1
vote
1answer
34 views

Do all Banks and Credit Unions in the U.S. accept Bitcoin?

Do all Banks and Credit Unions in the U.S. accept Bitcoin for deposits or withdraws?
1
vote
1answer
164 views

The number that generates the private key, is it stored somewhere?

I understand that the private key is generated with a random number Specifically, any 256-bit number from 0x1 to 0xFFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFE BAAE DCE6 AF48 A03B BFD2 5E8C D036 4140 ...
0
votes
1answer
23 views

Can more transactions be processed within a centralized bitcoin exchanges than in the rest of the bitcoin network?

I've heard that centralized exchanges are more efficient, and that a centralized bitcoin system as a whole would allow for more transactions to be processed. Does that mean that within centralized ...
0
votes
0answers
12 views

stratum server segfaults

I keep getting this segfault, but not sure why. Running Ubuntu 14.04, 128GB RAM, Intel(R) Xeon(R) CPU E5-1650 v3 @ 3.50GHz, 12 cores The stratum code I'm using is: https://github.com/tpruvot/yiimp/...
0
votes
0answers
58 views

Created receiving address in Bitcoin Core but deleted it before receiving bitcoins

I created a receiving address in Bitcoin Core, sent myself some coins from localbitcoins.com and - silly me - deleted the receiving address from Bitcoin Core. tradeblock.com shows the transaction ...
2
votes
1answer
50 views

what is the relationship between bandwidth and hash rate?

What is the relationship between bandwidth and hash rate? I have an AntMiner S4 mining at 2.1GHashes. I understand that the miner has no hard drive, and does its operations purely in memory, and that ...
0
votes
2answers
41 views

How private key is generated?

I read here that: If you could process one trillion private keys per second, it would take more than one million times the age of the universe to count them all. Even worse, just enumerating ...
0
votes
1answer
27 views

Regrouping accounts belonging to same user

I am analysing some BTC transactions for academic purposes. As part of that work, I would like to identify users with several accounts and regroup them under a single identifier. I have assumed that ...
2
votes
2answers
165 views

When we can agree on mempool sorting order, we can just confirm first n-transactions that are at least 10 mins old. What's missing?

When we can agree on a mempool sorting order, we can just confirm first n-transactions (or 80% of transactions) that are at least 10 minutes old. Then, we can transfer (broadcast) the block header ...
0
votes
0answers
15 views

Accessing bitcoin wallet electrum

I created a bitcoin address, and had someone send bitcoin to it, and then tried to set up a wallet in electrum for that address. Unfortunately, in doing that I was only able to create a 'watch-only' ...
0
votes
3answers
68 views

Which bitcoin wallet allows me to generate and export a large number of addresses?

I need a software Bitcoin wallet (not web account based) that allows easy generation of many new payment addresses at once that are ideally stored in plain text, (bulk exported as plain text). The ...
0
votes
1answer
34 views

Can the system of votes (of Stack Exchange) be considered as a blockchain?

When discussing with a friend about blockchain, he told me that he read an article about using blockchain in management: people can vote on somebody else's work, so that he can gain reputations points,...
1
vote
1answer
61 views

How to get transaction with Bitcoin Core?

I've have a fully tx index node in v.11 and I can do the following below just fine, bitcoin-cli getrawtransaction c6556ca7e143d108f5ef594057ff83a78bceb4b5fdc565ae160b4783cddad00f but with a fully ...
0
votes
1answer
28 views

Sent wallet to desktop [duplicate]

I had bitcoin core and dummy me deleted it but I sent my wallet to desktop and now I have a new wallet, are there any way to get the wallet that is on my desktop back into bitcoin core? I tried to ...
-1
votes
0answers
13 views

How much money would this miner make? [duplicate]

Bitcoin Miner Antminer S5 1155GH It's being sold for $200 in Indonesia. Should I buy it?
3
votes
1answer
41 views

How or why “a Bitcoin address is a single-use token”?

In the address wiki page it says that "a Bitcoin address is a single-use token". Do I have to understand one address is (or should be) used only once? More over, the Address reuse page seems to ...
1
vote
2answers
29 views

How are transaction fees claimed from a technical point of view?

