11 votes

Why is the ledger public?

When Bitcoin was invented, Blockchain analysis was not as advanced as it was today and pseudonymous transactions were believed to be closer to anonymous than they are with Bitcoin today. Under the ...
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6 votes
Accepted

Understanding IP address tracing via Bitcoin Transaction

If an entity runs a large amount of relay nodes on the network, they could figure out which of their nodes was the first to see a transaction, and which peer that transaction came from. That does not ...
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  • 8,734
6 votes

Understanding IP address tracing via Bitcoin Transaction

I find that claim (tracing the IP address of a transaction) highly suspect as transactions don't have an IP address associated with them. Once a transaction has been broadcast, it is incredibly ...
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  • 62.5k
6 votes
Accepted

Is there a way to blacklist or track ransomware bitcoin addresses?

There are two parts to your question: Blocking: Blocking would entail either nodes refusing to relay transactions paying the crooks, or miners not confirming such transactions. Even if the criminal's ...
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  • 971
5 votes
Accepted

Is there a way to link a bitcoin user's transaction to entering a lightning network channel?

Is there a way for companies like chainalysis to see if your on the lightning network? Not really. Funding a channel will look just like sending coins to a P2WSH address. Closing a channel ...
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  • 62.5k
5 votes
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Is it possible to assign a single "from" and a single "to" address to Bitcoin transactions?

No, Bitcoin transactions cannot be cleanly projected on a single "from address" or a single "to address". Bitcoin can facilitate many payments in a single transaction and there may ...
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  • 64.6k
5 votes

Why is the ledger public?

The ledger has to be public in order for Bitcoin to be decentralized. The designers of Bitcoin didn't want to need anyone to play the role of a "bank" who keeps all the records, and whom everyone ...
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4 votes

Is it possible to track physical objects on a blockchain?

I forget who once said this, "If you think you need to use BlockChain technology, you almost certainly don't." BlockChain technology is designed to show proof of ownership via a proof of work ...
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3 votes
Accepted

Trace Bitcoin Fund Flows When There Are Multiple Input and Output Addresses

By definition of a bitcoin transaction, each of the outputs have all inputs as a part of their history. There is no way to trace which input contributes to which output, because all inputs contribute ...
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3 votes

Is it possible to track physical objects on a blockchain?

In short, no. Generally, this is known as the Oracle problem, and refers to the requirement of a blockchain protocol to refer to something external (the Oracle) in order to acquire some data necessary ...
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3 votes

Is there a way to blacklist or track ransomware bitcoin addresses?

Yes, it is possible to track addresses used for ransoms, however, it's not quite that simple. Bitcoin is designed to be "censorship resistant", meaning that it is very hard for a third party to block ...
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  • 8,734
3 votes

Anyway I can track the guy behind the bitcoin address?

No, there's no way for an individual to tie an arbitrary address to a specific person. However, it is sometimes possible for companies or governments to do so if the person went through a KYC/AML or ...
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  • 71
2 votes
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Where does Coinify get its Bitcoins, and can I track their exchange rate somewhere?

I asked them in an email and they provided me with the following response: ... we use a Volume-Weighted Average Price (VWAP) over multiple exchanges (not CoinJar though as the Wikipedia article ...
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  • 141
1 vote

How to find the FIFO chain beginning, the platform to a transaction by Transaction ID?

Bitcoin transactions are (intentionally) devoid of extraneous information such as 'sender' and 'recipient'. The inputs/outputs do not contain any information about who owns them, and neither does the ...
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  • 17.4k
1 vote

Trace Bitcoin Fund Flows When There Are Multiple Input and Output Addresses

There is no one-to-one relationship between inputs and outputs. "Bitcoins are recast with every spend". Bitcoins are held in unspent transaction outputs (UTXOs). An transaction input ...
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  • 64.6k
1 vote

How can I track all trades at an exchange such as GDAX

"Can I track all trades on an exchange, not just my own" yes. visit https://docs.gdax.com/#get-trades for additional information. this trades are afaik anonymous so you can not track who did which ...
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  • 747
1 vote

Is it possible to track stolen Bitcoin after exchange

I would like to know if there is a possibility to track my Bitcoin transfers after they have been exchanged to another crypto. There is always a possibility but it is generally beyond the ...
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1 vote
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How do I find where the BTC are sent to from a blockchain.com address page?

Blockchain.com is an explorer, and like most explorers, it will show any transactions that spend from that address as well. If there are no such transactions, then the received coins have not been ...
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  • 16.5k
1 vote

How to track bitcoin transaction on PC

how can I track the transaction or the newest block on my computer. You can run a full-node Bitcoin client such as Bitcoin core. It will collect the full blockchain - it can take a long time (weeks) ...
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1 vote
Accepted

Can't understand specific problem of Bitcoin anonymity

Maybe a more specific example would help: Senator Doe buys 100 BTC at Ed's Exchange, where his ID is required. He then withdraws those coins to his own address 1qwerty. Wearing a trench coat and ...
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1 vote

Can't understand specific problem of Bitcoin anonymity

I (as attacker) already know the owner of address B, don't I? why I need trap site? You're right, if you sold the bitcoin and sent it to an address, and you know the identity of the person to whom ...
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  • 7,090
1 vote

Are there any services that can reasonably guess what IP address a transaction originated from?

I see this as a non-issue. By using Tor the IP address of the originator is sufficiently obfuscated. See my two other posts for some discussion and related resources: How can I setup Bitcoin to be ...
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  • 3,136
1 vote

How can I confirm to whom the bitcoin address I sent a payment too?

You usually cannot. Bitcoin addresses are not explicitly linked to companies or people, unless they decide to publicize that they own an address (or receive funds from it via a third-party custodian)....
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  • 16.5k
1 vote

Can one trace the bitcoins to the end

There's a core of truth in your question. Indeed, eventually it will reach a point where you can trace it. But there might have been a lot of transactions/hops before that happens. If it has switched ...
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  • 671
1 vote

Is there a way to blacklist or track ransomware bitcoin addresses?

Yes BitcoinWhosWho.com allows bitcoin address tags, tracks website appearances and accepts scam reports from the general public.
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1 vote

Tracking the Bitfinex hacked coins

This is possible. It also may sound good on paper, but the implications are horrible. Think of it. 100 thousand bitcoin. 0.5% of all coins will be rejected. This is out of 21 million. Out of the ...
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