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20 views

Bitcoin compilation error: conflicting declaration

I'm trying to compile the Bitcoin source (1) on Ubuntu and I get: In file included from bench/data.cpp:10:0: ./bench/data/block413567.raw.h:1:40: error: conflicting declaration ‘const unsigned char ...
1
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1answer
26 views

how to get bitcoin off an exchange?

As a corollary to asking how to transfer from cold storage, how is bitcoin first put into a paper, or other wallet, when it originates on an exchange? My primary concern is more getting the coins out ...
0
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1answer
29 views

Including transactions in a block - rules and time / technical aspect

I’ve a question regarding block and transactions included in the next block that is solved. Let us assume theoretically that there is newly propagated solved block. And now there are: tx0 and tx1 –...
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1answer
41 views

BTC deposit old address exchange [closed]

i had BTC deposit to old address in coinsbit.io exchange after 20 days they told me we dont have access to old addresses to bring back your money and i know the only one can have this access is ...
1
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1answer
43 views

How to anonymously and privately purchase bitcoin through tor?

How can Bitcoin be anonymously purchased through tor in a secure and private fashion? My question is related to: How can I setup Bitcoin to be anonymous with Tor? Personal information and bitcoin ...
1
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1answer
29 views

Would proxying a lightning hot-wallet with a lightning cold-wallet make the hot-wallet safer?

(Edit: I realize how Mt.Gox-y the below setup sounds, but I'm coming at it from a "lightning routing problem perspective", not necessarily a straight "bitcoin security perspective"...though...those ...
2
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0answers
16 views

What heirarchical deterministic derivation path is used for FIDO authentication on a Ledger Nano S?

What heirarchical deterministic derivation path is used for FIDO authentication on a Ledger Nano S? Does it ask for a different key each time or is it always the same key? If I connect to Google for ...
1
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0answers
20 views

Does Electrum reveal a wallets public key to Electrum Servers?

When Electrum Bitcoin wallet queries a random Electrum Server does it send the public key to the server or does it send a batch of addresses to check? For instance, after setting up Electrum Personal ...
0
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1answer
34 views

How does Bitcoin currently mitigate Sybil and Eclipse attacks?

What countermeasures does Bitcoin currently have in place to limit Sybil attacks (ie of full nodes [not miners]) and eclipse attacks? In particular, it seems like an important countermeasure would ...
1
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0answers
27 views

Bitcoin, BTC.com and monitoring double-spend attempts

I'm reading Analysis of hashrate-based double-spending article. On page 10 there's a table listing probability of successful double-spend attack in relation to required number of confirmation. ...
1
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1answer
71 views

Wallet management now that accounts are deprecated?

I'm building a website which will allow every user to make deposits and transact with Bitcoin, how will I be able to get the balance of a specific wallet. I currently know these commands: $bitcoin-&...
1
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0answers
14 views

How to use Bitcoin Testnet2 [duplicate]

I am looking to mine bitcoins with ease. But, first, I want to know how can I access an earlier testnet (testnet2). I have future plans to do this. I need to know how to open it up on the command line ...
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0answers
19 views

Missing Bitcoin in Bitcoin Core-Qt after -Zapwallettxes [duplicate]

I had posted a similar question, but wanted to remake as I figured out some things that are not the issue. I used the -zapwallettxes command to allow me to resend a transaction with a higher fee. ...
0
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1answer
41 views

Consider using Bitcoin but just heard the IRS is sending tax notices to 10k plus users

article: https://www.cnn.com/2019/07/26/tech/irs-cryptocurrency-taxes/index.html My background: Good understanding of RSA cryptography, some elliptic curve, Number Theory and I am a (real)programmer ...
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0answers
27 views

Can I use an earlier version of testnet?

I am looking to mine bitcoins with ease. But, first, I want to know how can I access an earlier testnet (testnet2). I have future plans to do this. I need to know how to open it up on the command line ...
0
votes
1answer
53 views

Javascript library or code that can convert an “uncompressed” bitcoin private key to a compressed one

I forked a pretty old brain wallet generator: https://dvdbng.github.io/memwallet/ -- Currently it generates uncompressed bitcoin private keys. Is there a javascript library that can convert an ...
1
vote
1answer
32 views

How can I start bitcoind without blockchain synchronization?

