Skip to main content
6 votes
Accepted

I have received £46,21745 in my Bitcoin account. Should I confirm it?

I don't have any Bitcoin account [...] but I got an email that I have received £46,21745 in my account It is a lie. There's no money. It is a trick by criminals who will later ask you to pay some ...
RedGrittyBrick's user avatar
5 votes

Why can't nodes have the relay option to disallow certain transaction types?

Optionality is not bad per se, but there are arguments for why it may be harmful, and why having optionality would be bad for node operators and also not have the effects that people think it would. ...
Ava Chow's user avatar
  • 70.5k
4 votes
Accepted

How do I set up bitcoin.conf in Bitcoin Knots to stop spam and low value transactions?

Bitcoin Knots aims to default to reasonable node policies. The reason datacarrier is enabled by default, is that it's impractical to prevent 32-byte spam from abusing p2*h outputs which is much more ...
Luke Dashjr's user avatar
  • 1,269
4 votes
Accepted

How to actively measure mempool?

You should use full nodes on both sending and receiving end Sending Tx Use the -connect option to broadcast your tx through selected neighbours. Use https://bitnodes.21.co/ to find neighbours. Use ...
dark knight's user avatar
  • 2,017
4 votes
Accepted

Who is spamming the bitcoin cash mempool and why?

It is not too difficult to check the low-fee transactions in large blocks with block-explorer. Follow the link https://blockchair.com/bitcoin-cash/transactions?q=block_id(479479)&s=id(asc) and ...
amaclin's user avatar
  • 6,770
4 votes
Accepted

What makes it difficult to prevent transactions where value transferred is less than the fees paid?

At the wallet level Nothing prevents wallets from implementing reasonable safety measures to protect their users from undesirable behavior. Bitcoin Core for example has a feature to (by default) ...
Pieter Wuille's user avatar
4 votes
Accepted

How Bitcoin-Core does decide whether high fee during sendrawtransaction?

What exactly is the high fee that Bitcoin Core is talking about? Does this client have exactly fixed number? Bitcoin Core has a hard limit for what it considers to be an absurdly high fee, which is 0....
Raghav Sood's user avatar
3 votes

What are the different types of spam that the Lightning Network is subject to?

There are three types of spam problem in the Lightning Network. Let's call them "local","fast" and "slow". Local spam is someone sending or requesting too much data: that'...
Michael Folkson's user avatar
3 votes
Accepted

Is Bitcoin fee attack preventable?

I don't think it is easily preventable but it is expensive and it would be difficult to prepare without being noticed and might be difficult to execute in a way that couldn't be detected and countered,...
RedGrittyBrick's user avatar
2 votes
Accepted

How is spamming of the block chain discouraged by the Bitcoin protocol?

It's not really. Of course there are transaction fees, but in the situation you describe, where blocks are not already full, the supply of available block space must be lower than the demand, and so ...
Nate Eldredge's user avatar
2 votes
Accepted

What's the best way to get rid of 1 satoshi dust?

In the current environment, I doubt that you can. Blocks are full these days, and the block space needed to spend your UTXO, whether as its own transaction or as one input of many similar ...
Nate Eldredge's user avatar
2 votes
Accepted

Why can't nodes have the relay option to disallow certain transaction types?

Very good question. There are important reasons to have the relay options, e.g. to filter or limit certain types of transactions and spam. Bitcoin Core already offers a few filters configuration ...
Greg Tonoski's user avatar
2 votes
Accepted

What effect on Lightning Network would be of setting dustrelayfee to 0.003 by all nodes?

The dustrelayfee is used to calculate dust thresholds. The change you propose would increase all dust thresholds by a factor of one hundred. This would make transactions with recipient or change ...
Murch's user avatar
  • 75.4k
1 vote

Other than for obvious spam, what is OP_RETURN used for in non-coinbase transactions?

The main use of op_return outputs is that junk gets written to op_return outputs instead of output scripts that are part of the UTXO set.
Murch's user avatar
  • 75.4k
1 vote
Accepted

How do I customize Bitcoin Core's mempool policy so that low value transactions (ordinals, BRC-20) are not propagated by my mempool?

The simplest patch for this is filter-ordinals.patch (aka Ordisrespector): https://gist.github.com/luke-jr/4c022839584020444915c84bdd825831 --- a/src/script/interpreter.cpp +++ b/src/script/...
Luke Dashjr's user avatar
  • 1,269
1 vote

How do I customize Bitcoin Core's mempool policy so that low value transactions (ordinals, BRC-20) are not propagated by my mempool?

If you want to keep running bitcoin core I think the easiest thing to do would be to add permitbaremultisig=0 and datacarrier=0 to your bitcoin.conf file althought I don't know how effective that ...
luke's user avatar
  • 69
1 vote
Accepted

Modifying mempool with an external program

Is it possible to detect stamps/inscriptions/brc-20 txs from the rpc method getrawmempool with verbose true? Yes. You could write a tool which periodically dumps the mempool and inspects the ...
Ava Chow's user avatar
  • 70.5k
1 vote

Did the Bitcoin network reduce spam?

Was there any research done to say if this actually occurred or not? No. It is, of course, impossible to prove a negative. However I consider it obvious that the sort of hardware used for botnets is ...
RedGrittyBrick's user avatar
1 vote
Accepted

Is Block 507570 a pure spam block?

looking at this particular example, there is many, many multisig tx, one after another. These multisigs require more signatures, and extend the space. Now one can try to be speculative, and say it is ...
pebwindkraft's user avatar
  • 5,086
1 vote

What's the best way to get rid of 1 satoshi dust?

You also can move your "non-dust" funds to another address and publish the private keys. Sometime someone will destroy these UTXOs :)
amaclin's user avatar
  • 6,770
1 vote

Who is spamming the bitcoin cash mempool and why?

Could be the one miner trying to drive up transaction fees. They collect them all so why not.
Dr Spork's user avatar
1 vote

Question about spam attacks

From my understanding, an unconfirmed transaction can be accepted into the mempool provided that it has a fee that is generally at least 5460 satoshi, which is set as default in the current version of ...
Pieter Wuille's user avatar
1 vote

Question about spam attacks

yes, but then the "spammer" hasn't really accomplished anything. essentially with spamming its either 1) you paid to get a "spam" transaction included in a block or 2) you paid nothing to get it in ...
hedgedandlevered's user avatar
1 vote

spam: Bitcoin address

Bit unclear, but sounds like nonsense. Put your address into a bitcoin explorer (like blocktrail.com) and have a look at all the transacions (hopefully 1 or none). Make sure there are a few ...
Jannes's user avatar
  • 6,344

Only top scored, non community-wiki answers of a minimum length are eligible