Blockchain.info is a service that offers [tag:e-wallets], and allows exploration of the blockchain.

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Why does Blockchain.info's My Wallet tx volume seem to exceed to total bitcoin network volume?

I was looking at Blockchain.info's tx volume (in BTC) over the previous year. It goes from about 100k to 400k BTC per day with a peak of over 850k BTC around November. ...
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15 views

Blockchain Receive Payments API: How to send money to input_address?

I use Blockchain's Receive Payments API. It generates input_address and callback works fine. But when I tried to send money to input_address (on the Blockchain Send Money page), it sends money to ...
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13 views

javascript convert from usd to btc (Is btc-e ticker faulty?)

Is the https://btc-e.com/api/3/ticker/btc_usd ticker faulty? My code takes a long array of btc-e raw price data (there ticker) and tries to convert each price into Satoshi. The array is named ...
0
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0answers
13 views

Using custom parameters in blockchain.info's HTTP payment callback

I have a node.js app that uses blockchain-wallet npm module to generate a new receiving address every time a client wants to pay. blockchainWallet.newAddress({label:customstring},function(err, ...
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1answer
44 views

Get a list of txs that can be used for a newer tx

I'd like to write a simple Bitcoin client that broadcast transactions. The model is pretty simple: Alice wants to send 10 BTC to Bob. We only know Alice's private key and Bob's address. For ...
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1answer
61 views

Bitcoin POS: payments between seller and buyer

My application has sellers with stored (public) Bitcoin addresses - lets say "receiving address". Also application allows anonymous buyers who can buy goods from these sellers paying by bitcoins. ...
1
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1answer
38 views

OP_Return in transactions at json_rpc_api at blockchain.info

I am writing a project in Ruby using JSON-RPC to communicate with blockchain.info. The API is available here: https://blockchain.info/api/json_rpc_api Is it possible to create a op_return txout using ...
1
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1answer
81 views

Is there a way to use My Wallet account with bitcoin-qt client?

I have some funds on My Wallet account (Blockchain.info) and I'd like to have a possibility to use them with my bitcoin-qt client. Is there a possibility to do that? Please give short description. I ...
2
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1answer
52 views

Security: Blockchain.info vs bitcoind

I want to set up a website that needs an online bitcoin wallet (able to deposit and withdraw at any time). Would it be better to use the blockchain.info's infrastructure through API commands or should ...
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3answers
70 views

Bitcoin transaction with dust output stuck

I made this transaction more than 24 hours ago, and it still has no confirmations at all. What should I do? This transaction was created by the mobile Blockchain.info wallet. At the time, it didn't ...
2
votes
1answer
64 views

How can Bitcoins be sent without Blockchain.info knowing your private key?

Blockchain.info is a hybrid bitcoin wallet with client-side javascript encryption. I understand that the wallet.aes.json where the private keys are stored is encrypted (client-side). But how can ...
0
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1answer
28 views

How do addresses that refer to a web site work? [duplicate]

Some bitcoin addresses on blockchain.info refer to an external website, see e.g. here: https://blockchain.info/tx/40c09e1fb345d258b8123c5e6ceda3d53575def3053c87bf7d5571c74fc2227d One of the ...
0
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1answer
27 views

Block chain api support - Im unable to seperate the credit and debit transactions using blockchain api

I'm using blockchain api to display transactions of credits and debits seperately, I'm using the below procedure for displaying credit and debit transactions. But credit transactions are showing in ...
2
votes
1answer
22 views

Difference between Outpoint structure returned from Blockchain.info and what is in the Protocol Specification

if you follow this link, you will see a specific bitcoin address. If you look closely at the prev_out field, it is not an outpoint structure. Inside of the protocol specification under transactions, ...
0
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2answers
65 views

Block Chain API for BTC transactions

I want to fetch transactions for an address from the following api: https://blockchain.info/address/$btc_address?format=json The thing is understanding the json returned from the api, I don't ...
2
votes
1answer
19 views

What does the main_chain value returned by blockchain.info mean?

