Jump to: , Various views of Casascius coins Casascius physical bitcoins, also called Casascius coins, are physical metal coins created by Bitcoin user Casascius (Mike Caldwell, Sandy, Utah, USA) and sold until Nov 26, 2013[1], that contain an embedded piece of paper with digital Bitcoin value, covered by a tamper-resistant hologram.Casascius coins are available in 1, 10, 25, 100, and 1000 BTC increments. ( (PayPal and credit cards accepted).The coins are designed such that they could be circulated in face-to-face transactions.The first person to redeem its private key gets the value on the coin, and afterwards, the coin no longer has any Bitcoin value.It is difficult or impossible to read the private key on the coin without damaging or destroying the hologram, which exposes a honeycomb-like tamper-evidence pattern when peeled.The piece of paper inside each coin has a private key which forms the backing for the Bitcoin value represented by the coin.Redeeming the private key back into digital Bitcoins is currently available with a patched reference client and many of the alternative clients.

Casascius coins are similar to Bitbills in that they are an object that contains a redemption code that serves as a bearer item for digital bitcoins.There are 2 independent websites that track the status of all Casascius coins in circulation, based on information from the block chain: Contents 1 2 3 4 Second series 1 BTC Casascius coin The hologram and the private key is different, the metal part of the coin is the same as the first series.As of Nov 27, 2013, Mike Caldwell suspended sales of items that contain digital bitcoins.[1]The Financial Crimes Enforcement Network (FinCEN), a branch of the Treasury Department, informed him before, that minting physical bitcoins qualifies him as a money transmitter business, which means he needs to register at the federal level and probably get state licenses too.[3]The Coin Denarium Bitcoin is a physical coin which has actual bitcoin value inside.The coin itself is a quality brass product that is produced in Finland.

The main focus of Denarium Bitcoin is affordability.We have chosen to avoid unnecessary complexity and to keep the design fairly simple.For example, we have chosen to avoid using decimals.Our coins are valued in fractions of a bitcoin (1/10 & 1/100) and also in the newer “bits” format (100 000 bits & 10 000 bits).Hologram The hologram is a high quality custom made security seal which are produced in Canada in a specialized high security facility.It functions as an added layer of security for the protection of the private key.The hologram significantly increases anti-fraud security making it extremely difficult to counterfeit without leaving any visible marks.The holograms are labeled individually in distinct series, the E-series and the L-series.The E-series are sold as empty, meaning they are not loaded with bitcoins and the customer can autonomously load a desired amount of bitcoins to the coin.The L-series are sold as loaded meaning they contain a set amount of bitcoins, but the customer can still autonomously load more bitcoins to the coin.

The hologram has a “window” where a portion of the public Bitcoin address of the coin can be read for checking balance and loading bitcoins to the coin.Please note that also loaded multisig coins will always be an E-series!Private key All of our coins have a Bitcoin private key inside the coin.We use a 30-character mini private key format.Each private key is printed only once and for security reasons each phase of product assembly that involves the handling of private keys is directly supervised either by Henry Brade (CEO) or Viljami Räisä (CPO), or both.sc2 bitcoin openTo make redeeming the bitcoins inside easier, we print the key not only as plain text but also as a QR code.bitcoin plus payoutModern smartphones are capable of scanning the QR code inside and importing the key directly to a Bitcoin wallet such as Mycelium.stolen bitcoin private key

Demo of redeeming the private key /wp-content/uploads/2015/01/denarium-open-coin.mp4Tamper-evident stickers and the bootable CD are now 10% off.Plus, every order includes FREE SHIPPING to anywhere in the world, and a free limited edition sticker.Order here » Make Paper Wallets to Keep Your Bitcoin Addresses Safe.For long-term storage of bitcoins (or giving as gifts) it's not safe to store your bitcoins in an exchange or online wallet.These types of sites are regularly hacked.bitcoin ach depositEven keeping a live wallet on your own computer can be risky.laatste bitcoinBe your own bank.bitcoin btc secBy printing out your own tamper-resistant bitcoin wallets and generating your own addresses, you can minimize your exposure to hackers as well as untrustworthy people in your home or office.10 mh/s bitcoin

Just transfer your bitcoins into your new wallets, and use common sense to keep your wallets safe the way you would jewels and ordinary cash.Or give them away!Custom Designs The Bitcoin Foundation contracted with BitcoinPaperWallet to design a limited edition commemorative paper wallet design for distribution at the 2014 IFCA convention.You can also provide your own JPG images to create one-of-a-kind personalized wallets.What's special about this design?But first read everything on this page since you should take some precautions to make sure your new wallets are secure.das bitcoin buchNEW: Litecoin & Dogecoin paper wallets, too!ethereum widgetVideo: How to make a paper bitcoin wallet Why trust this site?, the well established and most trustworthy open-source engine for generating addresses using your own browser's JavaScript engine.No crypto-code is run on this web server, and no addresses are transmitted over the Internet.

BIP-38 encryption is fully supported as well.If you don't trust this service (or pseudorandom number generators in general) this wallet service lets you roll dice, shuffle cards, or supply your own "vanity keys".To be more secure, you should download this wallet generator from GitHub and run it offline, or even boot from this Ubuntu CD.Canton Becker—who started this service in 2013—is easily reached for questions, Bitcoin business consultation, or custom designs at: Tel: (+1) 505.501.8091 trust page (login required) or read this endorsement by Andreas Antonopoulos.Wallets come in 12 different languages, as well as special Christmas and "red envelope" / Chinese New Year designs.Here's a PDF template for making an envelope for giving away Bitcoin for the holidays.Tri-Fold Template This bitcoin key generator guides you to print both a front side and a back side for your paper wallet.All sensitive details on the front side (the private key and QR code) are folded up and securely taped shut so as to stay hidden.

For additional security, you can seal your wallets with the tamper-evident serialized hologram stickers available for purchase on this site—though any sufficiently opaque (light-blocking) tape will work fine.Tamper Resistant One risk with a paper wallet is that someone with physical access to your wallet may "sneak a peek" at the private key and withdraw your funds without your knowledge.This wallet's folding design and obfuscating security patterns resist "candling" -- the process of shining a bright light through the paper to reveal what's printed inside.Serialized hologram stickers guard against stickers being removed and simply replaced with new ones.Perfect for Giving Want to give bitcoins to someone who isn't tech-savvy?Need to send bitcoins by mail?Use a pre-loaded paper wallet.The sealed-shut folded design helps to ensure that the recipient won't accidentally reveal the private key.For recipients unfamiliar with bitcoin, the reverse side of the wallet has printed instructions for checking the wallet balance and withdrawing funds.