All Questions

The blockchain consensus seems to be very related to the Game Theory, when each participant tries to achieve their "favorites", where defining "what favorites means" is not very easy, since a ...

I am thinking about how to secure your Bitcoin savings. One idea I had was to create sort of a "backup" address B for an address A which stores the bitcoins. So what I want to achieve is that you ...

Guyz, i am a web developer, i have single pc but i am thinking to add a good GPU in it, my question is that if i add good GPU, will i be able to mine crypto currencies like BTC/ETH and work on my pc ...

I am using a bitcoin Non-deterministic wallet created by a private firm. In which there are few bitcoins worth 100$ Somehow I clear data of the android App, and Now all the memories related to my ...

I am not dealing with Bitcoin. I received the following e-mail. ”　I am well aware XXXXXX one of your password. Lets get straight to purpose. You do not know me and you're probably wondering why you ...

https://github.com/bitcoinbook/bitcoinbook/blob/develop/ch06.asciidoc In the original bitcoin client, the unlocking and locking scripts were concatenated and executed in sequence. For security ...

I am reading the book "Mastering Bitcoin" and have finished reading Chapter 2 and 10, but I still don't find the answer. Suppose the current main chain has 5 blocks: B0 <- B1 <- B2 <- B3 &...

Currently I could see 1418 ldb files on my box, from 210040.ldb to 215423.ldb (some missing). Why are they separated in this way? I want to read the leveldb using golang, but I don't know which one ...

We can read the following: People that run Bitcoin Classic are urged to migrate to any of the alternative wallets or nodes. And I am serious about this because the recent versions of Bitcoin ...

I have antminer s9 , I visit this , but I wanna know how difficulty impact my profitability in the future ? and estimate break even cost ?

Let's imagine: We have just one BTC address. Users send some coins to this shared address. And can spend only own inputs. P.S. If someone can provide some example script for this I'll be very ...

I set dbcache=4000 in my bitcoin.conf file, but where can one confirm if this took affect or not in the gui? I'm on ubuntu 18.

A lot of bitcoin exchanges require some minimum amount of confirmations before they consider money deposited. Is there any evidence that this actually does anything? Has someone ever before ...

I would like to create a Bitcoin Wallet. Part of the process is to store public and private keys in encrypted form in server database. All keys I am storing is encrypted using user's passcode. 1) ...

as you know there is two main type of wallets: full node and light node I've read in some advice that just using full node for more security stuff and the next question is what is the type of ...

Is it possible to : I sent BTC to A from Address1 and I asked him to send me BTC (different amount as I send him) to Address1 (same address with I sent him before)..?

Yes, I am a Noob. Getting acquainted with bitmining before I move up to big rigs investments. Learning rig is a RPI 3 B+ with Bitmain ASIC eruptors. Using BDGminer and get connection and hashes with ...

I am trying to unwrap bitcoin transaction generation process. A bit confused about signing part. My understanding is the transaction is sha256'd, then sha256'd one more time, then ECDSA'd. Based ...

I'm using and antminer s9, with bmminer software. It is based on cgminer, and has an option for --load-balance strategy. If i understand correctly, what this strategy does, is it gets and sends ...

Currently, Monero transaction fees are an average of ~.00001 XMR for a private transaction. What are the fees for a Zcash transaction when doing a transparent transaction and a ztransaction for ...

Is there a way to use API to find the circulating supply of Ardor or any of the child chain tokens?

I know this was probably brought up before but I cannot find any good resources on some potential, at least theoretical way of achieving this. So basically I have a lot of UTXOs whose value is ...

I had made new POS based altcoin for learning purpose, now i want to update it's version and build date which is right now showing to be that of the Okcash which i forked to make new POS based Altcoin....

I'm getting error after make command like, undefined reference to `BlockAssembler::BlockAssembler(CChainParams const&)' and in last Makefile:774: recipe for target 'all-recursive' failed make:...

I am writing transactions manually and have stumbled across a rather bizarre situation. Only one in a few of the transactions I broadcast to bitcoind is accepted, otherwise I get a REJECT_NONSTANDARD ...

