Skip to main content

Questions tagged [blockchain.info]

Blockchain Ltd. is a company that offers a web wallet and provides a blockchain explorer under the domain blockchain.com.

Filter by
Sorted by
Tagged with
45 votes
10 answers
198k views

How to unstuck a low-fee transaction with blockchain.info?

I've sent a transaction from blockchain.info, but accidentally included too little fee. What can I do to cancel the transaction or speed up the transaction's confirmation? This is a complementary ...
Murch's user avatar
  • 76k
13 votes
4 answers
504 views

Scenario: disaster splits the Internet into dozens unconnected fragments

Major US cities restore connectivity locally for a couple of days, but the internet islands are separated (or have very poor interconnectivity). Two days later, connectivity is restored resulting in, ...
sigma02's user avatar
  • 131
-1 votes
1 answer
2k views

Recovering the private key from a blockchain wallet address

One of my friends used my wallet to import a funded blockchain wallet to my wallet id. First this wallet is watch-only and I can't spend the bitcoins inside this wallet because I need the private key. ...
Onams's user avatar
  • 1
8 votes
2 answers
7k views

How to solve Blockchain 20 address gap-limit problem?

We currently offer Bitcoin withdrawals and deposits on our website. Blockchain API is used to handle all operations. Only problem is Blockchain Receive API's 20 address gap limit, as mentioned here: ...
Bitcoin Billionaire's user avatar
8 votes
4 answers
26k views

Get BCH from blockchain.info after fork

I had a fraction of BTC on blockchain.info before the 1st of August and I didn't touch them at all afterwards. I never got my private keys (nor the 12 words) from my blockchain.info wallet (or if I ...
Gabe's user avatar
  • 195
8 votes
1 answer
1k views

What method does My Wallet use to encode messages in the blockchain?

What kind of protocol does My Wallet use?
ripper234's user avatar
  • 26.6k
19 votes
1 answer
5k views

How does blockchain.info calculate the "Estimated Transaction Value?"

Consider the following transaction: https://blockchain.info/tx/aa5eb27652bd85dc444ea2508bf0ff6ff1b484141e2d7e69f31976fafb21e06e Each of the output addresses has never before been used, and there is ...
Yaacov's user avatar
  • 301
10 votes
5 answers
18k views

How to restore locally a MyWallet backup?

The website blockchain.info has an online wallet system MyWallet which creates backups with a .aes.json extension. While I understand it's a json file encrypted with AES using my passphrase, I'm still ...
o0'.'s user avatar
  • 5,230
1 vote
1 answer
6k views

Is it possible to identify a wallet from an address?

I want to know is there anyway to identify a particular wallet (its username or email address) on the basis of a Bitcoin receiving address which is generated from that wallet. I am posting that ...
anshul sharma's user avatar
29 votes
12 answers
19k views

Is there a blockchain.info for testnet? [duplicate]

I'm trying to test to see if transactions went through or not and blockchain.info is super helpful for this on the real network.
Shamoon's user avatar
  • 2,849
7 votes
1 answer
7k views

In case of the Bitcoin split - when holding BTC on blockchain.info - will I receive coins on both forks?

Everyone says: If you do not hold private key to your BTC, you do not own BTC. Technically speaking I do not hold the private key, but I do have the 12 words backup phrase. I would like to know ...
Mars Robertson's user avatar
0 votes
1 answer
1k views

Where do I obtain private keys?

Just received my profits from a "watch only" address, where do I obtain private keys?
Katlego Maphutha's user avatar
15 votes
2 answers
21k views

What is the fastest possible way to download the blockchain?

How to download the blockchain with full bandwidth? How to download the blockchain fast?
Aurigae's user avatar
  • 664
6 votes
1 answer
2k views

How block explorer technology works?

If you click on random wallet at block explorer you get an instant info of all the transactions, balance etc etc. My question is, how their technology works exactly? Do they transform blk????.dat ...
Miska's user avatar
  • 61
5 votes
1 answer
217 views

Does blockchain.info backup wallet include also the next addresses

The standard client's wallet includes a key pool of 100 extra pre-generated addresses, which are the next ones to be "generated" when you ask an extra address. Does the blockchain.info's backup ...
o0'.'s user avatar
  • 5,230
4 votes
2 answers
2k views

How does blockchain.info associate a message with an address? [duplicate]

I randomly encountered this address on blockchain.info: https://blockchain.info/address/1CzpppydnGN5dQN7iBnZbmm5RXreu7hrHW and at the top a message appears presumably describing the owner of the ...
Jon Lund Steffensen's user avatar
4 votes
2 answers
920 views

Accepting Bitcoin payments without the full blockchain or third party APIs?