Suppose I make a locked wallet with 50000 pre-generated addresses. As long as I researched, only way I can collect those 50000 addresses using RPC and "getnewaddress". Feel free to correct me. I ...
1
vote
1answer
38 views

Create a 2-of-3 multisig raw transaction

I would like to create a Bitcoin transaction with a single input and a single 2-of-3 multisig output that pays 1 BTC to any 2 of the following 3 keys: ...
2
votes
1answer
28 views

How can I fund my node in regtest?

I am fairly new to bitcoin and was attempting to setup a local test network in my machine. I am using the regtest network to create the local network. Is there a way in which I can initialize the ...
5
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2answers
200 views

Is there a difference between bytes and virtual bytes (vbytes)?

In an Optech newsletter, size is referred to using vbytes. Is there a difference between vbytes and bytes? If so, what is the difference?
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2answers
49 views

Mining Probability

Assuming two miners have a (1/x) chance of finding a block over some time period, is the probability of both miners finding a block within that period simply (1/x^2)? More generally, would n miners ...
0
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0answers
33 views

Mycelium not reading segwit bech32 (bc1) addresses from a private key

I'm trying to import my bitcoin private key into the Mycelium android wallet, but it keeps showing up as the legacy address that starts with 1xxx. I sent some coins to the bc1 address and I verified ...
0
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0answers
12 views

how to convert protobuf wallet format into private keys

firstly, i did this step "enc -d -aes-256-cbc -a -in bitcoin-wallet-backup > bitcoin_decrypted" in openssl and entered the password it gave me org.bitcoin.production so i guess my password worked and ...
0
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1answer
31 views

Which BIP describes the structure and algorithm for creating a wallet file?

My app is able to create a public and private key from BIP39. The uncompressed private key is concatenated with a sha256 (private key) and then encrypted via AES and saved to a file. To decrypt, you ...
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0answers
24 views

recovering android wallet using opensll

i am very frustrated, i managed to decrypt the backup file by doing the opensll command and as expected after putting the password i do see org.bitcoin.production which means i am at the right path ...
0
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1answer
34 views

Post Bitcoin mine reward: Lowering Difficulty an Option?

Maybe my understanding of blockchain, and Bitcoin need to be refined and will allow help me understand why my question wouldn't make sense in the grand scheme. But first Ill establish my core ...
0
votes
1answer
55 views

Who is a first miner that receive a transaction from end-user?

This is a First Question. As you already know, the blockchain like Bitcoin, Ethereum is a software program based on peer to peer network system. so I am wondering that who is a first miner that ...
1
vote
1answer
28 views

Running bitcoin node with already verified blockchain

I'm following this guide https://stadicus.github.io/RaspiBolt/ to setup a bitcoin full node on my new raspberry pi. I already downloaded and verified the blockchain on my host machine. I also pruned ...
1
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1answer
38 views

Hardened address generation with BIP44 watch-only wallet with xpub

I am puzzled by the hardened key derivation from a watch-only BIP44 wallet. Let me first explain what I am trying to do. I am implementing a 2-of-3 multisig scheme I am using Bcoin node and wallet ...
0
votes
1answer
56 views

Creating a nothing-up-my-sleeve public key

I am trying to create a public key whose x starts with "34" and is followed by the minimum number n such that the concatenation of "34" and n is the x of a valid point (x, y) on the elliptic curve ...
0
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1answer
49 views

Could not connect to Bitcoin RPC server outside local host using bitcoind-0.18.0

I upgrade bitcoin core from 0.16.3 to 0.18.0, But I can not connect to RPC server outside local host. I use the following parameters as bitcoin.conf: testnet=1 server=1 daemon=1 rpcallowip=0.0.0.0/0 ...
0
votes
2answers
58 views

Installation of Bitcoin Core 0.18.0 on Ubuntu 18.04.2 error

I used "sudo snap install bitcoin-core" and it appeared to install fine except I get the error: "Failed to launch 'Bitcoin Core' Desktop file didn't specify Exec Field." Did I do something wrong? ...
0
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1answer
102 views

I had someone offer to mine bitcoin for me, I am a beginner

I had someone offer to mine bitcoin for me. I pay for the bitcoin on cash app and he mines it for me. With messaging him I started to feel like he didn't really know what he was talking about when ...
3
votes
1answer
76 views

What are the potential security issues when running a Lightning Node on my home network?

