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1answer
6 views

How many zeros must be in a bitcoin share for a pool to accept it?

In the binary representation of the hash. Now the hash should be about 80 zeros. In the share - less, but how much exactly? At the dawn of bitcoin in a share, it was enough to have 32 zeros. Now the ...
0
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0answers
9 views

What happens to bitcoins that are in a ponzi scheme wallet?

I bought bitcoins that are stored in Cloud Token wallet. I found out later on that this crypto currency was part of a Ponzi scheme (shame on me). Currently I've had difficulty withdrawing my coins, ...
0
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0answers
16 views

My Bitcoins are lost in transaction

I sent my 0,1 bitcoin on the 8th of Januari from an offline wallet (Bitcoin Core), to an online wallet. Still haven't got the btc in my new wallet. The status on the offline wallet says: ''unconfirmed,...
2
votes
1answer
19 views

Positive or negative private key of a bitcoin wallet?

Private key is a number. Is the question positive or negative? Is it possible to know a positive private key or negative if you only know the public key? For instance: Positive private key: 2 ...
0
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0answers
10 views

Which is the suitable simulator for showing that transaction throughput has been increased while changing transaction structure in bitcoin blockchain?

I am working on a research in bitcoin blockchain where I am making some changes in conventional transaction structure of bitcoin blockchain. Due to this, it helps to increase the transaction ...
0
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0answers
12 views

Finding Hyperledger Projects [closed]

Please, can anyone direct my to projects built on Hyperledge Sawtooth and Burrow. Or the Hyperledge developer communities
0
votes
0answers
17 views

How to transfer bitcoin to other wallet [closed]

I have my few bitcoin in the website with the bitcoin address. And i want to transfer to other working wallet. Problem is the website is not opening its page. The name of website is https://tradebrite....
0
votes
1answer
21 views

Storing Provenance details in Bitcoin Blockchain

I am quite new to the blockchain and bitcoin world. I was looking at some ProofOfExistance (PoE) solutions (Digital Notary) for documents. While these solutions store the hash of document+timestamp, ...
1
vote
1answer
24 views

How do i differentiate between a scam and a real bitcoin miner?

Someone offered to trade for me through bitcoin. He said i should send a bitcoin to crytomine company then he is going to claim it from the company so that he trades it with a commission of 10% of ...
0
votes
0answers
22 views

I don't know how to use bitcoin [duplicate]

How can I registered for bitcoin trading? And secondly, I am a international business person and I want to know if I can transfer my money through bitcoin in any other currency to Euro? Thanks
2
votes
2answers
35 views

Are all three Bitcoin address types interoperable (legacy, segwit, native segwit)?

is it possible to send transactions back and forth between all 3 address types (legacy, segwit, native segwit-bech32)? Or is one of them not able to send to another?
0
votes
2answers
27 views

Bitcoin UTXO discrepancy in calculation

I'm trying to understand the following two sites that display UTXO information. If I can figure out the method, that would be a bonus for this question but if I can't can someone explain why the two ...
0
votes
1answer
28 views

Sweeping paper sweeping private keys from 2009-2010 into electrum wallet

I have several wallets from 2009 and 2010 that have not been touched since day one.I recieved 25 dollars USD worth of BTC for downloading and running a program in the background. Im guessing i was ...
0
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0answers
17 views

how to move my Bitcoin core wallet to electrum while syncing

How do I move my btc qt wallet to electrum while syncing? Not address by address. Removed some addresses already but I'm still missing some coins. Don't understand the discrepancy. Any help would ...
0
votes
1answer
20 views

Opening Full node

When I try to open my node this is the error that pops up "Error: Cannot parse configuration file: parse error on line 1: curl https://bitnodes.io/install-full-node.sh | sh." Does anyone know how to ...
-1
votes
0answers
19 views

Looking for a bitcoin seller [closed]

A friend is looking for bitcoins seller ( more than 250) Transaction in live with the customer in the middle east.
0
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0answers
21 views

Double spending problem 2.0

How is the following case handled in bitcoin blockchain? Initially Alice has only 2 bitcoins. Suppose Alice sends 2 bitcoins to herself(tr1 i.e. Alice to Alice) and then 2 bitcoins to Bob(tr2 i.e. ...
0
votes
1answer
15 views

How do nodes validate that a UTXO in a new transaction is unspent?

