All Questions

0
votes
0answers
3 views

How can I generate keypairs, and check the public key against a known public key to check for a match?

Running on headless Ubuntu Linux. I would like to use this keypair generator, and check the public keys generated with each run against a single other public key. I know that "recovering" a lost ...
0
votes
1answer
486 views

Get the transferred Bitcoins back

I had called customer support of Coinbase and the call was navigated to this XYZ person. He asked me to confirm my details and from his side he confirmed few recent transactions as well. He then asked ...
1
vote
2answers
1k views

How do I get my bitcoins back if they got sent to an incorrect address?

I loaded my localbitcoin wallet with a total of $100 - I did 2 separate transactions. The first time I added $50, I tried to send half of it to cardrockcafe but it never showed up, so I tried to add ...
-2
votes
1answer
20 views

How many wallets don't support address reuse? (for refunds)

I have implemented an automated bitcoin refund function that sends funds back to the address that was used to sign the incoming transaction. How many wallets fail to support address reuse/refunds? ...
0
votes
2answers
62 views

I was tasked with installing a bitcoin core on ubuntu and I had questions

I was given the task to install Bitcoin core, to receive payments in the service. I have found some tutorials, but they were not used because they are GUIs. I want to use a bitcoin from the command ...
0
votes
1answer
36 views

ScriptCode field in P2SH-P2WPKH BIP-143 Test Vector

I'm trying to understand the meaning of scriptCode in the context of spending a P2SH(P2WPKH) UTXO. I've already read the following answer to a similar question, but it does not fully address my ...
0
votes
1answer
9 views

Security of ChaChaPoly (IETF rfc7539) in the noise protocol framework of the Lightning Network

According to this paper ChaChaPoly is secure against chosen known plaintext attacks. I wonder however if that security assumption is weakened by a lot since messages sent on the transport layer of the ...
0
votes
1answer
39 views

Transaction created, but txid not found on blockchain explorers

Transaction created as same others, but status - 0/unconfirmed And txid nod found in block explorers Transaction ID: e9c858f852a1de7c70e6f8377f2147f3def1d4b1d85a5947d028bb9c13450318 How to succefuly ...
0
votes
1answer
13 views

How to spend a multisignature, CLTV time-locked UTXO?

I am using this locking script with libbitcoin explorer to create a bitcoin testnet transaction: bx script-to-address -v 196 "[efa716] checklocktimeverify drop 2 [...
2
votes
1answer
28 views

LND errors after upgraded to v0.5.2

Recently upgraded to the latest lnd version (following the stadicus guide) but once i restarted the client i keep getting this error when i check the logs: [ERR] LNWL: Failed to process consensus ...
-2
votes
0answers
12 views

How to implement cryptocurrency trading? [on hold]

we have a new project to create a cryptocurrency trading. the API's i see for this are coinbase, bithump, binance and others. then you need to register to have an API keys and other keys need for the ...
0
votes
0answers
6 views

Research Data: All cryptos and consolidated historical prices (daily) [on hold]

I am looking for a source, that reliably collects all the data on all the cryptocurrencies and consolidates that. Preferably in OHLCV-format, vis-a-vis the USD or BTC and not deleting any "dead" CCs (...
0
votes
3answers
835 views

Bitcoin Cash API similar to BlockCypher

Is there any Bitcoin Cash API that has similar features as BlockCypher? Important is the ability to create new addresses and create transactions.
0
votes
0answers
10 views

Can I safely delete database.bak from wallet folder?

In order to save space. I cleaned it up and now my bitcind in freezing, but this might not be the cause.
0
votes
1answer
13 views

Low Hash Rate Results in No Payment [on hold]

Thank you for taking time to read this.I'm currently having problem with my mining project.I'm rather new to mining and I'm not mining for economical reasons but actually I like to keep my PC busy and ...
0
votes
0answers
16 views

api limit workaround

Are there any ways to avoid limitation for api calls (5/sec)? I need the info about transactions and balance (of certain account), UTXOs and the ability to broadcast my transaction. Currently I am ...
1
vote
1answer
18 views

lightning-cli listnodes is empty. Am I missing something?