I want to make a basic program/script that utilizes Bitcoin payments, but I don't have the storage space to sync with the entire blockchain, and I don't want to be dependent on a third-party API like ...
user avatar
2 votes
2 answers
1k views

Wallet recovery phrase

Due to a copying error the last word of my 12 word mnemonic recovery phrase for blockchain is missing. Just wondering if anyone knows of any software that could generate words and automatically test ...
Jaemes 's user avatar
1 vote
2 answers
5k views

Accidentally sent to my own receiving address, will I get back my bitcoins?

I mistakenly pasted my own Blockchain.info receiving address into the recipient field when I was trying to send BTC to a friend. I usually receive either a "send" or "receive" notification in my ...
Alber Gaviria's user avatar
1 vote
2 answers
13k views

How can I recover a blockchain.info wallet from a 17 word phrase?

I have a wallet at blockchain.info which I've opened about 4 years ago. Right now I cannot access it. It looks like the site is sending me a verification email, but sadly I don't know which address it ...
jackHardy's user avatar
1 vote
2 answers
2k views

Unable to get private key for Blockchain wallet

I am new to BTC and I have a question: How to get private key from Blockchain wallet for a "Watch only" address? I have been trying for days with no positive results. Thanks.
Peter's user avatar
  • 11
0 votes
6 answers
14k views

How to get the list of transactions of input/outputs for a bitcoin address in JSON format?

Is there an example of how to get all the transaction data for a bitcoin address in json format?
Patoshi パトシ's user avatar
0 votes
1 answer
2k views

To generate private key

How can I generate a private key to spend the bitcoin of a watch only addresses that is in the imported addresses of blockchain.info?
JAI MAHADEV's user avatar
0 votes
2 answers
490 views

blockchain account has watch onl on i

blockchain have been zero help. I need to know how I can get a private key to release my funds I transferred funds from the exchange blockchain lost it. I had to find it myself I transferred it to ...
brazzman's user avatar
-1 votes
1 answer
530 views

I NEED YOUR HELP URGENTLY Bitcoins

I really need your help on this. It has stated in my wallet that i've received my bitcoins of 1.182691BTC on 29/05/18. This's my wallet address: muFjdWSy2DKStSP2gUH2aHZq6kRBva8ZDV it stated on the ...
Kayley Wong's user avatar
-2 votes
1 answer
606 views

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

Contact Information: [email protected] General information support: [email protected] Support and online transaction search with full and detailed information: support@securitycrypto....
Sandra's user avatar
  • 1
17 votes
7 answers
53k views

Dumping private keys from wallet.dat from command line (pywallet.py alternatives)

I have somewhere in my hard disks some copies of old wallets which I need to analyse. My idea was importing them into blockchain.info, but to do that apparently you need to dump them with pywallet.py,...
o0'.'s user avatar
  • 5,230
13 votes
3 answers
13k views

What are the equations to convert between bits and difficulty?

If we take block hash 0000000000000006770c3806960539ca83a24facbd99ea212f37f2a0e6a5629a for example. The difficulty as a 32 bit float is 50810339.04827648. The difficulty in bits as an unsigned 32 bit ...
Dan's user avatar
  • 419
11 votes
1 answer
7k views

publicly available json-rpc node for bitcoin-cli connection

There is a service provided by blockchain.info described on json_rpc_api page. More or less it describes the API that user can use to access their blockchain similar way as using bitcoin-cli to own ...
jangorecki's user avatar
9 votes
5 answers
9k views

Download single and specific block for study purposes

I just started studying bitcoin. I would like to be able to download a single block from the Bitcoin network. This should be an old block, already mined, and which I can know the nonce. Then I ...
Jacquelyn.Marquardt's user avatar
9 votes
3 answers
3k views

Can an unconfirmed transaction that only Blockchain.info shows be manually re-broadcast?

Blockchain.info shows a transaction that was created by Blockchain.info/wallet but for whatever reason the transaction didn't confirm right away and appears to not be getting re-broadcast (perhaps ...
Stephen Gornick's user avatar
8 votes
1 answer
12k views

Extract private keys from Bitcoin Wallet

I have encrypted my bitcoin wallet. I know the passphrase, that's not the issue. I want to transfer my bitcoins to blockchain.info but it's asking me for the private key. I cannot find it nor can I ...
Danny's user avatar
  • 83
8 votes
4 answers
8k views

What does "Unable to decode output address" mean?

On BlockChain.info, I have noticed a few transactions which send money to "Unable to decode output address". For example, here is one: https://blockchain.info/tx/...
Scott's user avatar
  • 822
5 votes
2 answers
3k views

How can I use multisig / split keys using My Wallet?

I was sure that My Wallet supported multisig, but I can't seem to find it now. How can three users of My Wallet create an address that is only spendable if at least two of them cooperate? Or is this ...
ripper234's user avatar
  • 26.6k
4 votes
4 answers
14k views

Can someone explain to me how do you read the blockchain.info transaction data?

