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Topic: A simple bitcoin Q/A. Learn new and interesting stuff about bitcoin. (Read 27371 times)

hero member
Activity: 994
Merit: 593
aka JAGEND.

Question: How do you rebroadcast a transaction and why do you do it?


You can re-broadcast in 2 ways
  • 1. Re-broadcast by paying
Using :
- BTC.com Transaction Accelerator
- Louis’s accelerating services
- BLOCKCHAIN.INFO

  • 2. Doing Manually

I did once doing re-broadcast using blockchain.info services.
Source of answers :

legendary
Activity: 1232
Merit: 1080
Question: How do you rebroadcast a transaction and why do you do it?

This entirely depends on the software that you are using to send/receive Bitcoin transactions because certain types of software allow you to rebroadcast the transaction within the software itself otherwise you will have to do it with third party tools. First let me tell you the reasons why you might need to rebroadcast a transaction. Simply put because you have not included the right amount of fees for it to get included in a block in the time that you want it to be confirmed which means that it will be hanging much longer than expect. A great example of this is when the spike of 2018 transactions fees actually skyrocketed for a period of time. Which meant that a lot of people were using the old transaction fees and would not have their transaction confirmed for a number of days instead of a few hours that they were previously used too. Fortunately some types of software such as Electrum uses Child pays for parent features which allow you to rebroadcast the transaction with updated fees but this needs to be enabled before the original transaction was sent. I think the latest version has this enabled by default.

If the software you are using doesn't have the option to use child pays for parent then you can do it using third party tools and possibly asking a mining service to include it within blocks they are mining. You do this by:

1. Go to blockchain.info and find your transaction.

2. Find and copy the transaction hash with the blockchain.info address (txid)

This looks like a bunch of random letters and numbers.

3. Copy the TXID into any of the following (fees may apply):

https://btc.com/tools/tx/publish

https://pool.viabtc.com/tools/txaccelerator/

There are many mining services which are offering what viabtc does and you can find them by either googling for "bitcoin transaction accelerator" or by checking the services board of this forum. These mining services are often not free to use or have a certain number of free requests per day.

Blockchain.info also offers a push transaction service but you will need the hex encoded bitcoin transaction ID instead of the plain ID.
legendary
Activity: 2383
Merit: 1551
dogs are cute.
Darn! I have been away for far too long.

Well I'm back for now, will get some Q's popping.
Question: How do you rebroadcast a transaction and why do you do it?

I will make one question. I hope pugman won't mind Smiley

Question:   what is coinbase? (Not the exchange or wallet)
Thanks for that BitMover, I don't mind at all!!!

I'll hand out the merits soon enough.
legendary
Activity: 3374
Merit: 2198
I stand with Ukraine.
I will make one question. I hope pugman won't mind Smiley

Question:  what is coinbase? (Not the exchange or wallet)

When assembling a block, miner includes coinbase transaction, the block reward, which is currently 12.5 BTC, which should go to miner's address in case of completing the block(finding a combination, nonce + all the other info in the block, so that the hash of the block is less than or equal to the current target) faster than all other miners. Coinbase has no inputs because it's a generation transaction which creates new coins from nothing.
legendary
Activity: 2352
Merit: 6089
bitcoindata.science
I will make one question. I hope pugman won't mind Smiley

Question:  what is coinbase? (Not the exchange or wallet)
jr. member
Activity: 144
Merit: 4
Can't believe this thread died off so quickly, it was a great way for people to try and increase their knowledge whilst getting a chance to add some merit. Please re-instate.
full member
Activity: 202
Merit: 101
★777Coin.com★ Fun BTC Casino!
Please bring back this contest it was fun! Grin Cheesy
legendary
Activity: 2744
Merit: 1708
First 100% Liquid Stablecoin Backed by Gold
What happened with this contest?

I see a question was asked two months ago and there are few answers but something happened because no award is given for the best answer and OP is not active anymore.

Will this be continued?