Does it check every block in between where the UTXO first appeared and the current time to make sure it didn't get spent then? Or is there some other caching or other method to make the check faster?
0
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0answers
14 views

Disecting bulletproof hex

I am trying to reconstruct the individual proof parameters of a bulletproof range proof in a Grin transaction. Here is an example transaction file I created on the testnet. https://pastebin.com/...
-1
votes
0answers
12 views

Error compiling with gitian can you help me? [closed]

I'm creating my own cryptocurrency and right now I'm trying to compile with the gitian the qt wallet for windows of it, but I've had this error from the beginning. Everything starts very well but ...
-2
votes
0answers
17 views

How to contact the technology experts?

I have a plan to make cryptocurrencies highly decentralized without POW. It could also be used for bitcoin. I posted the document on medium.com. It seems only a few person have seen in these days. I ...
0
votes
1answer
28 views

How can a reciever verify that transaction data was not altered by 3rd party?

My scenario: My web server: - Generates private and public, and a wallet address from the public key for a user website account - Server can not connect to the outside (Can not connect to the Bitcoin ...
0
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0answers
7 views

How can I do CDataStream to String to CDataStream conversion?

I'm developing a bitcoin application which saves Block to a file from which it can be read at later point of time. So I'm converting CDataStream vRecv to hex string using below bitcoin defined ...
2
votes
1answer
407 views

Bitcoin Difficulty granularity

Difficulty adjusts by very granular percentages to target for 10 minutes blocks. But adding another zero at the end of the chain of zeroes from the header hash requirement for a valid block would ...
0
votes
0answers
27 views

How do I build a blockchain/cryptocurrency that uses 4-8 bit encryption instead of 256 [closed]

I'm essentially trying to build a cryptocurrency in python with the same scheme as bitcoin or something else except instead of encrypting the information such as ledger information in a 256 bit SHA ...
-1
votes
2answers
55 views

Double spending problem in Bitcoin

Suppose Alice sent 2 bitcoins to Bob, Bob ships the product to Alice, then Alice sends 2 bitcoins to herself. Why is this a problem ? If both the transactions are approved then also Bob gets his 2 ...
0
votes
1answer
16 views

Transfer of BTC the wallet address p2pkh to wallet address p2sh

Is it possible to send BTC from wallet having address type p2pkh to the receiver wallet address p2psh
-4
votes
0answers
34 views

hOW DO i GENIRATEAN AN API? [closed]

I SENT BITCOIN CASH FROM MY COINBASE ACCT TO EMPIRE WITH THE BITCOIN ADRESS GENERATED TO ME FROM EMPIRE MARKETPLACE. IT SAID IT WENT THROUGH BUT IT DIDNT IT WAS REDIRECTED TO BLOCKCHAIR WHERE I DONT ...
1
vote
1answer
65 views

What is the length of largest known reorganization in bitcoin?

Usually there is an assumption, that a transaction is fully finalized after 6 confirmations, e.g. 6 blocks mined on top of the block, which includes given transaction. What is the length of largest ...
0
votes
1answer
36 views

Bitcoin core doesn’t see transaction

I’ve created address in bitcoin core from rpc and send some bitcoins on it, but my balance still zero. Transaction exists I’ve checked on blockchain info. Getaddressinfo returns “ismine”: true, but ...
1
vote
0answers
18 views

Is there a way to test Blockchain.info APIs? [closed]

I'm trying to set up Blockchain.info web APIs to notify me when I receive a BTC payment: https://www.blockchain.com/api/api_receive So say, if I generate a receiving address as such: https://api....
0
votes
0answers
29 views

P2MS transaction

I'm studying Bitcoin's Protocol and I want to replicate P2MS in regtest. Yes I know that I can use P2SH but I'd like to understand it more in depth. I Have 3 addresses P2PKH (A and B and C). A has 50 ...
1
vote
1answer
19 views

How does bitcore-node get its data?

