Linked Questions

1 vote
1 answer
308 views

Why does everyone talk about the blockchain being a record of transactions if it’s just a hash?

I’m trying to get to know how cryptocurrency works and everyone treats the blockchain like an active record of every transaction, like if someone wanted to reuse the same bitcoin with the same code ...
Johnafoon's user avatar
0 votes
2 answers
87 views

Transaction blocks vs bitcoins

Sorry if this question is too basic or if it has somehow been answered before... My understanding is that any type of Bitcoin block must be first mined, which applies to transaction confirmations, for ...
Julius Lerm's user avatar
-1 votes
3 answers
135 views

How 2 chains co-exist together?

I am not able to understand, how 2 chains co-exist together, like these were the observations which are ambiguity for me: In one reading I have read, Only longest chain is valid and and rest chains ...
Arjun Reddy's user avatar
0 votes
3 answers
149 views

How does Bitcoin prevent double-spending without penalizing miners?

In the network nodes below as shown in picture: Let's say A is trying to double spend by sending bitcoins to B,C (A->B) and (A->C) and let's say A tried to relay (A->B) transaction to honest ...
Arjun Reddy's user avatar
1 vote
2 answers
330 views

How do transaction verification and adding a block to the blockchain fit together?

I have the below questions: How is a transaction added to a block? Do miners get a reward for adding a transaction to a block? How is that block then added to the blockchain? If everyone (miners) are ...
Tanzeel Malik's user avatar
1 vote
1 answer
245 views

How and when do nodes stop broadcasting a transaction?

Suppose a node begins broadcasting a signed transaction. Question 1. At what stage is the signature verified? In §5 of the whitepaper, verification only appears during block acceptance after mining. ...
user516728's user avatar
4 votes
1 answer
195 views

What previously existing technologies made Bitcoin possible?

When watching a tutorial, they mentioned that Bitcoin is based off 4 or 5 technologies that existed for at least a decade before Bitcoin. Satoshi Nakamoto was the first person to combine them all into ...
tjr226's user avatar
  • 185
1 vote
0 answers
32 views

Is bitcoin client really downloads the full transaction info? [duplicate]

I started learning bitcoin and found this wiki: https://learnmeabitcoin.com/beginners/network And there is this statement: When you run the client it will connect to other nodes and start downloading ...
Fun Coder's user avatar
0 votes
2 answers
211 views

Is it true that all the bitcoins in existence are on the blockchain (the ledge), but it just depends on who the owner (address) is?

It seems that for the 18.5 million bitcoins generated, plus even the 6.25 bitcoins that were rewards just 10 minutes ago, are all recorded in the blockchain (the ledger), but it just depends on who ...
nonopolarity's user avatar
3 votes
2 answers
673 views

Difference between crypto coin vs crypto block?

I have several doubts about cryptocurrency when I started(bitcoin) reading about it. I google it around and it only added to more confusion. I am not able to understand the difference between a ...
Sreeraj Chundayil's user avatar
4 votes
2 answers
1k views

What happen if some blocks are added simultaneously with same previous hash

In all of the blockchain samples that I see e.g. adilmoujahid, Savjee as I checked, they added previous Hash by creating a block. Suppose that, L is the current last block in a chain. Block A and ...
masoud2011's user avatar
0 votes
1 answer
36 views

Number of main chain in a blockchain network

I just have a very basic doubt. Suppose there's a public blockchain network like Bitcoin comprising several nodes. Would it be possible that this network consists of multiple mainchains??I am not ...
Mainak Sikdar's user avatar
1 vote
0 answers
223 views

How does the bitcoin network remove duplicate blocks being generated by multiple miners?

Say there are two minersA&B and each of them have produced the next block almost at the same instant. In this situation how is the network going to decide which one is the main block and abandon ...
Mainak Sikdar's user avatar
0 votes
2 answers
214 views

is every Block of blockchain is connect to each other? [duplicate]

like as we create a new block , so it will connected to existing Blockchain or it will create a new blockchain?
Kriti Joshi's user avatar
0 votes
1 answer
53 views

Blockchain / Bitcoin / Previous address / Next address

New to learning about the Blockchain ... The Blockchain requires a Token for use. It is my understanding that the Token (or rather the code implementing the Token) is responsible for filling up the ...
Casey Harrils's user avatar

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