A typical transaction has one or more inputs and one or more outputs. Since there is no amount specified for inputs, the rule is that ALL of the inputs is always transferred. Any discrepancy between ...
4
votes
3answers
389 views

How do miners understand what a transaction does?

Bitcoins are spent via transaction scripts that can be quite complicated. How do miners understand what a transaction does? A miner has to decide whether to include a transaction in their block, but ...
0
votes
1answer
17 views

What type of power supply do Gridseed G-Blade need?

I have recently purchased 2 Gridseed G-Blade Miners, not realising the power supplies didn't come with them. Do I need a specific PSU to power them? Or can I get an AC adapter and plug them straight ...
5
votes
0answers
144 views

The incident with 92 billion bitcoins

There is a documented case from 2010 when a block with 92 billion bitcoins was discovered. The bug was found and software was patched within 5 hours and everyone had to "hit the load button" to an ...
0
votes
0answers
19 views

Problem while trying to transfer all my btc to another wallet [duplicate]

I was trying to move all my btc to a new wallet, so I sent all my available btc from my bitcoin core wallet to a localbitcoin.com wallet, but as far as I can understand, I didn't send the fee by doing ...
0
votes
1answer
14 views

RippleAPI how to issue IOUs using preparePayment

I'm trying out the API, and I've set up one 'user' account, and one 'gateway' account. The only difference between the two is that the user has extended a trustline to the gateway account. I would now ...
3
votes
0answers
35 views

What is the composition of transaction types in current blocks?

What types of transactions do we see in blocks today and how much of the blockspace do they occupy? I.e. does someone have data how much of the blocks are Pay to PubKey Hash, Pay to PubKey, Pay to ...
0
votes
2answers
41 views

Recover bitcoins?

I was using MultiBit HD and it was working fine till somehow my kaspers key start to delete it. Then i installed Bitcoin Core without knowing anything about it. and it started to downloading bitcoin ...
0
votes
0answers
35 views

Data on illicit activities for machine learning

Is there any published data on fraudulent transactions? E.g. has the FBI published a list of blacklisted addresses from the Silk Road controversy? This is in regards to using such data for machine ...
0
votes
0answers
20 views

Can't delete an old version Bitcoin-QT mac OS X

I've downloaded an updated version of Bitcoin Core. But the old Bitcoin-QT version v0.8.6 is still shown in my programs. When I click this program it says that it can't be opened. I can open the new ...
1
vote
3answers
54 views

How a block is defined (size, number of transactions)?

While exploring the Blockchain.info charts, I learned that: The average size of blocks is increasing (max=1MB). The number of transactions in one block is also increasing. After reading some ...
0
votes
0answers
34 views

Transaction code that will create a customer invoice and process a sendmany

I am looking for transaction code that will have multiple output, including an opreturn that I can send to a customer as an invoice who signs the transaction. In other words, I want to create a ...
1
vote
2answers
147 views

How can the number of unique addresses decline?

Blockchain.info has various charts over time, including one for "unique addresses". They do not explain what it means, but presumably it is the number of unique addresses that appear in all ...
3
votes
3answers
41 views

Can an intermediary block be lost?

Since the blockchain is stored in a distributed database, is it possible that one block can be lost? Then it would be impossible to link future blocks to previous blocks. How many copies of the ...
3
votes
1answer
24 views

How to import wallet.dat.txt file, to convert a txt document into usable BTC?

this will be my first time posting here so please forgive any newbyness. A friend recently gave me an old thumbdrive with a wallet.dat.txt file on it. He had bought a full BTC but didn't know what he ...
3
votes
1answer
41 views

Bitcoin core: boostrap.dat trade-off with “Synchronizing with network…”

Being, now, aware that users of Bitcoin Core (v0.12.1.0-g9779e1e) are no longer to use a torrent download of a bootstrap.dat and, instead, are admonished to simply launch Bitcoin Core and permit "...
1
vote
1answer
21 views

from b58check to hex and back

I am manipulating (with pybitcointools) some regular addresses as well as some P2SH and stumbled upon the following: Case 1: >>> b58check_to_hex('17rq8m5SW8XoZ9dHEkQyBfc5w2XQnQvznz') '...
0
votes
0answers
13 views

Bitnode returning 403 error when checking an address

When I try to use https://bitnodes.21.co/#join-the-network as recommended by Bitcoin.org to check if my full node is responding to inbound transactions I get a "403" error as follows: (Note that I ...
4
votes
1answer
53 views

How do traditional transactions take place (paypal, banks, etc) in comparison to Bitcoin transactions?