I'm trying to understand how does bitcore-node, the javascript implementation of Bitcoin protocol, get its data? Can it connect to Bitcoin Core, the original C++ implementation of the Bitcoin protocol,...
0
votes
2answers
35 views

How to parse transaction script to address the correct way?

i am currently parsing blockchain transaction data from the raw hex blk00000.dat files downloaded by Bitcoin core. In order to validate, i compare my results with blockchain.info from time to time. ...
1
vote
0answers
23 views

Not receiving Compact Block even after 'sendcompact' message

I have setup a regtest net locally with 2 nodes. One of nodes generates blocks using 'bitcoin-cli generatetoaddress 10 ', sendcompact message was sent from other node yet it gets normal block(...
0
votes
1answer
28 views

How do i print bitcoin transactions from a mining pool in php [closed]

i would like to print out bitcoin transactions from a specific bitcoin mining pool not just a bitcoin address using php and a blockchain api or any other api here's all i have <?php $address = "...
0
votes
0answers
22 views

Can anyone issue USD on the Ripple ledger? [closed]

I'm reading through some of the documentation for Ripple and came across the following: Each trust line is specific to a given currency code. and In a sense, rippling is like a two-way ...
0
votes
0answers
20 views

How do the new KYC rules for Deribit apply to VPN users in the US? [closed]

I was just wondering what the new KYC rules enforced in Feb 2020 will effect VPN users in the US.
0
votes
0answers
7 views

How to compute minutely premium index for XBTUSD on Bitmex? [closed]

I am trying to compute the minutely premium index at 2020-01-23 17:24 UTC for XBTUSD on Bitmex. At this time, Mark Price = 8330.53, Impact Bid Price = 8339.5, Impact Ask Price = 8340.2836, Spot Price ...
3
votes
1answer
276 views

A security need for Bitcoin to fork to quantum resistant algorithm in a few years?

in just a few years I believe that quantums will exist that break asymmetric ciphers, and bitcoin is based on asymmetric ones like public-key-cryptography, correct? Symmetric algorithms are supposed ...
0
votes
0answers
11 views

Altcoin Transaction stuck in Mempool [closed]

I have a forked coin from litecoin source , the current nodes are running on codebase 0.8 of litecoin (which i know is old) , i am upgrading it to a newer 0.13.2 version codebase , while testing ...
0
votes
1answer
31 views

How can Server-less communication take place between clients?

I was thinking to design a application which is not dependent on server and can directly send and receive data to and from other clients.I learned it is possible with UDP but how can new users join in ...
0
votes
1answer
35 views

Mining pools communicating outside of network

Does anyone know of any papers / evidence of bitcoin mining pools communicating outside of the bitcoin network for financial gain? It seems plausible in practice, but I am not sure if that has ...
0
votes
1answer
44 views

Is it possible to mine using Asics on AWS?

As title says, I would like to know if mining with asics on aws is possible and how to do it? I don't mean profit because I don't really care and only do it for fun. Thanks!
0
votes
2answers
51 views

How can I know which user made which BTC transaction?

I am making an app, and I want my users to deposit BTC coin to my address which is an exchange address (I don't have the private keys). How can I know which user made which transaction? I have a way,...
0
votes
1answer
39 views

How do miners communicate in Bitcoin/ Decentralized Network?

1.)If there is no central authority maintaining database how miners differentiate among other miners. 2.)Do they have there own database which have details(Mac/IP address) of neighbouring miners . 3....
0
votes
1answer
33 views

Error while syncing with the blockchain on my Raspberry Pi

So I already have the node set up on my raspberry pi. This night the transfer of the Blockchain from my laptop to the raspi's hard disk finished. Now I am waiting for the blocks to match the headers "...
0
votes
1answer
38 views

How to transfer amount to wallet [closed]

My friend has a bitcoin on tradebrite.net/ website and the website is not launching or opening the page. how can he transfer his bitcoin to some working website or wallet.
1
vote
1answer
29 views

If I am on a fork, can the reindex parameter fix this?

I've been reading confusing information online about what the --reindex startup parameter does. This link is not clear to me. https://github.com/bitcoin/bitcoin/blob/...
0
votes
1answer
23 views

How Bitcoin Core calculate extended private masterkey from hdseed

I am testing a Bitcoin application, and to test the signing of transactions I use regtest with Bitcoin Core. But I have some problems, the first I have already published in a question that I still ...

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