I want the result of listnodes like the following. How can I do that? { "nodes" : [ { "nodeid" : "028e5a8e86540f703e1f58880d35d1e318a54c27d84ec1edbcde04a78ed4469a1e", "alias" : "???? ...
0
votes
1answer
18 views

What is local Bitcoin?

I was listening to the Pompliano podcast and there was this really awesome guy talking about how he has been able to use local Bitcoin to stay afloat in amidst a collapsing economy and society in his ...
0
votes
2answers
37 views

The order of the generator point G used in bitcoin

Hi I was just wondering how the order of the generator point G used in bitcoin was actually calculated. From the specification listed http://www.secg.org/SEC2-Ver-1.0.pdf for secp256k1 I can see ...
0
votes
2answers
85 views

What is the source of initial transactions of bitcoin?

Sorry, if I am wrong or silly! It is understood that: a) Satoshi Nakamoto sent the first transaction to developer Hal Finney on January 12, 2009, the genesis block contains 1,073 transactions and he ...
0
votes
1answer
25 views

What happens when invoices get paid more than once?

Until today I thought, that lightning invoices can only be paid once. Where do the funds go when an invoice is paid more than once? Will every payment reach the destination node or can reusage be ...
1
vote
1answer
199 views

Liquidity Solution for Crypo Exchanges

I need to connect to a network of global crypto-exchanges and shares their order books (DSO Liquidity Solution) so ensures that right from the very start my client exchange software will have a full ...
1
vote
5answers
553 views

Single API Platform for multiple cryptocurrency?

I am wondering for a single API platform where i will be able to trade for below 5 crypto currency : 1) Bitcoin 2) Litecoin 3) Ethereum 4) Dash 5) Monero So, are you guys supporting all these in 1 ...
0
votes
3answers
480 views

C#, How can I actively query the crypto-market?

Are there any wrappers to get the real-time crypto-currency value similar to coincap.io? Right now I am using Json to deserialize a download string from CoinMarketCap, however, the api does not ...
0
votes
1answer
44 views

Where to get api to fetch list of all crypto exchange and their available pairs

I have searched too much but I didn't find any php or js api to fetch list of all crypto exchange with available pairs. Please help me.
2
votes
1answer
18 views

PSBT (BIP-174, Partially Signed Bitcoin Transaction) Ordering of keys

When serializing a PSBT (BIP-174, Partially Signed Bitcoin Transaction), I cannot find any information if the keys should be ordered when serializing the PSBT? Under the "Test Vectors" section for ...
0
votes
1answer
14 views

Why do LedgerJS and Electrum, using the same Nano S and derivation path, not refer to the same Wallet?

I start Electrum in my cmdline like this: ./Electrum --testnet I connect Ledger Nano S to my laptop. In Electrum I make a new HD Wallet with Derivation path using the Nano S's private key as seed: "...
-1
votes
1answer
62 views

can I recover the change of a TX?

I was reading and I have a question, if you please can help me. I send 0.00335 BTC in this TX: bf3eedc1929042444e62badaf885a8dd49333c31ff40d023175a90da241ec2e0 and I see the 0.00335 as spent, but the ...
10
votes
1answer
2k views

Bitcoin automatically diverted to bech32 address

I sent bitcoin to an address starting 3Cn using Electrum but the blockchain viewers seem to show that it has gone to an address beginning bc1 as shown in the link below. Transaction Viewer How can ...
0
votes
2answers
23 views

Recovering a wallet from a lost device onto newly bought device

Please, in case my device get lost, broken, or abundoned, what can I do to recover my lost wallet address with my bitcoins onto my new device?
0
votes
2answers
22 views

Transactions with multiple input UTXOs and multiple output UTXOs

Suppose a transaction t has 5 input UTXOs each worth 1 BTC, each unlocked by a different sending address Ai. The outputs of that transaction are 10 UTXOs of 0.5BTC each, each locked by a different ...
0
votes
0answers
27 views

Is there any hope to recover my wallet? [on hold]

I tried to login to my Bitcoin wallet. I use the one at blockchain.com. I received the authorization email but it wouldn’t let me in after authorizing. There is the trouble logging in page. I was ...
0
votes
2answers
26 views

If transactions are changed in memory how miners know it?

