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Questions tagged [race-attack]

A type of doublespend attack relying on making two unconfirmed payments at the same time.

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2 answers
221 views

What is the downside of having a default setting in which nodes will invalidate blocks that comprise a surprise reorg?

Suppose that suddenly, out of nowhere, a longest-chain appears that reorgs the last 15 blocks. Such an attack could be accomplished from time-to-time even by a minority attacker who is either lucky ...
2 votes
1 answer
70 views

Race attack with transaction fees

let's say I run a simple race attack (say in a restaurant). I transfer BTC to the restaurant but seconds before (or after) I send the very same coins to myself. To make this deal more likely for ...
1 vote
1 answer
87 views

Chain Race: How to know chain-length of competing chain?

If a fork happens, miners mine on the block they receive at first. Further, they only forward the block they received first (so the block they will use to mine)! So it can happen that 10% of the ...
1 vote
1 answer
84 views

double spend attack: Is this actually true for the more time progress the higher the probability of success for attacker

I'm new here. I have a question here. Some experts keep saying that this assumption isn't formally correct and I don't really understand why or why they might be wrong. In the double spend attack; ...
0 votes
2 answers
57 views

can attacker and honest node in double spend ever tie?

in bitcoin white paper there are only attacker and honest nodes. you have p, and q for probabilities. in double spend attack, in bitcoin whitepaper, can we talk about possible tie of attacker and ...
2 votes
1 answer
2k views

Race Attack vs. Double-Spending Attack: are they same?

Race Attack vs. Double-Spending Attack: are they same? I know definition of both attack both some times it is called as "race attack" and most of the time called as "double-spending". I guess (maybe) ...
1 vote
1 answer
116 views

Can this double-spend attack happen in Bitcoin?

I am trying to learn more about Bitcoin. I was looking at this video to understand how a "double-spend attack" is kept from taking place on the Blockchain (in Bitcoin). https://youtu.be/Lx9zgZCMqXE?...
5 votes
3 answers
2k views

How can I find well-connected nodes?

If I am a merchant accepting 0-confirmation transactions I should protect myself against race attacks. Several resources state that I should configure bitcoin daemon to not listen for incoming ...
2 votes
0 answers
48 views

Globally distributed accomplices for improved outcome in race attack

Would it help you to win a race attack if you had accomplices from all over the world, say Berlin, Beijing, Boston, and Buenos Aires all propagate your transaction to the nodes that they're connected ...
2 votes
2 answers
315 views

Can an attacker create many nodes that approve blocks without work?

There are currently about 7000 nodes in the Bitcoin network. The security rests on the fact that someone adding nodes would have have to expend CPU power to hash transactions. What prevents someone ...
0 votes
1 answer
209 views

How to detect a race attack and re-spend the already-spent outputs?

My service automatically accepts, processes and sends payments to its users. It connects to bitcoind through its JSON-RPC API and makes use of the raw transactions interface. What is going to happen ...
2 votes
1 answer
873 views

Specifics on "Race Double Spending Attacks"?

Hi guys I am doing some research on double spending in the bitcoin network several ideas have been confusing me: In prevention of Race attacks, merchants are advised to "connect to a large random ...
7 votes
3 answers
428 views

What nodes are best for lessening the risk of loss from a race attack

A successful race attack is one where the payment recipient's node receives a spend transaction yet the next block that is mined has a different transaction that spends the same coin. Thus the ...