All Questions

1
vote
1answer
25 views

Bitcoin Core Old Wallet.dat Vulnerability

Own a wallet.dat file from 2010-2011. Yesterday I saw there was a vulnerability which is makes attacking somewhat easier if your wallet is generated by old client and I'm pretty sure my wallet is ...
0
votes
0answers
7 views

How do I find my b64secret from GDAX API?

How did I find the b64secret that is automatically generated by GDAX API? I have a passphrase and API key that I got from GDAX, but I don't know what/where the b64secret is. The documentation says ...
0
votes
1answer
14 views

Can I monetize “crypto” using asset backed securities?

A friend of mine wants to create "tokens" signifying the completion of certain corporate milestones, e.g., the acquisition of X customers, and then "monetize" these "crypto" tokens as "asset backed ...
0
votes
1answer
14 views

Why is Target < Blockhash?

I am currently trying to validate a blocks hash against its target in python3: This is a block in the Blockcypher testnet, and I am using this formula from the Bitcoin Wiki. block_hash = '...
-2
votes
0answers
18 views

Generate Litecoin Address

I'm using bitcoinj to handle bitcoin. Now I want to generate litecoin address using bitcoinj library. Please help me who knows this answer. Thanks.
0
votes
2answers
13 views

How to determine how many transactions are being processed by the lightning network?

Is there a way to get an estimation of how many transactions are being currently (last hour or last 24h) processed by the lightning network? And by a specific node?
-2
votes
0answers
21 views

Is cryptonite plugin legit?

https://www.metacertprotocol.com/cryptonite Someone recommend installing this to protect crypto asset. Is this legit? What about if this plugin by itself is phishing? Is it save? Electrum ...
1
vote
0answers
25 views

Bitcoin Wallet generation and TX signing

I am developing a Bitcoin Wallet in Javascript. I've worked on ETH but it's my first time on BTC. Here are following queries if anyone can help: How do we generate bitcoin Wallet like we do in ...
0
votes
0answers
17 views

Is there is any one who can provide the logic to set the transaction fee for bitcoin transcation?

I am searching for the rpc function that will set the transaction fee . So far i am not able to find. how can we set the transactions fee for setting the transactions priority.
0
votes
0answers
13 views

Keep getting error in payment protocol when trying to purchase amazon card. [on hold]

Wants me to select currency on invoice page. I cannot find invoice page.
0
votes
0answers
14 views

Go connect bitcoin full node by rpc?

How should I pack the message? It can connect the full node by following command: curl --user rpc --data-binary '{"jsonrpc": "1.0", "id":"curltest", "method": "getinfo", "params": [] }' -H 'content-...
1
vote
1answer
30 views

Do pools distribute “jobs” to miners based on “failed” solutions which have already been submitted?

My question is this: How exactly does the stratum protocol distribute "work" to miners? More specifically, since mining can be compared (in many regards) to "brute forcing" a cryptographic hash (i.e. ...
0
votes
2answers
34 views

At which stage is a transaction validated?

Let's say Alice owns 12 BTC in her wallet, and she tries to send 5 BTC to Bob. First the transaction is broadcast to all nodes, then transaction is in the transaction pool. Then miners would choose ...
4
votes
3answers
330 views

Would it be possible to create a soft-fork for reducing miner reward?

Context: There is a bet going on r/bitcoin about the possibility of doing a user activated soft fork for reducing current miner reward to 0.25 BTC. One of the users says the bet had two points: the ...
0
votes
1answer
29 views

Can i use the same hardware mining for bitcoin and Zcash?

I use bitcoin hardware mining. Can I modify the hardware to mine Zcash cryptocurrency or I should buy Zcash mining hardware?
1
vote
1answer
23 views

Script - Is it possible to build an addresss that allows retrieve a certain amount per address?

Is it possible to define a multi signature address that allows spending only certain percentage to each signature? For example, three different people with different public-private keys build an pay ...
0
votes
0answers
6 views

Electrum LTC keeps synchronizing. Why?

