New (3) from $479.00 + $4.60 shipping Ledger Nano S - Cryptocurrency hardware wallet Available from these sellers.TREZOR - The Bitcoin Safe (Grey) 97 TREZOR - The Bitcoin Safe (Black) 97 TREZOR - The Bitcoin Safe (White) 97 .999 Fine Gold Bitcoin Commemorative Round Collectors Coin - Bit Coin is Gold Plated Copper Physical Coin 150 Product description Ledger Nano S is a Bitcoin, Ethereum and Altcoins hardware wallet, based on robust safety features for storing cryptographic assets and securing digital payments.It connects to any computer (USB) and embeds a secure OLED display to double-check and confirm each transaction with a single tap on its side buttons.LATEST GENERATION HARDWARE When you own cryptocurrencies, you need to protect your confidential data and the access to your funds.With Ledger Nano S, secrets like private keys are never exposed: sensitive operations are isolated inside your hardware wallet within a state-of-the-art Secure Element, locked by a PIN code.

Transactions can't get tampered with, they are physically verified on the embedded screen with a simple press on a button.PAY AND AUTHENTICATE Ledger Nano S includes Bitcoin, Litecoin, Ethereum and Ethereum Classic companion apps, and other blockchain-based cryptocurrencies.You can send and receive payments, check your accounts and manage multiple addresses for each currency from the same device.Nano S also supports the FIDO® Universal Second Factor standard that simplifies the authentication process on compatible online services such as GMail, Dashlane, Dropbox or GitHub.Product information Product Dimensions 5.1 x 3.1 x 1.1 inches Item Weight 3.5 ounces Shipping Weight 3.5 ounces Manufacturer Ledger ASIN B01J66NF46 Origin Imported Item model number Nano S Customer Reviews 4.3 out of 5 stars Best Sellers Rank #2,166 in Electronics (See Top 100 in Electronics) #2,115 in Electronics > Computers & Accessories July 28, 2016 Warranty & Support Product Warranty: For warranty information about this product, please click here Feedback If you are a seller for this product, would you like to suggest updates through seller support?

See questions and answers 5 star71%4 star10%3 star9%2 star3%1 star7%See all verified purchase reviewsTop Customer ReviewsLove the product, quality, and company.bitcoin ipo 2014The build and quality of the Nano S is nice.bitcoin hoat dong the naoThe screen is welcoming but very limited as ... Sleep like a baby knowing your cryptocurrency is safe and soundPossibly the best hardware wallet solution on the market.There is no reason to keep your coins on exchanges - Thank you Nano SOverall a great product.bitcoin wiki calculatorThe instructions on how to use Dash ...Secure, Convenient, and Safe.Safe and very sound Customer Images See all customer images Most Recent Customer ReviewsSearch Customer Reviews See and discover other items: build your own computergithub bitcoin miner

bitcoinj is a library for working with the Bitcoin protocol.It can maintain a wallet, send/receive transactions without needing a local copy of Bitcoin Core and has many other advanced features.bitcoin meetup argentinaIt's implemented in Java but can be used from any JVM compatible language: examples in Python and JavaScript are included.china bitcoin facilityIt comes with full documentation and many large, well known Bitcoin apps and services are built on it.land of bitcoin scriptYou can download the library as a JAR, or use Maven/use Gradle, or get the code from github.bitcoin library iosThen read: Important announcements: If you use bitcoinj in an application please sign up for the announcement list so you know when new versions are available and if there are critical bugs found.circle bitcoin limit

Be aware: this library is Apache licensed.By using it, you agree with the terms of that license.In particular pay attention to section 7 and 8, which assert there is NO WARRANTY that this library is safe to use or bug free, and in fact that by using this code you accept that none of the contributors shall be liable for any damages or monetary loss that results from your use of their code, even if due to bugs in that code.In short, according to the license the library is distributed under, there are no situations in which you could sue any of the developers (it's as if you wrote the entire library yourself).If you can't handle that, don't use this library.There are also some more in depth articles covering various topics.For best understanding, read them in order.You can read the release notes for each release starting from 0.3.Android and iOS phones under threat as secret crypto keys can be stolen for Bitcoin Wallets and Apple Pay March 4, 2016 11:08 GMT Digital data, mainly financial, may be at risk for Android, iOS and other device users as cryptographic keys used in mobile wallets as Bitcoin wallet and Apple Pay can be stolen according to new research.

A cryptographic key is the core part of cryptographic operations used commonly in digital asset transactions where a variable data is provided as input to a cryptographic algorithm to execute a specific operation.The attack, in fact, in so non-invasive that it can be conducted by merely placing a magnetic probe in the proximity of the device, or using a power tap on its USB charging cable.It does not require any malicious software to be installed on the device or opening the device's case to tamper with hardware.The attack may seem far-fetched but if carried out will expose the victims to low-cost physical attacks resulting in theft of signing credentials and subsequent unauthorised transactions or false authentication in digital payments."An attacker can measure these physical effects using a $2 magnetic probe held in proximity to the device, or an improvised USB adapter connected to the phone's USB cable, and a USB sound card.Using only such measurements, one can fully extract secret signing keys," said the researchers in a blog post.