Topic: Illegal things to buy!! (Read 2163 times)

I think Blockchain is unable to detect that what thing is bought with the transaction occur, and I think it also does not detect that which person is that who send or receive that bitcoin transferred.

block chain don't know which transaction being done for an illegal purchase or deal. all transaction are same.. block chain can't detect transactions. but if we know an address of a scam person and report about it in blockchain, then may be blockchain can cancel transaction to this address.

Well as we all know that whenever we transact it always go through blockchain first. So is it possible that blockchain can detect illegal trasanction such as buying drugs, guns, hitman etc., especially on deepweb. And where does bitcoin go when blockchain detects a illegal transaction?

Wow I didn't even know that Bitcoin reconnaissance is even a thing until now. Elliptic are saying on their website that they can trace Bitcoin addresses of dark web entities wow can they really do that? I thought deals on the dark web are very hard to track down if not impossible. Maybe they have developed an algorithm to datamine suspicious transactions or something because if they are doing this manually it sounds crazy.

excatly,even for bitcoin address which used for gamble or address from gambling site,blockchain not care and not trace is as bad or illegal thing,so i think blockchain so far not take responsibility for any illegal thing.

I think blockchain will be difficult to detect the illegal transactions with bitcoin in their site. Cause the transaction don't need to write for what someone do the transaction.

There are companies that do aim at detecting and monitoring illicit transactions in bitcoin for use by law enforcement, governments and merchants. For examples

https://www.elliptic.co/
http://www.coinalytics.co/
http://sabr.io/

An they can do this because bitcoin is not anonymous, but only pseduo-anonymous.

Well as we all know that whenever we transact it always go through blockchain first. So is it possible that blockchain can detect illegal trasanction such as buying drugs, guns, hitman etc., especially on deepweb. And where does bitcoin go when blockchain detects a illegal transaction?

some of these replies actually hurt my eyes... In order to avoid confusion:

- the blockchain = the technology behind bitcoin, recording all transactions in a public ledger
- blochchain.info = a website that offers services based on the blockchain
While the first is merely a piece of technology, the second is a company. The company can possibly do some data mining if they really wanted to.


- when you buy bitcoins, usually your name, address, paypal account, credit card, id,... or other forms of identifying information are needed. If somebody (FBI, interpol,...) wanted, they could easily find out who bought coins and on which address they were stored.
- when you trade your bitcoins for fiat or for physical services, the same information is needed, and the feds can link your identity to your wallet address.
- if somebody is really dedicated, he can follow the trail of the coins, unless you know how to conceil the coin movements (by using mixing services, coinjoin, exchanges,....)
This means that it doesn't matter if you use a VPN, tor or the computer in your public library, if you don't know what you're doing, somebody can follow the full trail of the bitcoins, from the moment they were mined, to the moment you bought them, to the exact moment where you traded them for dope, to the moment the dopedealer sold them again for fiat.


Luckily, if you're not doing horribly illegal stuff, i'm pretty sure law enforcement has better things to do than to find out who gambled $100 on dice or if you bought $50 worth of weed... I could be mistaking tough

Thank you very much for the the simple and yet very informative explanation. I don't think you are mistaken, but if somebody does it would be interesting to see what is he/she thinking.

Meiklejohn and her colleagues at UCSD and George Mason University have found that a little snooping in the blockchain can often uncover who owns which of those Bitcoin addresses. In a paper they presented at the Internet Measurement Conference in Barcelona, they showed that they could use “clustering” methods taking advantage of clues in how bitcoins are typically aggregated or split up to identify thousands of addresses based on just a few test transactions they performed. With the data from just 344 of their own transactions, they were able to label the owners of more than a million Bitcoin addresses. And by making just four deposits and seven withdrawals into accounts held on Silk Road, Meiklejohn says the researchers identified 295,435 addresses as belonging to that drug market.

When I asked Meiklejohn to try to trace Forbes’ transactions, I started by giving her the Bitcoin addresses associated with our account on the popular Bitcoin wallet service Coinbase–information that could in theory be obtained by any investigating law enforcement agency that sends Coinbase a subpoena. With just that list of my public addresses, she was able to identify every transaction we had made, including deposits to the Silk Road, to competitor sites Atlantis and Black Market Reloaded, and even a transfer to the personal account of Forbes reporter Kashmir Hill. (Hill had revealed her Bitcoin address during her earlier experiment of living for a week on nothing but Bitcoin.)

some of these replies actually hurt my eyes... In order to avoid confusion:

- the blockchain = the technology behind bitcoin, recording all transactions in a public ledger
- blochchain.info = a website that offers services based on the blockchain
While the first is merely a piece of technology, the second is a company. The company can possibly do some data mining if they really wanted to.


- when you buy bitcoins, usually your name, address, paypal account, credit card, id,... or other forms of identifying information are needed. If somebody (FBI, interpol,...) wanted, they could easily find out who bought coins and on which address they were stored.
- when you trade your bitcoins for fiat or for physical services, the same information is needed, and the feds can link your identity to your wallet address.
- if somebody is really dedicated, he can follow the trail of the coins, unless you know how to conceil the coin movements (by using mixing services, coinjoin, exchanges,....)
This means that it doesn't matter if you use a VPN, tor or the computer in your public library, if you don't know what you're doing, somebody can follow the full trail of the bitcoins, from the moment they were mined, to the moment you bought them, to the exact moment where you traded them for dope, to the moment the dopedealer sold them again for fiat.


Luckily, if you're not doing horribly illegal stuff, i'm pretty sure law enforcement has better things to do than to find out who gambled $100 on dice or if you bought $50 worth of weed... I could be mistaking tough

Well as we all know that whenever we transact it always go through blockchain first. So is it possible that blockchain can detect illegal trasanction such as buying drugs, guns, hitman etc., especially on deepweb. And where does bitcoin go when blockchain detects a illegal transaction?