I am trying to set up a new Bitcoin full node and my institution ISP is trying hard to not give me a static IP address for this purpose. I guess because of the concern that the node will be DDoSed, ...

I really have no idea how to aks it right. Let me give an example: We have a some peoples A,B,C,D.... And A makes transaction to B, then A need to pay to C, then send some coins to D, etc... After ...

$ ./electrum-3.2.3.exe --testnet setconfig rpcport 7777 true $ ./electrum-3.2.3.exe --testnet setconfig rpcuser blah true $ ./electrum-3.2.3.exe --testnet setconfig rpcpassword blah true $ ./electrum-...

I'm using bitcoin core to handle receiving and sending btc on our payment system. The following is the abridged version of our script: bitcoin-cli importaddress 3PK472dtKHTrPus7TGvXVdV6EwvxAufgUj ...

Just wondering what the output from gettransaction (or should I be using getblock?) would look like if I passed it a txid(or blockhash) that contained a set of transactions that exploited the double ...

my goal of questions this is why any wallet not able to compute private key created with public key generate?

I know my 12 word phrase but can't remember the encryption password. What is the procedure to recover the wallet? How many times can I insert the encryption password wrong before my account gets ...

When reading the BIP 44 proposal I stumbled upon this paragraph about address discovery: We scan just the external chains, because internal chains receive only coins that come from the associated ...

After placing a market order, I got its order_id & checked its status via this end point /v1/order/status and I got the following: Array ( [id] => 18141116927 [cid] => 43611135723 [cid_date]...

I am using electrum wallet and took from there extended master public key. Than using that xmpk I have generated addresses. Now I have sent some test coins and can not recieve in my electrum wallet. ...

Given that the majority of bitcoin processing is done in China (source: https://bitcoinmagazine.com/articles/report-links-74-bitcoin-mining-china-sees-threat-network/), is it possible for a single ...

I run a node on my own server ,and i am using the bus.on('bitcoind/addresstxid') event. When there is a new unconfirmed transaction that sent from an P2SH address, i don't get a notification on ...

When we buy/ sell bitcoin through some exchange say "Koinex in Indian context", what is the process i.e. actually followed ? 1. Does exchange communicate to node(s) in the bitcoin blockchain thru my ...

How can i transfer a money with php from one bitcoin wallet to another? I've search enough on stack, i know i can use third party api like blockchain.com api & block.io api , but they do not let ...

I am running: bitcoin-cli getbalance username 1 It is returning -37.01 How is it possible for an account to be negative? Is this a bug or do I need to add stricter security when performing a send to ...

I'm trying to implement an authentication process similar trezor connect but i'm unsure what i'm doing wrong. I'm trying to validate the signature using the official implementation here: https://...

Have you encountered the error - "txout.nvalue negative" when trying to mine the first block using the command "setgenerate true". I am stuck over there. This is on a PIVX fork.

i was scammed. he created my bitcoin wallet and he said he will put my earning from iqoption trading in it.i have my password of my wallet in which i change already...but the thing is my money appear ...

After mining some blocks as premining and once POS is started, is it possible to stop the chain altogether (turning off all the nodes) and restart at some point in near future? From the technical ...

I have a turkmenistan manat on my bank account. UNfortunatelly, that bank doesn't give me a credit card for it. THey just opened an account and put my turkmenistan manat on there. What should I do to ...

Hi i have test few time with gettransaction method, it seem only show full detail about transaction when send inside node. But if i send from another address outside my node, gettransaction only show ...

Is there any testing Sandbox for Bitrrex? How can I obtain the test bitcoin and purchase the ETH? Please advice.

I am making an altcoin from Litecoin. I am following this tutorial and successfully made an altcoin. https://www.youtube.com/watch?v=mDGxGYvkDEE But I have some doubts. Suppose I am making a coin ...

I am using these bitcoin build notes to build a QT wallet for windows using Ubuntu 16.04 subsystem for windows. At the final step when I use sudo make I receive the error: chainparams.cpp:92:57: ...

In lightning network, is the balance publicly announced in Real-time? From one hand, it should be public as it crucial to the routing mechanism. But, in case that the balance might reveal some ...