In this question, I talked about electrum litecoin wallet keeps synchronizing. Electrum Litecoin keeps synchronizing. What should I do? Reinstalling a newer version works. While I already solved my ...
0
votes
1answer
12 views

Is this article wrong/scammy? Is it possible that miner earn more by mining several different coins at once through minergate?

https://ambcrypto.com/mining-in-the-bear-market-made-easy-fast-and-cheap-with-minergate/ This one claims they can mine more efficiently by mining several coins at once. I have a hard time believing ...
0
votes
1answer
49 views

Why are the inputs of Bitcoin transactions signed?

This is my understanding of what a transaction looks like: inputs: input0: txid: <funding tx0 TXID> outputID: <output ID of UTXO in the funding tx0> scriptSig: <...
1
vote
1answer
30 views

Txindex=1: how to recognise the blockchain with this option?

This might be a dumb question: I started the Bitcoin daemon for an initial blockchain download. It immediately started downloading, I edited the Bitcoin.conf file with txindex=1. Stopped and restarted ...
1
vote
2answers
55 views

Operation not valid with the current stack size

According to bip65 https://github.com/bitcoin/bips/blob/master/bip-0065.mediawiki I can use expressions like IF ... ELSE ... ENDIF Here is example script from this document: IF HASH160 <...
0
votes
2answers
56 views

How can Segwit increase transaction throughput if the same amount of data is stored in the blockchain?

I'm posting this after reading the answers to this: Where is the Signature stored in a SegWit transaction? I've found out from reading that, that in Segwit, the "witnesses" (or signatures) that ...
2
votes
2answers
77 views

What is the reasoning for Grin's high inflation rate?

According to an interview with Yeastplume on What Bitcoin Did, Grin is going to have a flat reward schedule of 60 grin per block at one minute blocks, i.e. about one grin per second. This translates ...
0
votes
2answers
84 views

Copay wallet no longer available on the Google Play store [on hold]

This URL where the Copay wallet used to be now just shows "We're sorry, the requested URL was not found on this server." Why was it removed? Was there a security issue? Is this going to affect the app ...
0
votes
1answer
49 views

How will the Bitcoin wallet compute address?

I came to know that Bitcoin wallet will caluculate address from public key but I want to know how it will caluculate. After caluculating how will it know that address is redundant free.
0
votes
2answers
26 views

bitcoin-cli JSON-serialized error output

Is there a way to make bitcoin-cli output JSON-serialized errors? For example if I do bitcoin-cli getblock foo the output is error code: -5 error message: Block not found I want the output to be ...
0
votes
2answers
31 views

Is blockchain the only technology for p2p decentralised global network?

Are there any p2p decentralised cross border network structure out there?
2
votes
0answers
18 views

NBitcoin get signature without signing

After creating a new NBitcoin transaction (with a single non-standard pay-to-script input and multiple outputs), is there any way to calculate the transaction signature and manually put it in the ...
0
votes
1answer
32 views

2 transaction in same address - Please help

Sent my btc address 3 days ago for a payment to one of my customer he didnt respond or paid . next day i provided the same address to my another customer for a payment which he sent. Now today i ...
4
votes
1answer
1k views

Why is increasing block size in the Bitcoin network considered to decrease security?

I have been doing some research on the Bitcoin Cash hard fork and the main contention of increasing the block size appears to be the possibility of less security on the network. How does an increased ...
0
votes
0answers
22 views

can i received my ether after my payment transaction is confirmed in the bockchain ledger? [on hold]

I checked in blockchain the wallet address that received my payment for .0238 ether and i saw the transaction already recorded.This wallet address has only 5 ether in his wallet and he has to send 20 ...
-1
votes
1answer
39 views

If you are building your own blockchain, how would you decide on the right consensus algorithm? [on hold]

Not limited to bitcoin. How does blockchain developers or businesses make the decision on which consensus algorithm to choose? What are the things to consider when deciding on the consensus ...
1
vote
0answers
53 views

How to integrate Tether USDT payment (Omni layer)?

