Difference between revisions of "Blockchain.info"

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[http://www.BlockChain.info BlockChain.info] is a utility site offering a number of free ad-supported services:
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{{infobox company|name=Blockchain Luxembourg Ltd.|image=[[File:Blockchain.info.png|256px]]
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|trading_name=Blockchain
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|industry=[[eWallet]]
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|foundation=August 30, 2011<ref>{{cite btct|id=40264|title=New block explorer type site needs testing / feedback|date=2011-08-30}}</ref>
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|founder=[[PiUK]]
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|website=[http://blockchain.info blockchain.info]
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|facebook=blockchain
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|twitter=blockchain
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}}:''Not to be confused with the [[block chain]].''
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[http://www.Blockchain.info Blockchain.info] ([https://blockchainbdgpzk.onion/ TOR onion site]) is a utility site offering a number of free ad-supported services:
  
 
* Alternative [[block chain browser]]
 
* Alternative [[block chain browser]]
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* Live updating list of unconfirmed transactions
 
* Live updating list of unconfirmed transactions
 
* Data and charts providing insight into the Bitcoin P2P network   
 
* Data and charts providing insight into the Bitcoin P2P network   
* Double spend tracking
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* [[Double-spending|Double spend]] tracking
 
* JSON and block explorer compatible api
 
* JSON and block explorer compatible api
 
* Multi-signature coordination service (for use with M-Of-N transactions)
 
* Multi-signature coordination service (for use with M-Of-N transactions)
 
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* Mixing Service
Bitcoins may be purchased through the site [https://blockchain.info/wallet/sms-phone-deposits using SMS / mobile].  Purchases are limited in frequency and amount.
 
  
 
The site's [http://status.blockchain.info/500250 availability status and service history] is monitored using PingDom.
 
The site's [http://status.blockchain.info/500250 availability status and service history] is monitored using PingDom.
  
The site was launched on August 30, 2011<ref>[http://bitcointalk.org/index.php?topic=40264.0 Blockchain.info - Bitcoin Block explorer & Currency Statistics]</ref>, originally as the PiUK-BlockChain-Browser. It is maintained by [[User:Piuk|Ben Reeves]] and was built with the intended purpose of recording double spend attacks and various currency statistics.
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The site was launched on August 30, 2011, originally as the PiUK-BlockChain-Browser. It was built with the intended purpose of recording double spend attacks and various currency statistics.
  
 
On March 26, 2012 the Blockchain for Android mobile app was released<ref>[http://bitcointalk.org/index.php?topic=74191.0 Blockchain.info android wallet]</ref>.  On April 20, 2012 the Blockchain ios app for the Apple iPhone, iPod touch and iPad was released globally on the App Store<ref>[http://bitcointalk.org/index.php?topic=75673.0 iPhone IOS Bitcoin wallet is here! (From Blockchain.info)]</ref>.
 
On March 26, 2012 the Blockchain for Android mobile app was released<ref>[http://bitcointalk.org/index.php?topic=74191.0 Blockchain.info android wallet]</ref>.  On April 20, 2012 the Blockchain ios app for the Apple iPhone, iPod touch and iPad was released globally on the App Store<ref>[http://bitcointalk.org/index.php?topic=75673.0 iPhone IOS Bitcoin wallet is here! (From Blockchain.info)]</ref>.
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==Wallet==
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The wallet available from this service is considered a [[Browser-based_wallet#Hybrid_e-wallets|hybrid EWallet]].  This means that the coins are not stored with Blockchain.info, but instead held in your browser.  There is an encrypted copy of your wallet stored on Blockchain.info's server, but that does not have your wallet password and thus cannot access or spend from your wallet.
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The same wallet is accessed using the Blockchain for Android mobile wallet.
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To access the wallet, the wallet identifier needs to be known or bookmarked.  To allow for the wallet to be accessed using an easily-remembered word or term, the service allows you to enter an alias to the wallet identifier.
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===Security===
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Access to the wallet requires a password.  After multiple successive failed attempts to login (e.g., five) the account will be locked for a period of four hours<ref>[http://bitcointalk.org/index.php?topic=40264.msg1081388#msg1081388 Blockchain.info - Bitcoin Block explorer & Currency Statistics]</ref>.
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Mutli-factor authentication is available to further protect access to the wallet.  This authentication is valid for the session for a limited amount of time<ref>[http://bitcointalk.org/index.php?topic=40264.msg1124987#msg1124987 Authentication somehow remembers me]</ref>.  These methods include:
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* Google Authenticator
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* e-mail verification
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* SMS
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* YubiKey
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===Backups===
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Though the service does store an encrypted copy of your wallet, the recommendation is for the wallet owner to also keep a backup copy of the encrypted wallet. Configuring an e-mail address in the account details will then make it possible to manually request that a backup of the wallet be sent by e-mail to that address. There will also be a backup sent if there were any changes to the wallet, such as after importing private keys. If you are backing up by email enable 2 factor authentication on the email account as well. Blockchain.info does not ask for their sites' 2FA when importing from backup. A hacker who gained access to your email account can import and empty your wallet if he finds your wallet password. Otherwise this backup is generally secure because the wallet is encrypted though wallet owners holding larger balances may want to obtain advice from a security professional regarding the risks.
  
