All Questions

0
votes
1answer
17 views

Transaction fee of 8.44 mBTC for 1.22 mBTC?

I made a transaction of 1.22242 mBTC with the electrum client and, I don't know why, it looks like it transferred all the remaining BTC from my account to myself which made a 13063 bytes transaction ...
-1
votes
0answers
11 views

How low can nPowTargetTimespan be set?

I'm working on a private peer to peer cryptocurrency by forking Litecoin. I can see a lot of suggestions that consensus.nPowTargetTimespan = 3.5 * 24 * 60 * 60; consensus.nPowTargetSpacing = 2.5 * ...
0
votes
0answers
6 views

listreceivedbyaddress missing transactions after restore

After restoring wallet from wallet.dat balance is identical, but listreceivedbyaddress 0 do not have the transactions associated with wallet. listunspent 0 show all the transactions, but it will ...
0
votes
1answer
8 views

Getting source address of a Tx message from it's signature script

I have a simple bitcoin packet which contains TX message. in a TX message, one of it's Transaction input hex data was like this: ...
0
votes
0answers
11 views

Finding target based on difficulty calculation

I'm trying to find the current target value, but it is not listed in any place. So far I found out that the only way to get target value is to calculate it from "difficulty" value, which is now: 6,379,...
0
votes
1answer
18 views

Detect types of ScriptSig and parse each part

As explained in https://en.bitcoin.it/wiki/Script there are many types of scriptPubKey and scriptSig like: <sig> <pubKey> <sig> <pubKey> <pubKey> <sig> <...
0
votes
1answer
11 views

can you use blockchain.info instead of hosting bitcoind for a website

If I use api calls to blockchain.info instead of hosting my own bitcoind for checking address values, is it safe?
2
votes
2answers
37 views

What if bitcoin has a bug?

If a fundamental bug is found in bitcoin does that mean that the only way to patch it would be a hard fork? I'm confused at how this software that only has one version is running for 10 years without ...
0
votes
0answers
11 views

How to integrate bitcoin address generator into website

I want to integrate a bitcoin accounts and address generator into my website, similar to those found on crypto exchanges. Users can generate addresses and have their own accounts. Is there an open ...
0
votes
1answer
19 views

How can Bitcoin protect itself from a “dumb majority soft fork”?

Let's say a majority of miners change to using software that prohibits timelocks. This would be a softfork, so the blockchain would still look valid to nodes using the previous software, however nodes ...
0
votes
0answers
8 views

How to recover from “failed with non-mandatory-script-verify-flag (Script evaluated without error but finished with a false/empty top stack element)”?

I'm getting: 2019-06-14T01:16:35Z ERROR: ConnectBlock(): CheckInputs on c2de0a7014853898bde9319cb347225d4ee6cef9025dc56773b0b57010060d48 failed with non-mandatory-script-verify-flag (Script evaluated ...
0
votes
1answer
6 views

When I specify wallet in bitcoin.conf for testnet3, it gets ignored

I have a question about specifying wallet for testnet3. My bitcoin.conf file is located in the root of the Bitcoin folder with the line 'wallet = receiving.dat as well as testnet=1. Whenever I run '...
-2
votes
0answers
5 views

How do I get inflation rate for crypto coins in csv format

I'm interested in doing econometric analysis of crypto coins and returns based on inflation rate. Any csv files that has all coins and inflation rate? Thanks.
0
votes
2answers
20 views

Upgrading Fees in Bitcoin Trading

I would like to know what "upgrading" fees are? The guy who's mining my account says I need to pay him $1005.50 more in Bitcoin before they can go on. I only invested $300.00. Does it sound correct?
1
vote
1answer
12 views

Who pays on-chain fees for settlement transaction?

Given a channel between Alice and Bob, who pays the on-chain fees when closing the channel? Considering all possible types of closes: Bob unilaterally closes channel Bob wants to close the channel ...
1
vote
1answer
14 views

Set lower limit to incoming new channels in LND

For now, any remote node can open a channel to my LND node and my node will always happily accept the channel. However, I've seen in the past that other nodes would have limits in what channel sizes ...
1
vote
0answers
25 views

Parse signature and public key from scriptsig in an input transaction of bitcoin protocol [duplicate]

I'm interested in bitcoin protocol and checking validation of a transaction. in a TX message, we can see one or more than one input transaction and every input transaction has a previous transaction ...
-1
votes
1answer
15 views

How to get latest 50 transactions for a BCH address?