Here we talk about bitcoins and blockchain. It is said they are more secured, and people ask questions about how they are implemented. Since I am a complete newbie to blockchain, and I don't know ...
1
vote
1answer
50 views

Unconfirmed transaction since 2 days [duplicate]

2 days ago I've send some btc from my Bitcoin wallet called Bitcoin-QT(Version v0.8.6) to my Kraken account. But it is still unconfirmed and still don't see anything on Kraken too. Last week I did ...
0
votes
1answer
54 views

a problem of my bitcoin-core

My BTC wallet was bitcoin core ver. 0.12.1 After sending my BTC to another address, and waiting for two days status was 0 confirmation, maybe be because the transaction fee was not enough, So I ...
0
votes
2answers
35 views

transfer my bitcoins

I'm trying to get my bitcoins that I bought years ago, but my Bitcoin QT never synchronized to receive! I have now downloaded bitcoin core and I was informed that once I did it should automatically ...
1
vote
0answers
22 views

How does the Coin Selection in Bitcoin Wallet for Android work?

What is the algorithm in Bitcoin Wallet for Android to select the inputs to create a new transaction?
1
vote
1answer
74 views

How can one reinitialize the HW.1?

I've got a HW.1 a while back at a conference without any additional information. I had played around with it a little bit then, but didn't intend to use it as a wallet immediately. Now, I've been ...
0
votes
1answer
28 views

I tried to run bitcoin core and it is gone. Has anyone experienced this?

I tried to run bitcoin core and it is gone.The folder is still there, but the exe is not there. Does that mean the local wallet is gone as well?
2
votes
1answer
76 views

bitcond v0.12.1. “UpdateTip: 6 of last 100 blocks have unexpected version”

I replaced my bitcoind from v0.11.2 to v0.12.1. Then I found "UpdateTip: 6 of last 100 blocks have unexpected version" in debug.log. This error occurs at new block generation. Can I ignore this? If ...
1
vote
1answer
43 views

Takes longer to download newer blocks?

I have been downloading the blockchain to a new client and it has been at it now for almost a week. One thing I notice is that as it is getting close to the end, it is slowing down a lot. For example,...
0
votes
0answers
25 views

Stuck trying to set up MultiSig wallet in Electrum

I installed Electrum on both my pc and android, and on the pc I told it to create a multisig wallet. It wants the other master key. I created another wallet on android hoping I could use the master ...
4
votes
2answers
55 views

Is there a Bitcoin testnet that is really small so you can quickly download the blockchain and test stuff?

Is there a Bitcoin testnet that is really small so you can quickly download the blockchain and test stuff?
0
votes
1answer
22 views

Can you combine 2 of 3 brain wallet addresses to form a multi-address?

Is there a way to use 2 of 3 brain wallet addresses to create a multi-signature address? How can this be done? I was hoping to do this with warp wallet if that is possible or not. I'm assuming it ...
0
votes
1answer
22 views

Transferring Many Bitcoins without restoring a seed..Read

So I was thinking about how would someone transferring a handful of bitcoins say 10 or so to a new hardware wallet. so the situation is this. Say you have 10 coins and want to transfer those coins ...
1
vote
2answers
155 views

Since the blockchain is public, how can we see it?

The blockchain is a shared public ledger for Bitcoin. What does that mean exactly? Is it possible to see, publicly, all transactions? For every bitcoin a person owns, is he able to see all the ...
1
vote
1answer
48 views

How can I convert a bitcoin private key (hex) into a Bitcoin public key? [duplicate]

How can I take a bitcoin private key encoded in hex: d1d9a2e9fd3da7e7710310ea17a9edff9e08845c7a6f2ea3d650ba4ae7ee0d3b and convert it to the corresponding public key: ...
0
votes
0answers
26 views

Redeem input script without signature

I am trying to make a strange transaction which can be redeemed by solving a simple math problem, e.g. square root of 2. With the answer the student should be able to unlock the input and claim the ...

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