8
votes
2answers
1k views

Why is the ledger public?

To me, banking is not a public thing. I don't want people to know what's in my bank account at what time, or who I sent money to. I know that I can make a new address for each transaction, as ...
5
votes
1answer
68 views

What is the wallet “word seed” that is commonly used in popular wallets clients and what does it do?

I've been using a pretty old version of Multibit classic and recently decided to upgrade. I tried out Multibit HD and Electrum and noticed that both have me set up a wallet with a "word seed". It's ...
3
votes
1answer
23 views

Armory - Change Amounts Not Showing

So I imported a watch-only copy of my wallet on the online version of Armory but my balance in the wallet is missing all the amounts I previously received as change. The transaction history clearly ...
2
votes
2answers
149 views

Changing a private key of a public Bitcoin address

I would like a way to change the private key of a public address, for this you'd of course require the current private key. Is this at all possible? I want to prove that it can be done, or prove that ...
1
vote
1answer
40 views

Why was the chain with the largest work chosen as the metric of consensus?

There seems to be a myriad of ways to find consensus (PoW, PoS, PoD, PoE and various other methods and hybrid approaches). What was the reasoning behind bitcoin being PoW and treating the chain with ...
0
votes
0answers
26 views

What is MaxBTC and what it represents?

I am trying to understand what is the phrase "MaxBTC" and for what is it used? I am new to bitcoins. Thank you very much.
0
votes
0answers
41 views

Lost my Blockchain Wallet ID and my Email account has been hacked.i do not have the access of my email. how can i get my wallet back? [on hold]

Lost my Blockchain Wallet ID and my Email account has been hacked.my blockchain id was in my Email but i do not have the access of my email. how can i get my wallet back?
0
votes
0answers
9 views

Multi HD transaction stuck for +48hours [duplicate]

I have made a bitcoin transaction for more than 100$ and now it is stucked, i guess it is due to a too small fee. Ive never had this problem before and always just used the default fee from multiHD. ...
2
votes
0answers
38 views

Getting started, how do I buy bitcoin [closed]

I live in Nigeria,probably a third world market. This would be the first in this region. Would like to strongly promote this exchange Inot these parts of Africa. Please help.
4
votes
0answers
33 views

How much testing is done on each pull request before it is merged?

Frequently after one pull request is merged, multiple other pull requests follow to clean up a problem created by the first PR Recent example: https://github.com/bitcoin/bitcoin/pull/7957 https://...
0
votes
0answers
16 views

Why don't transactions store 'account balance'? [duplicate]

I've been reading up on the topic of transactions in Bitcoin, and I don't understand why each transaction doesn't just store 'total amount in this address after transaction'. It's easily calculable by ...
1
vote
1answer
34 views

Is it possible to build mining reward pooling directly into Bitcoin?

Mining pools were formed quite early in Bitcoin's history. Since then, they have not been considered ideal because of more and more centralization creeping in. But it seemed the community has learned ...
1
vote
3answers
48 views

Accessing Testnet [duplicate]

Can i access the testnet without downloading the blockchain? im developing a software to do a testnet (later it will be in mainnet) transaction with a custom message embedded into OP_RETURN. if the ...
1
vote
1answer
55 views

OP_RETURN custom message in testnet transaction

I would like to do a bitcoin transaction in testnet by embedding a custom message in the OP_RETURN. do i have to download the bitcoin core client with and the block chain to do that? or can i use a ...
1
vote
1answer
29 views

Specification of Transaction Inputs - Bitcoin vs Ripple

In Bitcoin, the transaction inputs (UTXOs) are specified as a tuple (transaction index, vout) since there is no notion of an account in the bitcoin system and the address (pointed to by vout) alone ...
1
vote
0answers
21 views

Turing an old laptop into a bitcoin miner [duplicate]

So I have an old laptop that was passed down to me, and I want to turn it into a bitcoin miner, I don't have any experience with bitcoin mining; its got 2gb of ram and some pentium. it will be running ...
0
votes
1answer
53 views

Trouble with Kraken exchange [closed]

This is kind of messy. Originally, I forgot my password. Requested reset but had forgotten that I'd enabled 2FA and didn't know 2FA key. 2FA was disabled by support, allowing me to reset password ...
0
votes
0answers
21 views

What is the formula used to calculate the value of bitcoin-cli estimatefees?

