A simple bitcoin Q/A. Learn new and interesting stuff about bitcoin.

[wwzsocki]

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.

[elastiman]

Please bring back this contest it was fun!

[DesertOasis3]

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.

[bitmover]

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

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

[Betwrong]

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

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.

[pugman]

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

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.

[AverageGlabella]

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.

[CucakRowo]

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 :

• How to rebroadcast an unconfirmed Bitcoin transaction ?
• HOW TO REBROADCAST A TRANSACTION ON BLOCKCHAIN.INFO