Questions tagged [blockchain.info]

This tag should be used for questions regarding the service 'blockchain.info'. Blockchain Ltd. is a company that offers a web wallet and provides a blockchain explorer under the domain blockchain.info.

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16 views

How nodes solve cryptographic hash by random guesses in bitcoin network

I searched for a lot. Previous answers on the bitcoin stack exchange did not answer my question. Well, According to my research, Any node can collect a set up unconfirmed transactions into a block and ...
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1answer
13 views

How bitcoin network appends new block in its Block-chain

Well, According to my research, After solving the cryptographic hash, when the multiple nodes broadcast the block at the same time as a suggestion to be the next block in the chain. Bitcoin network ...
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1answer
50 views

Blockchain.com wallet was compromised and btc stelon

I lost some money in a ico scam and googled and found a reclainfund ltd to recover fund. They ask me to set up a blockchain.com account and then share account wallet id and password so they can ...
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32 views

Why does an X show in search bar when I paste a Bitcoin address in Blockchain? [duplicate]

I sent some Bitcoin twice to an address (3QiGE6rfL5PiCN8werdtXTsqeG6drN4oVm) and yet they say never received the funds. Also why does an X show up in search bar in Blockchain.com when I paste the ...
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34 views

Unseen BTC transaction in a blockchain Wallet

if a BTC transaction is made in to a blockchain wallet address and it is not seen in it activities but appears in the blockchain explorer that the transaction has been made What will I do ...
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1answer
32 views

how does node validate scriptSig

Let's say I sent some BTC to Bob, so I created a transaction (forget about scriptPubKey) since let's say I was able to prove it by executing scriptPubKey. so After I sent BTC to BOB, new transaction's ...
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38 views

anyone can help me recovering my bitcoin bip38 password? [duplicate]

i have bitcoin wallet with more than 1 btc but i cant import it without losing this amount cos i forgot the bip38 password public key: 1CZosSHnf87ZqZ3fRiAuikpzdCZhAKsi3y private key: ...
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1answer
47 views

how to make own coin with soft fork? [closed]

What I am looking to do is soft fork on litecoin and create my own coin! I know that I need to make a node but I can't find any process that shows me how to create my own coin.
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1answer
136 views

“Needed Turnover” / “Missing Turnover” - How to get my money out?

Contact Information: contact@securitycrypto.info General information support: info@securitycrypto.info Support and online transaction search with full and detailed information: support@securitycrypto....
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1answer
64 views

fund stolen from my blockchain wallet

I am Ashish jaiswal from India. I logged in to my blockchain wallet today and i received the approval email from blockchain. I approved the email and in next minute I see 8.43 btc has been taken out ...
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1answer
97 views

What is the request limit number in the blockchain.info API? [closed]

I'm planning to use https://www.blockchain.com/api, precisely single block https://www.blockchain.com/api/blockchain_api for testing purposes on my script. I noticed there this line on the the API ...
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20 views

Finding legitimate sources of research and info regarding crypto, mining and the blockchain [duplicate]

I'm relatively new to Bitcoin, crypto and the blockchain and mining etc, however due to having over 15 years experience in IT Ive followed BTC etc since it kicked off in (2009?), and would like to ...
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1answer
28 views

How to actually handle the xPub gap limit when receiving Bitcoin deposits?

I've read the other questions involving this, including How to solve Blockchain 20 address gap-limit problem? and Blockchain gap limit which don't actually remedy the issue in a practical sense, only ...
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1answer
245 views

I need to make large number of queries to different addresses every few minutes for my bitcoin application. What service?