Is there an API from where I can get latest received transactions for a bitcoin-cash address?
0
votes
1answer
4 views

RPCPORT and --rpcport not working in Latest version: 0.18.0

We are using bitcoin core RPC Endpoint to broadcast transaction over network, It was working perfectly till version 0.17.0 but in latest version 0.18.0 RPCPORT and --rpcport is not working. Please ...
0
votes
1answer
19 views

is it possible to encrypt the message with PUBLIC key and decrypt with SAME PUBLIC Key? [on hold]

In asymmetric cryptography, is it possible to decrypt the message with the SAME PUBLIC key with which the message was encrypted ? or message encrypted with public key can ONLY BE decypted with ...
0
votes
0answers
17 views

Extract input addresses from a tx message in bitcoin protocol

Recently, I wrote a c++ code to extract some information from some messages in BITCOIN protocol. for example, I extracted bitcoin value and output address corresponded to it from tx messages of this ...
0
votes
2answers
20 views

Please guide what should i do

Am new in bitcoin world and didn't started it yet... A man from USA saying to create blockchain wallet n top up then share ur email n wallet address not login not password to connect my wallet to a s9 ...
-1
votes
1answer
29 views

Need help with understanding this script file

Here is an image of txt file. I had asked someone to help get some bitcoin out and they sent me this code with a price tag of 12$ But I have no idea what its used for as they have not responded. Any ...
1
vote
1answer
20 views

How do I restore use of my wallet.dat file, last used in 2013?

I found a wallet.dat file in my backup folder, which I recall last using in 2013. I'm curious to see what the BTC contents are, which I recall being a really small fraction of BTC. In any case, is ...
1
vote
2answers
16 views

Background information on warning, when closing wallet in pruned mode

What are the implications and reasons behind this warning on gui popup, when closing the wallet: "bitcoin closing the wallet for too long can result in having to resync the entire chain if ...
0
votes
0answers
15 views

secp256k1.publicKeyCreate generating symbollic key

Following is my code: const bip39 = require("bip39"); var HDKey = require('hdkey'); var bip32 = require("bip32"); var bitcoin = require('bitcore-lib'); var EthereumBip44 = require('ethereum-bip44'); ...
0
votes
1answer
30 views

Is it really true that you get money when using CryptoTab browser?

I read a publication on Facebook stating that if we are watching youtube videos or opening social medias with the browser CryptoTab then we can get bitcoins : CryptoTab browser. Is it true ? Is not ...
2
votes
1answer
113 views

What does it mean if TXID and WTXID are the same?

I'm having a tough time understanding what exactly WTXID is and what it means when WTXID and TXID are the same (and vica versa). What I understand is that WTXID includes the witness data. Since non-...
0
votes
1answer
17 views

Bitcoin core does not produce a wallet at all

I'm reading tutorials on working with bitcoin core like this: http://bitcoindaily.org/bitcoin-guides/bitcoin-core-tutorial/ and http://bitcoindaily.org/bitcoin-guides/how-to-recover-bitcoins-bitcoin-...
2
votes
1answer
14 views

Why isn’t connecting to your own local node a common feature for Bitcoin clients?

I come from the Monero community and connecting to my own local node running on my home PC is very simple whether it’s on the GUI, CLI or a mobile wallet. Why does Bitcoin not have the ability to do ...
0
votes
0answers
33 views

How to get the block hash in the chainstate leveldb?

From this link What are the keys used in the blockchain levelDB (ie what are the key:value pairs)?, to get the block hash I use the obfuscation key and xor it with the result I get from the db. So I ...
2
votes
2answers
34 views

Buying 100 kilobitcoins

This is a hypothetical question. Assuming that the price of bitcoin is $8,250 (as of current writing) and I had 25 billion dollars at my disposal, what would happen to the price of bitcoin if I ...
0
votes
0answers
6 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 ...
0
votes
1answer
8 views

Is there a way to determine the difference between a BTC prefix 3 address and a LTC prefix 3 address?

