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Questions tagged [whitepaper]

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1answer
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What is the current state of the Hashcash protocol that is cited in the Bitcoin whitepaper?

I have been reading the Hashcash paper which is referenced in the Bitcoin whitepaper. I would like to know what is the current state of the Hashcash protocol and what are the services that are ...
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2answers
38 views

Are sellers more vulnerable to fraud than buyers when doing business?

The Bitcoin white paper says: Completely non-reversible transactions are not really possible, since financial institutions cannot avoid mediating disputes. ... Transactions that are computationally ...
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1answer
372 views

From where does the 2 hours limitation on bitcoin time stamp come?

Bitcoin wiki says that: A timestamp is accepted as valid if it is greater than the median timestamp of previous 11 blocks, and less than the network-adjusted time + 2 hours My question is why 2 ...
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2answers
43 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 ...
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1answer
27 views

is target a 256 bit field or a 32 bit field

first, do we talk about fields or values. is it correct to say that it is a 32 or 256 bit value ? or should we call it a 32 or 256 bit field ? Why do some authors like say that the size is 32 bit . ...
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2answers
18 views

what is the different between bitcoin network and the bitcoin protocol

protocol and network seem like two separate things. When peeps refer to bitcoin then it could mean protocol, software (what do they mean by that) or the network (what exactly do they mean by that ?) ...
0
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1answer
34 views

double spending , you can create money out of thinner air [duplicate]

I am a little confused about how doublespending is done. The basic case is basically creating transactions to the seller and yourself and simultaneously broadcasting those. This is the very classic ...
0
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1answer
48 views

what distribution does the hashrate follow?

Where can i find historical data for the distribution ? How does it fluctuate ? It is not constant, correct ? Mr Nakamoto in his white paper assumed it was constant ?
0
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1answer
47 views

in the white paper you have 2 sides : attacker and honest node

What does it mean that there is either the attacker or honest node. This means that within 10 minutes either attacker or honest node mines a block but what about neither OR another side ? How could ...
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1answer
41 views

what does it mean to have >51% hashing power for mining a block? [duplicate]

Can someone please shine some light on this and how it links to the analogy between honest node and attacker ? also can attacker start mining 2 blocks ahead ? or 3 or 4 blocks ahead ? In the white ...
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2answers
180 views

Possible error in the white paper Calculations section?

Section 11 presents calculations of the probability of double spending, P(z, q), given an attacker relative hash rate q and a block count z. P(z, q) can only be understood by knowing exactly what z ...
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1answer
97 views

At most two outputs according to Bitcoin whitepaper. Multiple outputs in real transactions. How come?

The original Bitcoin whitepaper mentions that there can be at most two outputs: Normally there will be either a single input from a larger previous transaction or multiple inputs combining ...
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1answer
100 views

Does the 100+ GB blockchain database contain every transaction?

Does the 100+ GB blockchain database contain every transaction since the beginning, or only a digest of them? I've read Nakamoto's paper and I see: the spent transactions before it can be ...
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0answers
74 views

Bitcoin Paper: Why do we need the probability of catching up in double spend attack?

In the Bitcoin original paper, we have two probabilities: 1- Probability of generating k number of blocks in the period T in which z confirmations are generated. 2- Probability that the attacker ...
1
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1answer
60 views

Is the asymptotic performance of bitcoin O(n) relative to the block chain length?

If I want the latest information (ie. account balance) of account A do I have to traverse the entire block chain to get that info or is the relevant information store in the latest block or some other ...
2
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0answers
293 views

Understanding simplifying payment verification

I'm studying the paper "Bitcoin: A Peer-to-Peer Electronic Cash System" and I've gone through many questions on this site. Still I cannot fully understand the contents of the Simplified Payment ...
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1answer
72 views

What if the bitcoin blockchain grows to the point it cannot be decentralized anymore?

I read the bitcoin white paper and am in the process of readin ethereum's. The second paper reads at one point : "Currently, this is viable for some desktop computers and not phones, and later on in ...
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2answers
190 views

When was the paper of bitcoin announced?

When examining about this, it is said that many are November 1, 2008, but on the other hand, there are sites that are on October 31st. Which one is correct?
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2answers
514 views

Why does only the earliest transaction matter for double spending?

On page 2 of Bitcoin paper, it says: The problem of course is the payee can't verify that one of the owners did not double-spend the coin. A common solution is to introduce a trusted central ...
2
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1answer
422 views

why verification of transaction after proof of work?

I have question about bitcoin protocol. In Satoshi's paper it is mentioned that: New transactions are broadcast to all nodes. Each node collects new transactions into a block. Each node works on ...
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2answers
122 views

Can anyone delineate a phrase in the Satosh's white paper?: limiting the minimum practical transaction size

Can anyone explain what the phrase below, from the Satoshi Nakamoto white paper, means? Introduction The cost of mediation increases transaction costs, limiting the minimum practical ...
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3answers
957 views

Where can I find the Bitcoin white paper in plain text markdown format?

Is there a place where I can find the Bitcoin whitepaper by satoshi in plain text markdown format?
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4answers
1k views

Is pruning transaction history implemented in Satoshi's bitcoin client?

The original bitcoin paper suggests a method to discard old transactions. One should compute the Merkle Tree of the entire transaction history, and store only part of the tree. However, I didn't ...