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Cloud-Hashing/Mining

A type of mining where people can pay to rent computer power from someone else in the cloud to mine Bitcoin or other cryptocurrencies. This is done by selling mining…

Coin Age

The length of time since a coin has last been spent. Noting how long since a number of coins have been transacted is one indication of velocity in the Bitcoin…

Coinjoin

A technique that mixes the transactions of multiple people to obfuscate which inputs belong to which outputs.

Cold Storage

Cold storage in the context of cryptocurrency refers to keeping a reserve of your coins offline. This is often a necessary security precaution, especially dealing with large amounts of cryptocurrency.…

Cold Wallet

There are different kinds of cold wallets but I’m only going to focus on the hardware variety. A hardware wallet is a physical device that is kept offline but has…

Collateral

Collateral is something which is pledged against a loan, and can be sold to repay the loan in the event of a default on the loan payments.

Collective Mining

Mining used to be a solo pursuit, with each individual trying to solve the problem presented by block and claim the blockchain reward. With the rise of ASIC chips and…

Colored Coin

A transaction can be attributed (colored) with a special meaning, such as representing a deed. This deed can then be moved around and stored like a regular Bitcoin transaction, without…

CompactSize

Original name of a variable-length integer format used in transaction and block serialization. Also known as "Satoshi's encoding". It uses 1, 3, 5 or 9 bytes to represent any 64-bit…

Confirmation

When a transaction is included in a block by a miner, it is considered to have one confirmation. Each subsequently found block adds another confirmation. Only sufficiently confirmed transactions are…

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