What does it mean that for bitcoin block to be on the Main Chain? What other chains are there? Is this as opposed to testnet? This is regarding the main_chain value in the blockchain.info api here: ...
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0answers
50 views

API Call when a transaction is unconfirmed

Is there a way to get blockchain.info API call to know when the network sees an unconfirmed transaction? I'm also interested in any other method to get this result. The API works fine on the first ...
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0answers
69 views

BlockChain.info testnet wallet and API

Does blockchain.info provide wallets and API service for testnet? This information is quite hard to find from their site.
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1answer
45 views

How to get started with a Bitcoin wallet [closed]

Where should I go to start a wallet? I have downloaded the TOR browser and got online at WEUSECOINS.COM. Is there another site, perhaps one with more information for beginners, that I should be ...
0
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1answer
64 views

Blockchain.info, How to receive new transactions (not websocket)

I'm trying to build safe transaction-confirmation app and need to synchronize new not-processed transactions. For example I monitor address A and have processed last transaction B, how can I ask ...
0
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0answers
106 views

Blockchain.info Wallet API: How can I send bitcoin without transaction fee

I am using Blockchain.info Wallet API for sending bitcoin. According to the API document, transaction fee must be greater than default fee. I tried to put the fee was 0 but the setting was ignored. ...
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0answers
85 views

Blockchain.info : “Insufficient Funds Available” [closed]

When I sent bitcoin to an address by using Blockchain.info API, I got "Insufficient Funds Available" error. Like below.. [API Request] ...
0
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1answer
45 views

using blockchain.info api_code

I make a JSON call to https://blockchain.info/tobtc?currency=USD&value=1 This is a free api with a request limit. I have just received my api_code via email. This is blockchain.info's example ...
0
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1answer
23 views

Blockchain.info keeps sending wallet backups

Blockchain.info is sending my wallet backups over and over again; is this someone trying to hack my wallet or something else? I haven't done anything on my account, no settings changed et cetera.
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1answer
103 views

Blockchain.info automatic transaction

On Sep 17 I wanted to transfer 0.001 BTC from one Blockchain.info account (bitcoin address 1BFFtYPgtaZUHujDqiehqSseZvuUzJQxki) to another Blockchain.info account (bitcoin address ...
2
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2answers
80 views

How to get correct block details url with block height on blockchain.info

I need to generate urls to block details page of blockchain.info when I have block height as input but cant find the relationship between block height and the number they are using in the url. Eg: ...
2
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1answer
124 views

Orphaned blocks on September 13, 2014

I'm new in the Bitcoin World. Today I did my second transaction for just 0.005 BTC but 2 hours after, it's unconfirmed yet. The transaction is in the block 320385 and it is orphaned. I saw the ...
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1answer
96 views

What are the equations to convert between bits and difficulty?

If we take transaction hash 0000000000000006770c3806960539ca83a24facbd99ea212f37f2a0e6a5629a for example. The difficulty as a 32 bit float is 50810339.04827648. The difficulty in bits as an unsigned ...
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1answer
35 views

How does blockchain.info get miner revenue?

In the stats page of blockchain.info, I see the revenue of miners is $1,680,297.91. As I understand, its the total money that people have spent on buying their miners. But, i doubt that since its a ...
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43 views

BlockChain Info API for 2 step Authenticator

I am using BlockChain Info API to show a user his/her transaction details, below is my code: $url = "https://blockchain.info/merchant/".$guid."/list?password=".$pass; $curl = curl_init(); ...
1
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1answer
76 views

Get a JavaScript notification when Bitcoin transaction arrives to a certain address

I'd like to implement a very simple address monitoring feature on a site I'm working on. I'd like to just be able to say "Listen to this address on the testnet for money to come in", and update the ...
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0answers
48 views

When you sweep a private key at Blockchain can you sweep the key in HEX format?