I am trying to determine if there is a way to tell the difference between a BTC prefix 3 address and a LTC prefix 3 address, for validation purpose. Example if given this public key address: ...
1
vote
1answer
24 views

Lightning Network : Pay a Bolt11 Invoice in multiple Payments

Is there a way to pay one Bolt 11 Invoice in multiple payments with Lightning Network? For instance this invoice total amount to pay is 5000 satoshi: ...
-2
votes
0answers
20 views

How often do you use mobile application for trading by cryptocurrency? [on hold]

I am interested in topic like how often do you use mobile application to trade by cryptocurrency or it is much more convenient to trade via personal computer? What do you think, guys?
1
vote
2answers
33 views

What would be the consequence of a constant network difficulty?

Say the difficulty of the bitcoin network was not variable. Then regardless of the network hash-rate, the mining puzzle will be the same. What would that mean in terms of the security and economics of ...
0
votes
0answers
13 views

Access Kucoin OHLC data from API?

I need to access kucoin Open-high-low-close (OHLC) data from Kucoin API. Looking in https://docs.kucoin.com/#get-trade-histories, I deduced that to access OHLC data (for instance BTC versus USDT, ...
0
votes
2answers
34 views

BOLT #7: Can receiving node requirements in channel_update message give rise to malicious attacks?

Following requirements have been placed on the receiving nodes related to the channel_update message in BOLT #7. if timestamp is NOT greater than that of the last-received channel_update for ...
-1
votes
0answers
20 views

Is it safe to trade bitcoin on Binance now ? After the hack [on hold]

After binance exchange being the most secured one gets hacked.. can we still trust the exchange ? cause the information regarding the hack was too shady and not transparent
0
votes
1answer
10 views

Centos electrum public-key import

I have several bitcoin addresses (together with corresponding public keys) from Electrum wallet I've used previously. I moved to another CentOS server and now I need to import this addresses back. But ...
0
votes
0answers
11 views

No JSON object could be decoded; Failed to subscribe; IO errors - 1, tolerance 2

I´m using GUIminer and Bitcoincore. When I start to mining I got that message, how can I fixed it?
0
votes
0answers
19 views

Bitcoin script execution unsuccessful

I'm working my way through "Mastering Bitcoin". The author made a transaction: 0627052b6f28912f2703066a912ea577f2ce4da4caa5a5fbd8a57286c345c2f2 https://www.blockchain.com/btc/tx/...
0
votes
1answer
14 views

looking for faucet API so i could use it for tests - Automated faucet

i would like to make some tests on test net, the issue is every time i have insufficient fund in my wallet i need to find a faucet and manually add funds. i would like to create an automatic faucet ...
0
votes
1answer
19 views

What is the best Lightning implementation to obtain the network graph?

I want to obtain a fresh snapshot of the Lightning network from my own node. So far I've experimented with Eclair, its API calls allnodes, allchannels, and allupdates give me the information in the ...
1
vote
1answer
16 views

Lightning network: which update messages are replayed?

If I understand correctly, after a new node connects to a peer in the Lightning network, it receives all past channel announcement / update messages for currently open channels to recreate a local ...
0
votes
0answers
15 views

Import private key from coldstorage wallet.dat to hotwallet wallet.dat?

What is the recommended procedure to make coins from coldstorage accessible. Assume latest wallet.dat v18 and prv1/pub1 key pair (like shown in dumpwallet). Now i have a hotwallet and would like to ...
0
votes
0answers
11 views

Empty reply from server v0.18.0

From the wallet comes an empty response to my request. Logs 2019-06-12T06: 46: 15Z sending inv (37 bytes) peer = 11 2019-06-12T06: 46: 15Z received: addr (31 bytes) peer = 27 2019-06-12T06: 46: 15Z ...
0
votes
1answer
19 views

Where can I download a snapshot of the Lightning network topology?

I want to study the properties of the Lightning network graph. Is there a way to obtain a reasonably fresh snapshot containing nodes and channels (say, in JSON format)? There are multiple explorers ...
0
votes
1answer
22 views

Is a bitcoin UTXO divisible?

In this video Andreas Antonopolous says an output is indivisible and therefore if a transaction smaller than the output is done, the rest is used as change and returned to your different address of ...

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