Such a contest could be a great source of information and an amazing education tool. I think there are many reasons to keep this contest ongoing.
full member
Activity: 336
Merit: 100
The bitcoin mempool is where unconfirmed Bitcoin transactions are stored.
It's a set of all all the transactions that have been broadcast but have not yet been added to a block by a miner.
Every node has its own transaction relay policy so there is no definite mempool, but different mempools for different nodes.
Please use text spinning tools next time while you are plagiarising some content. It is really easier to find out you have stolen these texts from websites and just posting here for merit. There is no way other than reporting you here : https://bitcointalksearch.org/topic/m.46786275
You will most probably be temp banned or permabanned sooner.

Sorry Sir, Plagiarism ruined your life  Sad
sorry sir

Do I learn more about your question? because I want to increase my ranking in this forum without any problems.

once again, I am sorry
legendary
Activity: 1584
Merit: 1280
Heisenberg Design Services
The bitcoin mempool is where unconfirmed Bitcoin transactions are stored.
It's a set of all all the transactions that have been broadcast but have not yet been added to a block by a miner.
Every node has its own transaction relay policy so there is no definite mempool, but different mempools for different nodes.
Please use text spinning tools next time while you are plagiarising some content. It is really easier to find out you have stolen these texts from websites and just posting here for merit. There is no way other than reporting you here : https://bitcointalksearch.org/topic/m.46786275
You will most probably be temp banned or permabanned sooner.

Sorry Sir, Plagiarism ruined your life  Sad
full member
Activity: 728
Merit: 169
What doesn't kill you, makes you stronger
Question #1: What is bitcoin’s Mempool? What does it do, what is held there and where is it’s physical location on the network?

The bitcoin mempool is where unconfirmed Bitcoin transactions are stored.
It's a set of all all the transactions that have been broadcast but have not yet been added to a block by a miner.
Every node has its own transaction relay policy so there is no definite mempool, but different mempools for different nodes.

                            From February... really?
jr. member
Activity: 154
Merit: 4
This isn't directly related to bitcoin, but I just thought people should know more about this. There have been proposals for bitcoin ETFs to the SEC, and got rejected at least twice.

Question: Explain what is an ETF and how it works?

Apologies for not being around for this thread. Have lot a personal issues going around.

ETF = Exchange Traded Fund. I had explained my other post.

What is Exchange Traded Fund:
Exchange Traded Fund most like stock exchange. Those fund use to be traded on stock exchange that's called EFT. From ETF you can track all tradable assets and you can trade from there. That means you can track price buy and sale to other investor through stock exchange.
ETF become most popular  due their low cost facility. There is many broker for buy sale assets. I just share my basic idea about ETF. If you want to know more details please visit Wikipedia.

How will be benefited crypto or Bitcoin holder's from ETF:
If U.S. Securities and  Exchange Commission (SEC) approve EFT application than many big investor will start invest on Bitcoin/crypto-currency. Because Bitcoin or other crypto-currency will consider like an asset. So crypto currency will be open diverse set of investors. There will be no restrictions for crypto currency. For that reason crypto currency price will increase rapidly. Those will buy Bitcoin or other crypto-currency they can track real time price from ETF and can sale to other investors.

However, what I understand that if SEC approve EFT than crypto revolutions will be unbelievable.  Most of crypto currency will be up trend. We can see currently just discussing about EFT on SEC board & price of Bitcoin on bulls run. We expect SEC will consider EFT application on middle of August.





Question: Explain the avalanche effect.

In  cryptography,  the  avalanche  effect  refers  to  a
desirable  property  of  cryptographic  algorithms,
typically  block  ciphers  and  cryptographic  hash
functions. The avalanche effect is evident if, when an
input is changed slightly (for example, flipping a single
bit)  the  output  changes  significantly  (e.g.,  half  the
output  bits  flip).  In  the  case  of  high-quality  block
ciphers, such a small change  in either  the key  or the
plaintext  should  cause  a  drastic  change  in  the
ciphertext.
If a  block cipher or  cryptographic hash function does
not exhibit the avalanche effect to a significant degree,
then it has poor randomization, and thus a cryptanalyst
can make predictions about the input, being given only
the  output.  This  may  be  sufficient  to  partially  or
completely  break  the  algorithm. Thus,  the  avalanche
effect is a desirable condition from the point of view of
the designer of the cryptographic algorithm or device.