It would be useful to know this because I have made a 64 character hex private key by hand and generated the address without storing the key in WIF format. I don’t want to go online, input the hex key ...
0
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1answer
86 views

Getting transactions and time from Block Chain Info Api

I want to fetch transactions for an address from the following api: https://blockchain.info/address/$btc_address?format=json The thing is understanding the json returned from the api, I don't ...
0
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1answer
313 views

How can I convert a wallet.aes.json file from Blockchain.info to a wallet.dat file?

I'd like to convert my Blockchain.info wallet to a local Bitcoin-qt wallet. How can I do that? (I am fine with using command line tools.)
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1answer
53 views

Blockchain.info not actual?

I'm really new to Bitcoining. I've made my own wallet at blockchain.info, and then I decided to get some "free" bitcoins by watchings ads or something. This worked. At leas when i login at ...
2
votes
1answer
83 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
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26 views

Is it possible to decrypt Blockchain.info wallet payload due to lost password?

I've got a Blockchain.info wallet which had the password changed (long story, but I own the account and private key therein). 2FA is not enabled, therefore the URL ...
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0answers
44 views

How do mnemonics encrypt wallet data and what prevents hacking of the algorithm?

How do mnemonics encrypt wallet data and what prevents hacking of the algorithm? For example Blockchain seems to encrypt all data using a mnemonic yet doesn't hold customer data server side. What ...
2
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1answer
34 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?
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1answer
141 views

Warning about possible double spend at blockchain.info

What does this blockchain.info alert mean? Warning! this bitcoin address contains transactions which may be double spends. You should be extremely careful when trusting any transactions to or from ...
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1answer
147 views

How to send money using blockchain API?

I am not very familiar with php but I just want to know how this works. I am trying to use the blockchain API to send some money for testing purposes but the transaction isn't taking place. My current ...
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1answer
123 views

How to use BlockChain API?

I am a complete noob to PHP. But I just wanted to know how can you use the BlockChain API to get your wallet balance. I tried but could get no result. I do not even know how to print it. Please help. ...
0
votes
1answer
87 views

How can I import a private-key to Blockchain.info in order to use it?

I recently bought a BTC-wallet from my friend. It has a cold storage wallet ("Watch only") and a private key (which is a bunch of numbers and letters). How can I use it in Blockchain.info? How do I ...
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2answers
93 views

What is a block index in blockchain.info?

On blockchain's blockchain api documentation, located here https://blockchain.info/api/blockchain_api There is an api call that uses a parameter called block_index. What is this value, and how does ...
0
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2answers
82 views

Escrow outputs show incorrect destination addresses in Blockchain.info

I'm interested in the following multisig transaction 3a0c283c8574205c2cc95cea0e603bfff9087af2ab0360ebd2e98740a3193a18 If I query bitcoind for information about it using the following command ...
0
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0answers
39 views

How can I fix a low miner fee due to errors?

I made a transaction a while back not thinking at the time give a very low miners fee (1 satoshi) and it's been a while since I sent it and it's still not confirmed and I started looking around. I ...
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1answer
40 views

how to concat our website url in our bit coin transaction in blockchain send api

Hi im using block chain send api in my web application, and it is working fine without any issues. My requirements is when the payment is done thought blockchain send api, is it possible to concat our ...
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1answer
145 views

BlockChain.info Investments? Sounds like a scam

Today I received a strange email, which looks like a scam to me. It claims to be sent from blockchain.info no-reply@blockchain.info, but being a programmer, I know that I can send email from whomever ...
0
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1answer
260 views

what is Create wallet using blockchain api (PHP)

Im wondering to know, what is use of Create wallet programitically Block chain API Block Chain api here What it will provide? Where can i get the api code? Any tutorials ? Can i provide my ...
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2answers
256 views

Is there database of orphaned blocks?

Is there database of orphaned blocks? https://blockchain.info/orphaned-blocks does not work right now Does anybody keep them? Also I am looking for those transactions which were not included in ...