 
==Mobile Apps==
 
==Mobile Apps==
  
* [https://play.google.com/store/apps/details?id=piuk.blockchain Blockchain for Android] on Google play
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* [https://play.google.com/store/apps/details?id=piuk.blockchain Blockchain for Android] on Google play ([https://github.com/zootreeves/My-Wallet-Android GitHub])
* [http://itunes.apple.com/us/app/blockchain/id493253309 Blockchain for iOS] on App Store
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* [http://itunes.apple.com/us/app/blockchain/id493253309 Blockchain for iOS] on App Store ([https://github.com/zootreeves/My-Wallet-iPhone GitHub])
  
 
===Security===
 
===Security===
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* [http://www.blockchain.info Home page]
 
* [http://www.blockchain.info Home page]
 
* [https://blockchain.info/wallet/payment-notifications Payment Notifications]
 
* [https://blockchain.info/wallet/payment-notifications Payment Notifications]
* [https://blockchain.info/wallet/escrow Escrow Service]
 
 
* [https://blockchain.info/wallet/demo-account My Wallet demo account]
 
* [https://blockchain.info/wallet/demo-account My Wallet demo account]
* [https://blockchain.info/wallet/sms-phone-deposits Deposit Using Phone/SMS]
 
 
* [https://play.google.com/store/apps/details?id=piuk.blockchain Blockchain for Android] on Google play
 
* [https://play.google.com/store/apps/details?id=piuk.blockchain Blockchain for Android] on Google play
 
* [http://itunes.apple.com/us/app/blockchain/id493253309 Blockchain for iOS] on App Store
 
* [http://itunes.apple.com/us/app/blockchain/id493253309 Blockchain for iOS] on App Store
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[[Category:eWallets]]
 
[[Category:eWallets]]
 
[[Category:HybridEWallets]]
 
[[Category:HybridEWallets]]
[[Category:Escrow_services]]
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[[Category:Mixing_Services]]
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[[Category:Wallets]]

Latest revision as of 00:20, 26 August 2015

Blockchain Luxembourg Ltd.
Blockchain.info.png
Trading nameBlockchain
IndustryeWallet
FoundedAugust 30, 2011[1]
Founder(s)PiUK
Websiteblockchain.info
 Twitter  Facebook 
:Not to be confused with the block chain.

Blockchain.info (TOR onion site) is a utility site offering a number of free ad-supported services:

  • Alternative block chain browser
  • Javascript-based eWallet
  • Payment notification/alerts
  • Live updating list of unconfirmed transactions
  • Data and charts providing insight into the Bitcoin P2P network
  • Double spend tracking
  • JSON and block explorer compatible api
  • Multi-signature coordination service (for use with M-Of-N transactions)
  • Mixing Service

The site's availability status and service history is monitored using PingDom.

The site was launched on August 30, 2011, originally as the PiUK-BlockChain-Browser. It was built with the intended purpose of recording double spend attacks and various currency statistics.

On March 26, 2012 the Blockchain for Android mobile app was released[2]. On April 20, 2012 the Blockchain ios app for the Apple iPhone, iPod touch and iPad was released globally on the App Store[3].

Wallet

The wallet available from this service is considered a hybrid EWallet. This means that the coins are not stored with Blockchain.info, but instead held in your browser. There is an encrypted copy of your wallet stored on Blockchain.info's server, but that does not have your wallet password and thus cannot access or spend from your wallet.

The same wallet is accessed using the Blockchain for Android mobile wallet.

To access the wallet, the wallet identifier needs to be known or bookmarked. To allow for the wallet to be accessed using an easily-remembered word or term, the service allows you to enter an alias to the wallet identifier.

Security

Access to the wallet requires a password. After multiple successive failed attempts to login (e.g., five) the account will be locked for a period of four hours[4].

Mutli-factor authentication is available to further protect access to the wallet. This authentication is valid for the session for a limited amount of time[5]. These methods include:

  • Google Authenticator
  • e-mail verification
  • SMS
  • YubiKey

Backups

Though the service does store an encrypted copy of your wallet, the recommendation is for the wallet owner to also keep a backup copy of the encrypted wallet. Configuring an e-mail address in the account details will then make it possible to manually request that a backup of the wallet be sent by e-mail to that address. There will also be a backup sent if there were any changes to the wallet, such as after importing private keys. If you are backing up by email enable 2 factor authentication on the email account as well. Blockchain.info does not ask for their sites' 2FA when importing from backup. A hacker who gained access to your email account can import and empty your wallet if he finds your wallet password. Otherwise this backup is generally secure because the wallet is encrypted though wallet owners holding larger balances may want to obtain advice from a security professional regarding the risks.

Mobile Apps

Security

Users of the Blockchain mobile app may wish to add the second password capability (configured through Account Details -> Security) so that bitcoins cannot be spent without the additional password.

See Also

External Links

References