I'm trying to integrate USDT payment method (Omni layer) in my application, like https://luckygames.io/. Can anyone please help me answer my questions: Is there any public node to work with Omni ...
2
votes
1answer
40 views

Error parsing JSON in bitcoin-cli signrawtransactionwithkey

I have issues trying to sign a 2/3 multisig tx with the first private key. What am I doing something wrong or am I missing something for the arg? Command format: /usr/bin/bitcoin-cli -testnet ...
1
vote
1answer
25 views

Initial Block Download Problem

I started a new Bitcoin Core(testnet) and the download of blocks worked perfectly till 15% and then i don't know what happened, but i got the following error: unknown new rules activated (versionbit 1)...
0
votes
0answers
23 views

What are the basic differences between BTC ,LTC and BTG?

What are the basic differences between BTC ,LTC and BTG? What are the advantages and disadvantages of these basic differences? Do these disadvantages (advantages ) weaken (strengthen ) the basic ...
1
vote
1answer
27 views

Lightning Onion Routing vs TOR

From what I can gather BOLT #4 is applying similar methods, such as obscuring previous and future hops from intermediate nodes, to the TOR network for routing payments across the Lightning network. ...
1
vote
1answer
34 views

Why this transaction is invalid?

I issued this transaction on testnet (for a homework later solved with another script). python-bitcoinlib validates the transaction but when i submit it to blockcypher it gets rejected with error: {"...
0
votes
0answers
10 views

Changes to the liquid blockchain

Would changes to liquid (e.g. bulletproof) be implemented by a hardfork (2/3+ just sign off on the change?) Or some soft-fork with compatibility? Also how large & often are liquid blocks?
1
vote
1answer
24 views

how does a miner choose which transactions go into the next block?

how does a miner choose which transactions go into the next block? do all transactions go through or is there a lottery process? I understand transactions with higher fees are given priority.
0
votes
1answer
17 views

Multi-sig signature computation

I don't understand, how multi-sig signatures are generated. I've seen that inputs redeeming a multi-sig output, can be signed and signed over repeatedly, with different private keys using bitcoind's ...
0
votes
0answers
16 views

Is it possible to assemble the raw block from block explorer data?

I'm wondering if by downloading txs and blocks from, say, https://blockchair.com I could potentially assemble a full raw block. Does anyone know that? Its purely for entertainment and explanation ...
0
votes
1answer
13 views

Can transaction be stuck in the 'processing' stage and has not been mined by the Blockchain network? [duplicate]

Can transaction be stuck in the 'processing' stage and has not been mined by the Blockchain network and due to this, it cannot reflect in wallet ? My friend send me a bit coin but it did not reach me,...
2
votes
1answer
24 views

Do confidential transactions produce an UTXO

There must be magical cryptographic reason why CT doesn't create an UTXO. If it did make an UTXO, it'd be trivial to calculate the input + output right?
1
vote
1answer
31 views

Setup bitcoin-seeder

I wanna setup a dnsseed for a crypto currency using sipa/bitcoin-seeder on my VPS. The server is hosted at NetCup and running the software as root, and also listening on port :53 UDP. My domain is ...
1
vote
1answer
24 views

Which Bitcoin RPC call is used for setting transaction priority?

Is there is any bitcoin RPC call for setting the transactions priority ?
-1
votes
0answers
35 views

Copay wallet app. delisted at play store?

Copay wallet app. delisted at play store? I have a copay wallet. Is this going to aeffect my app whic is in my cell phone.
0
votes
2answers
29 views

In theory could a pubkeyhash script be solved without the public key in the scriptSig?

When signing a pubkeyhash UTXO, it is required to provide both a signature and a public key. The public key is duplicated and one copy is provided to op_checksigverify to ensure the signature is valid,...
0
votes
0answers
21 views

When was segwit released? I need to know the year that transactions hashes started switching over to segwit from legacy [duplicate]

I am just wondering when transaction hashes were able to be segwit rather than legacy. Thanks I need to know the year preferably.
1
vote
1answer
51 views

creating a hash that starts wtih 9 zeros

I am working on a school problem and want to generate a hash starting with 9 zeros, it is assumed to be the first block with only your name and the previous hash is 64 zeros. Can anybody help me or ...

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