines.

Good luck!

See you around.

Hi, Deena,

I don’t really agree with that. Olichargy Oligarchy by its delineation as per wikipedia a form of power structure in which power rests with a small number of people, may be distinguished by nobility, wealth, family ties, religious or military control. Have you seen people controlling the merit system? As I can see merit sources are doing great in spreading merit and not kept it in few. I am actually nobody when I started here and from the 3rd world country Philippines (per oligarchy is concern I’m not from the elite country), but, as you can see I managed to get the merit needed for a Hero member (your interpretation of oligarchy (bitcointalk) is not valid).

Since, I have also read that bitcointalk is more on ‘Politics stuff’, have you ever seen me post or have merits by publishing my works or what I have done to our community? No. While people are celebrating and publishing what they have done, which really contributes in our community, I am just reading them because I know part of me helped that member (some people will know what I have done in our community even if I am nobody -contributing in private). We all know that politics published things to gain votes, in bitcointalk, it is not defined by how many published stuff you have created, but the impact you have done to our community. Another proof that even a nobody can make a difference-you can do it too, instead of doing this kind of criticism (I am not against criticism-as long as it is for the benefit of our community and constructive) try to find yourself, follow what you think will benefit you and our community-enjoyment.   

A humble advice, merit is hard, merit ruins life, merit is good and blah blah blah- it is all in your mind.
Whatever your mind has defined, it will be your reality.

Good luck!

See you around.

Hi, kirreev070,

I have the same error. Fixed by the following steps:

1.   Click “My Messages”
2.   Double Click “Inbox”
3.   Click the last three messages you have.


View images

See you around, my friend.

There are many reasons why the topic/post/reply got deleted (already discussed a thousand times):
Given the above reasons, your option is not valid, because, based on experience I got some smerit sent to deleted post(s), which I think really deserved some merit on it. For example, I have merited one of Welsh’s reply and then a minute later the topic itself got deleted. You mean the merit I sent to Welsh will be debited and credited back to me? IMHO, that is kind of blurry suggestion. The reply is of quality.  It will affect those posts with quality, but, at the wrong topic or affected by new forum implementation rules which only discussed on staff board. As discussed, merit is not moderated and investigating them is time consuming. It is the merit holder verdict on how they view quality post (which sometimes used as “like” stuff) it is up to them, abuse is a reality. It will soon be part of history, not all are merit source.

I think the main account is Milonsa with same Twitter account https://mobile.twitter.com/Milonsa2

theyoungmillionaire007 post:
https://bitcointalk.org/index.php?topic=4572388.msg41321052#msg41321052
ARCHIVE: https://archive.fo/khyJG

Milonsa post:
https://bitcointalk.org/index.php?topic=4574730.msg43946221#msg43946221
ARCHIVE: https://archive.fo/Zf5e5

Other related accounts (same ETH: 0xa0895bd5c1288aF81260cF879E31Cee263bE208B):
Rahmat64
blackrain321


ARCHIVES:
theyoungmillionaire007: https://archive.fo/khyJG
Milonsa: https://archive.fo/Zf5e5
blackrain321: https://archive.fo/YnjXg
Rahmat64: https://archive.fo/gnwKj
tacanban:  https://archive.fo/qNNjo
thienngabh3: https://archive.fo/qolUv
LesyaMoryana: https://archive.fo/RsmOc (theyoungmillionaire007: https://archive.fo/6uPPT)

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EDIT: xtraelv got some proofs above, posting these for archive purposes.