(PDF) Study of Avalanche Effect in AES. Available from: https://www.researchgate.net/publication/304141002_Study_of_Avalanche_Effect_in_AES [accessed Aug 23 2018].


Directly copy/paste from Wikipedia. By the way people are going to research due to merit reward Wink. I just avoid him to report plagiarism as well he try to research.
Before critism me with plagiat...look at up comment about avalanche...all same word and i do search in google that word same with Wikipedia...and i search again with Paper research...cause i believe with word or sentence that build from someone or grup that has research about avalanche...and i give link better than Wikipedia...people can studi thiier paper research with avalanche....
newbie
Activity: 196
Merit: 0
Function of BIP 174 is helping to make and sign  block-to-block transaction. This is built for compatibilities client-to-client. And also make possible easier hardware wallet and offline wallet setting.

So BIP 174 is not protocol or layer 2 solution for off chain transaction but BIP 174 is a transaction format for  a transaction  that not ready to broadcast to the bitcoin network.
jr. member
Activity: 225
Merit: 2
BIP 174 is the advancement or improvement for bitcoin technology where bitcoin can be transacted offline. This said improvement is still on development phase and not yet launched official nor can be functioned now.  A lot of people specially bitcoin enthusiast can wait to see its full functionality soon.
full member
Activity: 490
Merit: 134
Sorry lads, don't yell at me,I am back. And I got a question.

Question: What is BIP 174? (Its gonna be out for bitcoin 0.17.0 version)



BIP 174 is upgrade for Bitcoin (BTC) has just been added to the official network repository (so it should in next version of bitcoin core).
Its use will take place in allowing the blockchain to support Partially Signed Bitcoin Transactions (PSBT) in the future.  If this is implemented soon (hopefully we will see it) then the implementation of this solution will enabled Bitcoin's blockchain to improve certain essential.
jr. member
Activity: 81
Merit: 3

Interesting question!
BIP 174 is a transaction format for transactions that are not ready to be broadcast to the Bitcoin network yet. I believe it will help us to send transactions without the need of immediate Internet connection. It will help for creating and signing on chain transactions and thus boosting the business of Cold Wallet manufacturers too.

I have a question too - How is it different from Lightning network ? (I mean technically)
newbie
Activity: 308
Merit: 0
Question: What is BIP 174? (Its gonna be out for bitcoin 0.17.0 version)

BIP is the Bitcoin Improvement Proposal. BIP 174 is the part of bitcoin’s official repository & he is potentially allowing the blockchain to support the famous "Partially Signed Bitcoin Transactions" (PSBT) in the future.
jr. member
Activity: 99
Merit: 1
Sorry lads, don't yell at me,I am back. And I got a question.

Question: What is BIP 174? (Its gonna be out for bitcoin 0.17.0 version)


BIP 174 has been created to only helps for signing and creating on a chain transactions. It also acts as a transaction that dont need to be broadcast yet on a bitcoin network.
jr. member
Activity: 144
Merit: 4
Sorry lads, don't yell at me,I am back. And I got a question.

Question: What is BIP 174? (Its gonna be out for bitcoin 0.17.0 version)


BIP 174 will make it possible to perform transactions offline by a standard protocol that will have the facility for signing the transactions and then connect later to upload them to the Bitcoin Network. These transactions are known as Partially Signed and whilst still in the development phase, the flexibility it will offer would be of great benefit to Bitcoin in the future.
copper member
Activity: 2338
Merit: 4543
Join the world-leading crypto sportsbook NOW!
Question: What is BIP 174? (Its gonna be out for bitcoin 0.17.0 version)

The way I (layman) understands it, BIP 174 will allow us to transfer bitcoin from a cold wallet with a "partially signed transaction" without having to immediately upload that transaction to the bitcoin network.   Meaning we can use our (supported) cold wallet for purchases and transactions while maintaining it's security.  Transactions will be fully signed at a later time.

So, essentially it can make a cold wallet partially hot.
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