Casascius physical bitcoins

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Casascius physical bitcoinsalso called Casascius coinsare physical metal coins created by Bitcoin silver round user Casascius Mike Caldwell, Sandy, Utah, USA and sold until Nov 26, [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,and BTC increments.

They can be purchased at Casascius's website, https: 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 bitcoin silver round 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 bitcoin silver round private key back into digital Bitcoins bitcoin silver round 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 bitcoin silver round. There are 2 independent websites that track the status of all Casascius coins in circulation, based on information from bitcoin silver round block chain:. Originally, Mike Caldwell imagined placing a private key on a piece of paper bitcoin silver round a washer with a tamper-evident hologram on each side.

However, he found it was more economical to have a real coin minted with a hologram on one side than to have two different hologram designs, and so the first Casascius coins were customized brass coins ordered from a mint that makes car wash tokens. As of Nov 27,Mike Caldwell suspended sales of items that contain digital bitcoins.

The hologram and the private key is different, the metal part of the coin is the same as the first series. Current items for sale do not contain bitcoins. Coming soon from Casascius: Retrieved from " https: Navigation menu Personal tools Create account Log in. Views Read View bitcoin silver round View history. Sister projects Essays Source. This page was last edited on 20 Augustat Content is available under Creative Commons Attribution 3.

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The Bitcoin Melt Value Calculator for Silver, below, can find the total bitcoin value of silver items, measured by the weight unit of your choice. The bitcoin value is calculated based on the total amount of actual silver content, not including any other metals used if the silver has been alloyed. The silver to bitcoin calculator can only figure the intrinsic metal value of your silver items, but is not able to show any collectible value.

Use the silver priced in bitcoin calculator to figure what the silver content of an item is worth, priced in bitcoins, or to discover how much bitcoin you might be willing to pay. Select the millesimal fineness of silver from the drop-down list, or just enter a numerical value into the silver purity text box. The total bitcoin value is calculated based on the fiat currency prices for both silver and bitcoin, as shown in step 5 below.

The current prices are updated frequently during regular trading hours. Prices can be changed to values of your choice. Select the Unit of Measure Weight Type: Enter total weight of the silver item: Total Weight in Troy Ounces: Select silver purity from list or enter percent: Choose fiat currency to use as base: Silver Price per Troy Ounce in:. Resultant values will be rounded to two or more decimal places depending on length. Calculator only figures the total bitcoin value and total weight of the silver portion of your items.

You might also like to try one of these other calculators: The applications on this website require the use of JavaScript in order to function. Please enable JavaScript in your web browser, and then refresh your browser to load the applications.

Total Weight in Troy Ounces:.