If I was to run a lightning node on my home network (and for example, not running the node through TOR), what should I worry about? Furthermore, what OS, settings and software should I use to ...
-1
votes
0answers
51 views

Profits in non-spendable wallet address [duplicate]

I received my profits in non-spendable wallet address and not they say I must pay 10% of what I have in non-spendable wallet address to make the funds spendable, is this true?
1
vote
1answer
56 views

Bitcoin 0.18: how to send bitcoin from one address to another using Bitcoind?

To transfer bitcoin from one account to another address, we have used sendfrom method and which got deprecated in the latest version Bitcoin 0.18.0 Bitcoin sendfrom method On reading the document of ...
0
votes
1answer
20 views

Using importmulti to import a single address to keypool does not work

I create a wallet with private keys disabled. Then use importmulti like so: command curl --data-binary '{"jsonrpc": "1.0", "id":"curltest", "method": "importmulti", "params":[[{ "scriptPubKey": { "...
0
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0answers
32 views

Missing btc after -zapwallettxes and blockchain rescan

I sent a transaction in Bitcoin Core and realized that the fee was too low. I waited a few days to see if it would confirm and then wanted to try something else. I read that starting bitcoin core with ...
0
votes
0answers
18 views

Signing multisig raw transaction is returning error “JSON value is not a string as expected”

I am trying to sign a multisig unsigned raw transaction but keep getting "JSON value is not a string as expected", I am stumped and have tried many variations. Can anyone point out what I am doing ...
0
votes
1answer
26 views

Issue with sendrawtransaction missing inputs error code -25

Working with Bitcoin-qt 0.16.3 testnet Attempting to sendrawtransaction, however, receive following error: Missing inputs (code -25) From what I have read, this results from attempting to use ...
0
votes
1answer
24 views

How to build a p2sh who's scriptsig contains a Signature

I have created a P2SH address, funded it, and am attempting to move the funds with a TX. The redeemScript for the TX requires the TX signature (OP_CHECKSIGVERIFY), but in order to create this ...
1
vote
1answer
33 views

Timer-based consensus algorithm in blockchain

Assume that there is an algorithm that ensures: 1- That a full node chooses an honest random wait time. 2- That the same node has waited the specified amount of time before proceeding to mine a block. ...
0
votes
1answer
33 views

Importing private key to bitcoin node is slow. Can it be faster?

I have launched the bitcoin node and synchronized it. The issue is that importing the private key forces the node to scan the blockchain for the operations with the key. Is there a way to import the ...
0
votes
1answer
28 views

Does bitcoin qt need to synch before I can spend my change?

Sorry for the follow up question... i was trying to transfer my btc to a new wallet (believing the original one had been compromised). I sent 2 tiny test transfers of $1 then when they arrived in the ...
1
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0answers
25 views

Bitcoin Core Blockchain Sync Fatal Internal Error - Corrupt Block - Linux

I'm trying to perform the IBD on Bitcoin Core 0.18 and I continually receive "Fatal Internal Error" at seemingly random intervals, closing bitcoin-qt and preventing me from fully syncing. Farthest I'...
1
vote
1answer
18 views

How is the PRIVATE KEY actually created in the first place?

How is the "Private Key" created in the first place? I understand that once you have your wallet, you will also gain access to your public key and private key... But in order to have a wallet ...
0
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0answers
24 views

Was my transfer hijacked? [duplicate]

I had to take my computer into the shop for a new hard drive a week ago. Worried that my bitcoin wallet (Bitcoin qt) may have been compromised, i setup a new Electrum wallet and one on my iphone. I ...
-1
votes
0answers
41 views

Trouble connecting to my lightning network node at port 9735

I'm on Windows 10. I'm already successfully running a full Litecoin node. Disabling Windows firewall has no effect on this issue. I am using litecoind-0.17.1 and lnd-0.7.0-beta. There's 2 things I ...
1
vote
1answer
34 views

How can I set up a simple single page store that accepts Bitcoin payments? [closed]

I am looking to set up a simple single page store. This store should respect the privacy of users by not requiring personal information where none is needed. I want to retain control of the funds, I ...
0
votes
1answer
33 views

How public-key cryptography secures bitcoin transactions from 51% attacks and Mining Attacks

I wanted to better understand how public-key cryptography avoids 51% attacks and mining attacks, also if this question is wrong please correct so that i can improve my research and provide me with ...

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