The Stack Overflow podcast is back! Listen to an interview with our new CEO.

Questions tagged [coinbase-transaction]

The "coinbase transaction" is the transaction inside a block that pays the miner his block reward.

Filter by
Sorted by
Tagged with
1
vote
1answer
175 views

How to create a bitcoin transaction without inputs

How can I create a transaction without inputs and it will be broadcasted but of course won't get confirmed? I would like the simplest method to do this
1
vote
1answer
60 views

How to decode a coinbase transaction?

Below is block result of block height 200,000 { 'hash':'000000000000034a7dedef4a161fa058a2d67a173a90155f3a2fe6fc132e0ebf', 'confirmations':396774, 'strippedsize':247533, 'size':247533, ...
0
votes
1answer
25 views

reconstruct block template from stratum mining.notify

I have a mining notification from a stratum pool. I wish to write a general script to extract the value of the block reward that the pool is taking. That is, reconstruct the block template, or at ...
1
vote
0answers
13 views

Where are Drivechain votes computed?

In the context of the Drivechain proposal, for UTXOs in miner-controlled escrows to be spent, they have to be voted on by each block over a large number of blocks, right? Now, how are these votes ...
2
votes
1answer
124 views

Why does this coinbase transaction have two op_return outputs?

I've been looking at coinbase transactions for fun and I came across one with two op_return outputs.. Does anyone know what the second one is? Also, I understand the first op_return is used to ...
1
vote
0answers
14 views

BIP0034 block height using python-bitcoinlib

I'm doing some experiments for finding coinbase height from freshly mined block which is received from ZMQ. tx_coinbase = CTransaction.deserialize(x('...
0
votes
1answer
20 views

how recover my money in Coinbase Wallet?

I just wanna ask if there is possibility to recover my money in coinbase wallet. I forgot my recovery phrase but i remembered my btc wallet address and TXID. thanks
0
votes
1answer
24 views

Can a block have multiple coinbase transactions? Also is there a limit to the number of signatures a multi-sig transaction has or requires? [closed]

I am wondering if a block can be created with multiple coinbase transactions. The US government regulates mining pools that have control over the miner's wallets, so it would be fabulous if this could ...
2
votes
1answer
50 views

Can a miner give themselves less than the maximum block subsidy if they wish to do so?

The current maximum block subsidy is 12.5 bitcoin. A mined block recently got rejected from full nodes after a miner tried to post the block subsidy as 13.26 bitcoin. But what about in the other ...
0
votes
0answers
27 views

native support for coinbase/append in getblocktemplate

I'm trying to understand the "coinbase/append" capability outlined in BIP 23. Essentially, why is it not supported in bitcoin's getblocktemplate method? Does the capability not make sense in that ...
2
votes
1answer
42 views

When does miner insert the coinbase transaction?

When a miner creates the candidate block with transactions from the mempool, does he insert the coinbase transaction after winning the PoW or during PoW?
0
votes
0answers
87 views

should i can use my coinbase 12 backup phrase into blockchain wallet?

i have one question in my mind i can able to recover my wallet of coinbase using 12 backup phrase into blockchain wallet it will be accept it? and restore my all crypto of coinbase into blockchain ...
0
votes
1answer
92 views

Is Coinbase transaction required to be signed?

I am trying to build a coinbase for mining with the following steps: 1-Create dummy Input and output. 2-Pass them to CreateRawTransaction as collection/ 3-Get a transaction back and fill the empty ...
0
votes
2answers
117 views

What is the source of initial transactions of bitcoin?

Sorry, if I am wrong or silly! It is understood that: a) Satoshi Nakamoto sent the first transaction to developer Hal Finney on January 12, 2009, the genesis block contains 1,073 transactions and he ...
0
votes
1answer
58 views

Is there a maximum balance that a single address can hold?

Is there a maximum number of satoshis that a single address can control at a single time? I ask because when I generate regtest blocks to a single address, it's balance gets stuck at 1494999998350 ...
3
votes
1answer
67 views

What is the maximum number of bytes the coinbase scriptSig (coinbaseaux) can hold?

Since the scriptSig of the coinbase transaction of a block can contain arbitrary data, what is the maximum number of bytes it can contain? I've seen various mentions of a limit around 100 bytes, but ...
1
vote
1answer
247 views

Is there a way to create coinbase transactions with an RPC command?