If Alice requests something to bob, then Alice sends her public key and Bob encrypts message by using Alice's key. Bob uses his private key and hash function to make a signature. After finishing this ...
0
votes
1answer
50 views

where is bitcoins?

I have bitcoin core wallet 17.1 I sent 85$ to 32yF1MuqbUmKsGZE7jedkZV8PVJRuimRAu to one of my wallets but all my wallets shows 0 balance, why? https://www.blockchain.com/btc/address/...
8
votes
2answers
32k views

How untraceable is Bitcoin?

Are Bitcoins truly untraceable? For example: I want to buy Bitcoins with a Credit Card (e.g. through VirWoX) then I transfer them to a bitcoins address. After that I send them to some service like ...
0
votes
0answers
29 views

How to make a bitcoin block explorer? [on hold]

I need to create an block explorer for bitcoin. what is the most reliable way to create it.
5
votes
4answers
3k views

Ripple testnet explorer

This is Ripple main Explorer. But where can i find the transactions ledger from wallets on Ripple testnet.
1
vote
1answer
23 views

What are the consequences if I spoof an IP address in the node_announcment message?

According to BOLT 07 the node accountment message looks like this: type: 257 (node_announcement) data: [64:signature] [2:flen] [flen:features] [4:timestamp] [33:node_id] [3:...
1
vote
2answers
52 views

How to figure out the coordinates of a compressed G point?

I really can't get my head around this ECDSA thing... So far I know that it's used for validating transactions by having a private key sign its signature to the transaction. I've come to the math part ...
3
votes
4answers
814 views

What's the difference between 12 word seed and 24 word seed?

Why was the format switched to 24 words for some newer wallets?
0
votes
1answer
21 views

have 12 word phrase need to find wallet

I have my 12 word passphrase and would like to see the contents of my wallet how do I see this wallet on a new app or site?
1
vote
3answers
657 views

What is the reasoning behind the choice of 2^256-2^32-977 for the prime on the secp256k1 curve?

In Bitcoin's elliptic curve (secp256k1), the prime p = 2^256 - 2^32 - 2^9 -2^8 - 2^7 - 2^6 - 2^4 - 1 the generator point Gx = 0x79be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798 ...
0
votes
0answers
31 views

OP_CHECKDATASIGVERIFY not working

I'm trying to generate a signature and pass it through OP_CHECKDATASIGVERIFY as part of a P2SH address on a regtest network. This results in the following: Public Key: ...
0
votes
2answers
38 views

Is it possible to generate(mine) a block with specific transaction via bitcoin-cli on regtest?

I want to generate a block with specific transaction via bitcoin-cli on regtest. The "generate" command does not have the option. It collects transactions in mempool by the default rule. I guess I ...
0
votes
1answer
14 views

remote channel message: Unreasonable to_self_delay = 2016 (max=2000)

so tried to open a node whose owner opened the port but I get this message above: remote channel message: Unreasonable to_self_delay = 2016 (max=2000). I tried on both elcair wallet and bitcoin ...
0
votes
2answers
479 views

I have my public key and my recovery passphrase. How do I get my private key to that address

Hi I have my public address and my recovery phrase how do I create my private key for the public Bitcoin address.
0
votes
0answers
17 views

How to use bitcoin-core wallet from terminal? [on hold]

I've just installed bincoin-core (bitcoind + bitcoin-cli) on ubuntu 16.04, synchronized blockchain with testnet. But I coundn't find how to manage with my wallet from terminal
0
votes
3answers
781 views

Can sendtoaddress use account other than “”?

sendtoaddress is using the "" account by default. Is it possible to make it use any other account name?
3
votes
1answer
72 views

How would the gossip protocol announce channels from a channel factory?

I was just listening to SLP59 with Christian Decker. They mainly discussed channel factories. While the construction of multiparty channels and higher order systems (sub channels) being derived from ...
0
votes
2answers
13 views

Calculating height of block

How do I calculate a possible height at which a block should be mined some time between 2 given times (say 8:00 am - 10:00 am)?

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