Ok so i've been using bitcoin for some time now, but i never figured out how to read the blockchain.info transaction data. Here's a sample of what I mean: http://prntscr.com/2dj7tr --- https://...
Patoshi パトシ's user avatar
4 votes
2 answers
2k views

Why does blockchain.info show a different balance from bitcoin-qt?

I just created a wallet on blockchain.info by importing my wallet.dat from Bitcoin-QT. My Bitcoin-QT shows a balance of 3.991 BTC, while blockchain.info shows a balance of 3.016. Where does the ...
Sietse's user avatar
  • 153
4 votes
2 answers
2k views

Coinbase to Block Chain Transfer Delay

I recently sent a friend of mine around $950 in BTC from Coinbase to his BTC wallet on BlockChain.info. The transaction is showing up as completed in my account, but he claims he has not received the ...
Connor Mack's user avatar
3 votes
1 answer
2k views

Callback not working in program using the blockchain api

I am trying to create automated receive Bitcoin payments via Blockchain API. I have my API key, xpub, everything. I'm using PHP. Here is the part of my code for generating wallet address: $scrt = ...
Fero's user avatar
  • 31
3 votes
1 answer
270 views

Get blockchain info for exchange transaction

I'm sorry in advanced if this questions are dumb but here goes ... Does all buy/sell bitcoin related transactions made in exchanges get logged in the blockchain? if so can they be found and/or ...
Omribitan's user avatar
  • 133
3 votes
1 answer
125 views

What actions trigger the need to obtain a new backup with Blockchain.info/wallet?

Other clients, including Bitcoin-Qt, use a key pool so that a backup is still valid for a while. Blockchain.info/wallet doesn't use a key pool. After a backup of the wallet is obtained and archived, ...
Stephen Gornick's user avatar
3 votes
0 answers
14k views

Any way to delete unconfirmed transaction? [duplicate]

Recently I sent some bitcoins without adding a fee and now, it's been taking too long. Is there any way I can recover my bitcoins? I want to delete my unconfirmed transactions from Blockchain.info? I ...
Lt.Bitcoin's user avatar
3 votes
1 answer
3k views

What is the transaction ID?

I have sent a Bitcoin amount to someone who wants the transaction ID. What is this? Is it the hash shown on the LHS of the transaction?
Graeme's user avatar
  • 31
3 votes
1 answer
548 views

Does the mempool size equal roughly the unconfirmed transactions?

My bitcoind (v0.13.0) mempool size is currently 12k transactions as can be seen from: tail -f ~/.bitcoin/debug.log I find this number very surprising as I naively expected it to keep in line with ...
Sven Williamson's user avatar
3 votes
2 answers
2k views

Why is the transaction fee a multiple of the amount I want to send?

I tried sending 0.0001 BTC from my blockchain.info wallet. It deducted 0.0009 BTC from my account, including a 0.0008 BTC is transaction fee. Is it correct that the transaction fee is 8 times larger ...
mmm's user avatar
  • 31
2 votes
1 answer
652 views

Why was Blockchain.info DecryptWallet removed?

https://blockchain.info/DecryptWallet.html has been removed for quite some time. Anyone know why? PS. FWIW, an archived copy at Pastebin
Wizard Of Ozzie's user avatar
2 votes
1 answer
6k views

How do I import to MultiBit from Blockchain.info?

I have a single password and a yubikey on my account at blockchain.info. When I try to import the wallet.aes.json file nothing happens. When I select the import file, MultiBit never displays the '...
akraut's user avatar
  • 121
2 votes
1 answer
497 views

Sites for searching the blockchain?

This is a general question, but what's the best way to search the blockchain? Blockchain.info lets you search by address, but it seems to be a side feature instead of its central purpose. Are there ...
Crashalot's user avatar
  • 265
2 votes
1 answer
2k views

How does one submit a transaction to the network using the blockchain.info API?

I am currently working on a project which makes use of the blockchain.info api (php). Could anybody please tell me how to use this api to submit transactions to the network?
user31070's user avatar
2 votes
2 answers
905 views

What options do I have to avoid API gap limit? I am using xpub keys

I am building a app, and the design is, the "welcome page" has a qr code allowing the user to purchase a single-use of the app. Blockchain.info conveniently allows you to use xpub to generate ...
patrick's user avatar
  • 233
2 votes
1 answer
614 views

ELI5: How do I import keys from blockchain.info backup into MultiBit 0.5.18

So, blockchain.info is holding my account hostage. My phone with my 2FA was lost (and remotely wiped) and they refuse to remove the 2FA on my account to get access. I have a recent backup of my keys ...
user15737's user avatar