Is there a way to create coinbase transactions with an RPC command?
1
vote
1answer
206 views

collecting block reward and transaction fees

i was reading document about transaction data and there seems to be two contradicting paragraphs: Every block must include one or more transactions. The first one of these transactions must be a ...
1
vote
1answer
62 views

identical coinbase transactions

this sounds like an old topic but i have not found a satisfying answer yet; in history there lived two blocks with identical coinbase transactions: https://www.blockchain.com/btc/block-index/106662 ...
1
vote
2answers
285 views

What is the purpose of the script like RETURN PUSHDATA(36)(…)

The example is in here: https://www.blockchain.com/btc/tx/63910fdfa84db96bd1f28fead4c32f97388d5368c10059d035aac3c5f72fcdc0 Actually, there are two outputs DUP HASH160 PUSHDATA(20)[...
1
vote
1answer
228 views

Differentiating Output Script (scriptPubKey) Types

I am working on a little script to breakdown the data inside coinbase transactions. This is largely to improve my understanding of legacy and SegWit transactions (Given coinbase transactions have less ...
3
votes
1answer
221 views

Why does Bitcoin block 526,591 have a 6.25 (instead of 12.5) block reward?

https://chain.so/block/BTC/0000000000000000002ba5a1fb96f93e6c215d62db4280f1cbd30e82c7c71fba https://blockchair.com/bitcoin/block/526591 It's an empty block (zero transactions), but the coinbase ...
0
votes
1answer
244 views

Variables in Coinbase Transaction & Decoding I/O Scripts

I just have a few questions to help better my understanding of the coinbase transaction. Example: ...
0
votes
1answer
122 views

How does the hash of a coinbase transaction differ for the same miner?

Based on the format of a coinbase transaction described here: What is the format of the coinbase transaction?, I don't see how the all the coinbase transactions for a given miner do not all have the ...
0
votes
1answer
57 views

I got a coinbase transaction and I don't know where it comes from

I received a small payment from a coinbase transaction, but I haven't been mining nor I have signed up on a mining pool. Does this happen when someone accidentally sets my address instead of theirs ...
1
vote
1answer
107 views

What does this comment in Chainparams.cpp mean?

There is a comment in the Bitcoin source code under src/chainparams.cpp /** * Build the genesis block. Note that the output of its generation * transaction cannot be spent since it did not ...
1
vote
1answer
48 views

Fail to encrypt scriptPubKey in testnet

I have the following testnet wallet address: 2MsQEtPJ6JJZszMYrD6udjUyTDFLczWQrv9 Which I am trying to encode as pubkeyhash to the coinbase TX in testnet. When i run decode58, I get this ...
2
votes
1answer
486 views

OP_RETURN in a coinbase transaction?

Hey looking at this transaction I'm confused why there are two outputs and why one of them is labelled with OP_RETURN
1
vote
3answers
389 views

Getting the wrong txid for coinbase transactions

I'm trying to hash transactions to get the txid. I get the hex values from blockchain.info. I get the correct hash for all transactions except for the coinbase when I hash it twice. Is there something ...
2
votes
0answers
103 views

In DASH, why is in the coinbase transaction sometimes the first output the masternode reward, and other times the second? [closed]

Example of the first output being a masternode reward Example of the first output being a proof-of-work reward What determines the order of the outputs in the generation transaction? As far as I ...
2
votes
1answer
63 views

Weird script stack entries at block #227837?

At block 227837 , the coinbase TX e35ca7413b61397a49551fea6ebb540988afcf4a2d0e750773d38eb11b138f40 has the following script: ...
0
votes
1answer
336 views

Where is the extraNonce in this coinbase transaction here?

https://blockchain.info/tx/c1669dabe1bcadf50c4b712e42da7b3d3152aef53752731b04a4f585dde6f5f2 The coinbase states this: ...
1
vote
1answer
191 views

Coinbase transaction data

Can a coinbase transaction contain only data: 03 - length and 030303 - coinbase itself, or should the coinbase itself contain the height of the block?
0
votes
1answer
93 views

Why do not all the coinbase texts have the block heigh in it?

