17 votes
Accepted

Can miners reject transactions from an address?

Technically it is possible to blacklist addresses, and it needs just the majority of the mining power to agree. The problem is arriving at the agreement: Nobody stands to gain from witch-hunts, so a ...
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  • 63.4k
9 votes

What are tainted coins exactly?

The term "Tainted Coins" is often misinterpreted as a measure of provenance. That's understandable considering the traditional definition of the word "tainted" coupled with the reality that many ...
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  • 101
7 votes

Is it possible to reject a bitcoin payment?

The protocol doesn't include a way to reject transactions, for a variety of reasons (the protocol doesn't know which output is real and which is change; blocks can't be changed after being mined; etc) ...
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  • 28.7k
7 votes

What are the advantages/disadvantages to using the same Wallet Address?

Questions about altcoins are off-topic here, but the answer is essentially universal: if you re-use addresses, especially because of a desire to think of them as a long-term identity, you're ...
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5 votes

Where can I find research on wallet fingerprinting?

Is this the research article you are thinking about? It's blockchain.com wallet fingerprinting mostly on the basis of feerates by 0xB10C.
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  • 1,584
4 votes

Procedure for calculating taint?

I think I have an answer. It's not clear if this is how blockchain.info does it, but I'm not sure it matters, either. Taint is very similar to the everyday experience of diluting a liquid. Imagine ...
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  • 2,226
4 votes

What are the advantages/disadvantages to using the same Wallet Address?

Gap Limits I want to just smash the button until I find an address with some aesthetic/memorable strings. But I have no idea if this is a bad idea, wastes resources, That could create problems when ...
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4 votes

What is taint analysis?

The “taint” of a Bitcoin transaction evaluates the association between an address and earlier transaction addresses. The more “‘taint” the stronger the link between the two addresses. https://...
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  • 143
3 votes

Why should I use a Bitcoin Mixer?

Using a mixer helps preserve your financial privacy. The question is: who are you protecting your privacy from? Bitcoin transactions are public record, so anybody can view any historical transaction ...
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  • 17.3k
3 votes
Accepted

"Dirty" Bitcoins/Find Bitcoin origins?

The tool for complete history of all bitcoin minted already exist and its called blockchain. You can see all history here (random transaction selected) https://blockchain.info/tx/...
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3 votes

What are tainted coins exactly?

A thought experiment, let's nickname it "Poisonous Gift": Doesn't matter what cryptocurrency exactly, just assume the transaction ledger works like Bitcoin's. Alice (wallet A) gets ...
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  • 31
3 votes
Accepted

Which data should be used in order to detect addresses to be used for fraud?

Fraud and money laundering are two different things. Fraud, or accepting or spending money under false pretenses, would be very difficult to detect on the blockchain because it requires outside ...
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  • 8,724
3 votes
Accepted

Are there any services to tell black list address?

No and active work is being done to make this even harder as we speak. Fungibility is a necessity of a currency, black lists are not compatible with that.
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  • 6,189
2 votes
Accepted

Reverse wheresgeorge.com for BTCs

Actually, yes, this is possible. However, your payment output might get split or combined with other payment outputs in later payments. Therefore, the graph will be less linear than you suggest: ...
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  • 63.4k
2 votes
Accepted

What are the published Bitcoin addresses of the Binance 7000 BTC hack from 2019 May?

This article on Coin Telegraph claims that this is the transaction spending the 7074 BTC. You can follow the amounts from there. Here is a tree chart: https://www.blockchain.com/btc/tree/444776063
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1 vote

What prevents someone from tainting the coin tumbling pool of the Wasabi wallet?

AFAIK Coinbase looks for a five hops before / after incoming / outgoing TX. So adding extra hops will be enough for now. It can be automated with Samourai Wallet's Ricochet or my scripts for bitcoin-...
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1 vote

Tainting with HD wallets

HD wallets help avoid reusing addresses when receiving payments because you can generate a new address each time. HD wallets also make backup of many addresses much easier: https://en.bitcoin.it/wiki/...
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  • 396

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