I have an application that needs to makes queries to get account balances and transaction data from Bitcoin and other cryptocurrencies. Many of the free ones have a rate limit. I'm willing to pay for ...
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1answer
59 views

How to get access URL to get JSON output from BTC RPC Explorer [closed]

Currently I'm using blockchain.info to get the balance of an address like this: https://blockchain.info/de/q/addressbalance/1Mj94YLoFudaD4MvfxoUx7nAur5kTeRVFR It outputs the bitcoin balance. Due to ...
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2answers
39 views

Blockchain.info “Too Many Requests” - Alternative solutions that can be hosted by myself

I'm trying to build out a Bitcoin service that requires me to query address balances and other data. So far I've been just using blockchain.info to do these request, but lately i'm hitting the too ...
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1answer
99 views

What does this variable R mean

What does this variable R mean if it is the same in transaction signatures, and can I find S Z from the transaction I want an explanation or someone helps me to find the variables type address: ...
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2answers
54 views

How Bitcoin nodes validate a new wallet

I have a cuple of questions about how wallet creation works. If I create a Bitcoin wallet offline, is there any way of like validate the new wallet, I mean, what if this wallet already exist? I know ...
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1answer
214 views

i find r s z from tow transaction but the r value is not same

i need your help plase i find r s z from tow transaction but the r value is not same from this wallet 1XCPdWb6kk7PGfvbdRbRuNh51aPc4vqC7 this is information tx 1 ...
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0answers
53 views

how i can find private key from Y X Z [duplicate]

How can I find the private key with X and Y and Z in the transaction i have this ('THE R VALUE is :', '0cf435db180216f3aaa5c2cb8231cbccf2f6824fc0051396b45e4ab01bb0f5e3') ('THE S VALUE is :', '...
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1answer
54 views

MISSING FUNDS ON BLOCKCHAIN [closed]

Please help me out. i have never shared my wallet ID or password with anyone. i only loss access to my blockchain account because i misplaced my phone and i had to reset my 2FA. It has been approved ...
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0answers
30 views

Parsing transaction hash from rawblock data

I got block raw data next url https://blockchain.info/rawblock/00000000000000000002447735c7723ee9188322c0938e6587866a4458b9135f?format=hex Can I find transaction hash in url used python?
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1answer
47 views

How can I download a single Bitcoin block?

I just started studying bitcoin. I would like to be able to download a single block from the Bitcoin network. I referred to the following: https://blockchain.info/rawblock/...
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0answers
27 views

Is there an API to create transactions in the Bitcoin blockchain with only a private key?

Is there an API to create transactions in the Bitcoin blockchain with only a private key? I am new to working with the Bitcoin and using its API. So, I have searched the API documentation. And here is ...
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1answer
68 views

Import bitcoin address only with public key [closed]

I want to import a none spendable paper wallet. This was possible in the past. But now I am only allowed to import an adress with the private key. So this address won´t be none spendable. Was there an ...
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1answer
143 views

Financial Department Bitcoin

I wanted to send bitcoins to my wallet from my trading account and did not receive anything. A short time later I got from Fiancial Department Bitcoin received the following message: Your payment of ...
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1answer
56 views

What can I do with “unspent” transactions? Can I transmit them to a chain?

I withdrew some bitcoin from a service's account I maintain. The transaction shows up in my wallet, but it has been marked as "unspent" ever since. What does this mean?
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0answers
30 views

Authentication error with Blockchain Wallet API [closed]

I successfully integrated the blockchain-wallet-api into an application which is currently on production. The challenge I'm having is that even though I was able to disable email login authentication ...
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1answer
233 views

Check wallet address balance programmatically in PHP using Blockchain wallet api

I'm tyring to fetch my wallet balance programmatically using the Blockchain wallet api. Currently I was expecting that a simple api call to https:/blockchain.info/merchant/$my_guid/balance?password=$...
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2answers
470 views

blockchain says Not enough funds

i have 30-40 $ in my account now i have pay for something but when i add 20$ amount i say Not enough funds. and when i click on maximum it fill the field by 4.15$ what is the problem and how can i ...
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45 views

Unspent bitcoin transaction

So about two weeks ago i sent bitcoin to a friend, and it was confirmed but in the summary it was listed unspent, he claimed not to have received. I was really confused since then, now this morning i ...
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1answer
27 views

How to know e-Wallet with xpub

How can I know what's e-wallet name provide the wallet? When I know xpub and xprv and mnemonic When I get mnemonic (12 words) and get xpub I can get balance with blockchain API But how can I know ...
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22 views