Studying the output of bitcoin-cli estimatefees as a black box, the formula at work seems to be a moving average calculated over the previous X blocks. I cannot deduce X, nor if it is a simple moving ...
2
votes
2answers
59 views

What causes seemingly normal transactions to not be confirmed?

I seem to be having an issue with transactions lately. Here is the most recent one. I paid 0.0004 BTC in fees, and I see there are quite a few inputs, but this seems like a normal transaction and ...
3
votes
1answer
27 views

Why does bitcoin-cli return strange version numbers for blocks?

I've been looking at the version numbers of blocks, but I'm getting strange results from bitcoin-cli getblock. "version": 536870913 However, when I run the same command with the false option (to ...
0
votes
1answer
38 views

Help retrieving my old wallet

So i made my first bitcoin wallet with multibit a long time ago and it didn't require wallet words to create the wallet (aka i don't have wallet words for that wallet). I do however have the wallet ...
0
votes
2answers
38 views

Can I retrieve my Bitcoins when I only know my receiving address?

I lost my wallet identifier and mnemonic. What I only have is my Bitcoin receiving address, 1EAd1Qua6fzyenPeSMRxYcpbcKgYUBpxQ7. I also lost the "Welcome to my wallet..." message in my e-mail. What do ...
0
votes
0answers
23 views

Any working web-based embeddable bitcoin miners out there?

I have tried some embeddable Bitcoin miners, but the only working ones I have found require Java, meaning that it needs permission to run Java. Are there any working web-based bitcoin miners around ...
4
votes
3answers
75 views

Transaction with Multiple Inputs having Same Address

Why do transactions have multiple inputs with the same address? Is it because the amounts were obtained in the address through multiple separate transactions. Shouldn't the amounts be clubbed to a ...
3
votes
1answer
70 views

Why was Armory and Blockchain wallet removed from bitcoin.org?

I would like to learn from other's mistakes and avoid problems in the future. The page which shows available wallets is https://bitcoin.org/en/choose-your-wallet
2
votes
1answer
33 views

Questions about bitcoin(or other crytocurrency) to satisfy my feeble mind [closed]

After a few days of research and reading about bitcoin and ethereum, I got interested on investing in these. Just small amounts to try it out.. maybe $30 - $50 for starters. I'm from a 3rd World ...
1
vote
1answer
60 views

Smart contracts in bitcoin

Is it possible in bitcoin to start a smart contract preloaded with some amount of money. And if some other user is ready to pay to the smart contract a certain amount of money, the smart contract ...
3
votes
1answer
34 views

Is reliance on a UTXO Set provided by other users dangerous?

One of the largest hurdles in my mind to increasing the number of full nodes operating is the startup cost related to downloading the blockchain. A similar but less important (in my mind) issue is ...
0
votes
1answer
85 views

How do I cancel my BTC transaction (Unconfirmed for 5 hours)?

am using blockchain.info. You can see the transaction at https://blockchain.info/tx-index/7122f25e4d2e79d5a93cf3797de44b00625cb8407d49c9fce0434f9d3cf32a82?show_adv=true HERE IS MY OTHER TRANSACTION ...
1
vote
1answer
73 views

Transaction flagged as having a non-standard input

A few hours ago I've sent a transaction which is not being added to a block, and on blockchain.info it flagged as "non-standard input". I've used pybitcointools to create the TX. What is wrong with ...
3
votes
2answers
36 views

Can bitcoin node startup be secure without validating the entire blockchain?

One of the largest hurdles in my mind to increasing the number of full nodes operating is the startup cost related to downloading the blockchain. A similar but less important (in my mind) issue is ...
0
votes
1answer
44 views

can I use elements of the blockchain to protect the integrity of a leaderboard without central servers?

For a World of Warcraft community feature conception contest I've come up with something that involves a leaderboard. However, World of Warcraft addons are purely individual, so a centralize platform ...
0
votes
1answer
41 views

What does “proof of reserves” and “proof of liabilities” mean?