The coinbase text of #511329 starts with a, #511330 starts with b, #511331 starts with c... (and so on until z), but #511426 for example starts with F, the next one with m, the next one with "... ...
1
vote
1answer
246 views

Why maturity rule on coinbase tx requires too many confirmations w.r.t an arbitrary tx?

For an arbitrary tx, it is often said that 6 confirmations is sufficient. However, maturity rule states that coinbase tx can't be spent until it receives 101 confirmations. Why do we have this ...
0
votes
1answer
195 views

A different way to create coinbase transaction

AFAIK when a miner succeeds in creating a block, he puts a special transaction (coinbase) in it which spends no input and sends a fixed amount of BTC to an address he can arbitrarily specify. Instead ...
1
vote
1answer
163 views

Orphan block payment maturity

I know that the outputs coinbase transaction can be spent only after receiving 100 confirmations. So is it that a miner who mined an orphan block receives the outputs of coinbase transaction but can ...
0
votes
1answer
52 views

Why is BTC transfer on coinbase taking 30+ hours? [closed]

I'm really frustrated from the really bad service of coinbase.com. I'm waiting for a transfer of 0.14 BTC for 30+ hours which is ridiculous! Customer support is totally missing, service is really bad. ...
0
votes
3answers
61 views

Is there a way to access transactions that happen inside exchanges?

For example coinbase is an exchange and so, their transactions are done off of the blockchain. They do however expose an API, which I believe should expose their own coinbase "blockchain" ...
0
votes
1answer
61 views

Spreading reward of a block over the miners proceeding it

Say I want to implement a rewarding scheme that spreads the reward of a block over its own miner and the miners that build on top of it. Is it possible? More concretely, say each of my blocks bring ...
0
votes
2answers
769 views

Why does won't my bitcoin transaction complete? It has thousands of confirmations

My transaction has over 4000 confirmations and has been pending for over 3 weeks in my Coinbase wallet. The money is not available and shows as "pending". What is going on? If it had 0 confirmations I'...
0
votes
1answer
364 views

Why is it so expensive to transfer Bitcoins?

I am starting with bitcoins and I want to buy some neo and ripple. Like every newbie I typed "Buy neo" on google, and a lot of tutorials say I can not buy directly neo, I have first to buy some ...
2
votes
3answers
593 views

How to read the transaction of a block?

Given this example block (it's the genesis block by the way): ...
0
votes
1answer
1k views

Can Coinbase Bitcoin network fee really be 50%

Ive just bough £47.81 of bitcoin. After fees i'm left with 0.00375837 BTC. I want to buy another cryptocurrency but the network fee is 0.00186539 so i'm left with only £24.41. Can this fee be ...
0
votes
1answer
560 views

Does GDAX use its own wallet to send Bitcoin on my behalf?

I am new to cryptocurrencies and Bitcoin specifically. I recently made a transaction by transferring some Bitcoin from my GDAX wallet to my Binance wallet. Here is my public key: https://blockchain....
0
votes
2answers
4k views

Coinbase purchase bitcoin transaction pending, why is it painfully slow to purchase [duplicate]

I have purchased bitcoin using coinbase app 3 hours ago and the transaction is still pending. Is it usually this painfully slow to transact on coinbase?
3
votes
1answer
5k views

How is 10% transaction fee possible for a bitcoin transfer from coinbase to another exchange?

I moved 0.01BTC from coinbase to another exchange and i got charged 0.001BTC for it. This is 10%!!. I understand concept of dynamic pricing depending on network crowding etc. However, how is 10% fee ...
1
vote
1answer
800 views

Just received a payment twice from coinbase

Edit: Looks like the error was with my wallet. When I contacted support, they said to have the wallet rescan the block chain. After doing that, my balance went back to 0. I'm new to bitcoin, but ...
1
vote
1answer
406 views

Why does the Genesis block coinbase input script push bits and the value 0x04 before the famous “Chancellor” message?

According to the Wiki, the input script of the Genesis block consists of these bytes: ...
0
votes
1answer
78 views

Can I download only a coinbase transaction at a specified block height?

I want to implement a client similar to SPV client. The client will download block headers and coinbase transactions. There is an api of downloading block headers such as getheaders. However, it ...