How can i import a btc wallet into blockchain api v2

Hello I will use the bitcoin wallet api v2 to make payment from my website. My problem is i need to import my electrum wallet into blockchain wallet api v2, in the documentation i see that can be ...
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1answer
3k views

My BTC was stolen using my Blockchain pairing code

I was having a issue with my blockchain account, so I searched for help on Facebook. Then I got a message from some obviously not related to Blockchain (I didn't know this at the time) but acted as ...
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1answer
109 views

Bug in copying BTC address

I'm new here but I've been in the crypto world since 2016, today I'm going to tell you what just happened to me. I had to send 25 euros to the address: 3Lch25qM9kKNEydEKKCKc2Em1naHBLN44y After an hour ...
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1answer
73 views

Bitcoin core has been stuck syncing to the network

This keeps repeating in the log file: 2020-04-16T23:59:53Z ERROR: AcceptBlockHeader: block 0000000000000000000fb8b3828b04c17205ffcdedddc8be1d400d132d336460 is marked invalid
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10 views

How to do transactions to imported wallet address back to my wallet [duplicate]

I invested with this miner she asked for R6000 to confirm my transaction then again asked for other money in order for me to receive my money. Yes I do see the money on my wallet but it state non-...
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2answers
61 views

Trying to locate my bitcoins

I was working with a broker, now my "bitcoins" are in "blockchain", and I have no trace. How do I find them? How do I find said blockchain and bitcoins ?
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1answer
30 views

How do I ask other nodes for their stale blocks?

I want data on as many stale blocks as possible. Is there a way to ask peer nodes to run "getchaintips" and get their results? Previously, I used Blockchain.info's API call for this, but it seems ...
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2answers
96 views

Recovering Blockchaininfo wallet in Electrum wallet

I have my wallet in blockchaininfo and I did the backup of my 12 words (SEED). I would like to open this wallet in Electrum, I notice that Electrum allow to recover a wallet using a SEED from ...
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1answer
42 views

How to determine if BTC has been received from a particular address

I have been wondering if there is an api available that can enable me know if a certain amount of Bitcoin has been received from a particular wallet address. For the moment I have only be ...
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0answers
22 views

How could be useful the softforks field that provides the RPC command getblockchaininfo?

When I execute the command getblockchaininfo I see useful information but I don't understand how to be useful the information that is displayed through field softforks, the example below: bitcoin-cli ...
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1answer
176 views

Blockchain Imported Address

I have created a blockchain wallet after l loaded it the next day the balance was zero but l have realized there is an imported address which l didn't import. Is there any way l can recover the funds ...
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1answer
147 views

How do I get wallet balance using xPub address with blockain.info api? [closed]

I am using blockchain.info api. I know how to get wallet balance using wallet id and password. Couldn't find how to find wallet balance using my xPub address.
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0answers
35 views

Is there a way to test Blockchain.info APIs? [closed]

I'm trying to set up Blockchain.info web APIs to notify me when I receive a BTC payment: https://www.blockchain.com/api/api_receive So say, if I generate a receiving address as such: https://api....
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1answer
135 views

Withdraw and deposit in cryptocurrency exchange website

In an exchange website we just book trades in our database and just when user want to withdraw his BTC balance we make a real transaction in bitcoin network for him. Consider a scenario that a user ...
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1answer
1k views

Bitcoins gone missing in Blockchain Wallet

My wallet password was not compromised but my bitcoins have gone missing from my wallet with a transaction that says - replace by fee. I have send two messages to support at Blockchain to find out ...
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1answer
22 views

Improve uniqueness of block for nonce creation

I am going through online Blockchain course and in the course, they have mentioned that uniqueness of a block is defined using hashes with leading zeros as well as timestamp. Since, in the training, ...
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1answer
49 views

Bitcoin not received since 3days now [closed]

Two different bitcoin payment was sent I sent into one Wallet Address requested, But only one came into my wallet successfully. But I am yet to receive the second one, and when I try to look it up on ...
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1answer
36 views

How is Bitcoin/Blockchain programmed to do multi transaction at the same time?

I read this article blockchaing stored and now I am bit confused. In this article it is described, that the transaction needs 15 seconds to propagate to the whole blockchain network. I know that the ...

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