What is a brief way of describing what "proof of reserves" and "proof of liabilities" mean? What is their difference? I have searched and red but I havent got it yet. Is it done by an auditor? Is it ...
1
vote
1answer
44 views

Can receiving money make a transaction fail?

Scenario: Alice has a wallet A1bz (let's say these are the first 4 characters of the private key in wallet import format so we don't have to deal with too many characters) with wallet address 1A1 and ...
0
votes
2answers
48 views

Issue transaction without being online

Is there some way in which User A who could load a transaction onto the block chain and if some other User B who is willing to pay User A, without User A being online could release the loaded ...
0
votes
0answers
67 views

Bitcoind Internal Server Error

I'm trying to call bitcoind sendtoaddress with params : 18et8yw71yfxsQz99c5sHHEgYtR32kkfw 0.15161962 and there is an exception "(500) Internal Server Error." The wallet has sufficient funds ~30 ...
0
votes
1answer
34 views

DAO Dividends In Ether?

A friend of mine told me that The DAO pays dividends in Ether. I can't find this anywhere, but assuming that it's true, how is this possible that it pays dividends if a person purchases The DAO ...
3
votes
1answer
44 views

Delays in confirmation [duplicate]

I have a bitcoin transaction which still hasn't confirmed in the last 3 hours. Any luck on how to make it fast? I added the nominal 0.0001 fee that is common for all transactions.
0
votes
1answer
24 views

Why is Slush Pool recognizing my worker as offline?

Just wanted to try out some mining but when I press start on GUIMiner Slush Pool dosn't recognize it. Right now I can mine at around 60Mhash/s, is that to slow or is it any other problem?
3
votes
1answer
57 views

How can I set a fixed fee sufficient for transaction success in bitcoind?

I used to use sendtoaddress with bitcoind and a fixed 0.0001 btc transaction fee in the wallet UI to do the job and every transaction was sent without any problems. Since version v0.12.0 I can see ...
0
votes
0answers
30 views

Inconsistent Results with Blockchain Data API

I'm using the Blockchain API library (Python, v1) from blockchain.info available on GitHub. The blockexplorer.py module provides functions for obtaining blocks from the blockchain, specifically ...
0
votes
1answer
14 views

How to setup bitcoin network using regtest?

My question might seem really basic , but I am looking for help as to how can I setup bitcoin network using regtest?
7
votes
2answers
87 views

Spending output of a low-fee transaction by following with higher-fee transaction

Suppose I broadcast a transaction A with very low (or zero) fee. Normally, it would take a long time to confirm. Suppose, then I broadcast another transaction B that spends a (yet unconfirmed) output ...
1
vote
0answers
28 views

GetWork / Stratum

I want to try to use my Bitcoin miner (ANTMiner S4) to generate SHA256 hashes of arbitrary byte orders -- The first question is "is this possible?" If so, the best way I can see to do it is to ...
1
vote
0answers
36 views

Is there any library to process scriptSig script in transaction, and other scripts?

I'm trying to parse hex representation of scriptSig, in normal transactions there are variable int, r&s, pubkey. But some are really weird, like those ones: ...
1
vote
2answers
641 views

Does desktop wallet need to be online for the coins to mature?

Suppose, I've installed a new coin wallet, got synchronized with the network, now I've sent some coins to my wallet. Now, if I close my wallet (and stay offline), would it get maturity after X amount ...
7
votes
1answer
124 views

Can I retrieve my bitcoins from years ago that I never received?

How can I get hold of my bitcoins that never made it to my wallet years ago? I purchased some bitcoins years ago (have got my receipt and all emails from who I purchased). I downloaded Bitcoin-Qt 7, ...
1
vote
1answer
24 views

Issues Still With Import Backup dat.file

My computer has Windows 7 professional operating system. I have my Wallet now synced as up-to-date. I followed instructions from earlier post as follows: Then you have to localize your Bitcoin ...
3
votes
2answers
38 views

Does the `blocksonly` setting prevent other nodes from sending my node unconfirmed transaction, or does it simply cause my node to ignore them?

I've seen this option discussed, but I don't have a clear understanding of what is going on. Since this setting appears to reduce node bandwidth by as much as 88%, I assume it somehow communicates to ...

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