A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.

Type to find tags:
× 1241
signed messages regarding the transfer or generation of bitcoins. They are broadcasted through the network and, if accepted, integrated in the blockchain.
× 951
a list of all transactions that have occurred using the Bitcoin currency. DON'T USE THIS FOR THE SERVICE NAMED 'blockchain.info'!
× 942
the command-line interface for Bitcoin. It stands for "Bitcoin Daemon" where a daemon is any computer process which runs in the background ("service" in Windows terminology). bitcoind conn…
× 913
A database containing the keypairs associated with a user's Bitcoin addresses, a list of transactions related to those addresses and various user preferences and keys.
× 863
an MIT-licenced Qt 4 GUI application for the original Bitcoin codebase. Additional/previous names include "Bitcoin-Qt", "Satoshi-Client", and "Standard Client".
× 435
a way of sharing the work needed to find a block. Miners are rewarded in proportion to the amount of computing power they contribute to the problem, with various ways of calculating r…
× 429
Security issues with the design or implementation of Bitcoin and related crypto-currencies.
× 403
The hash of an ECDSA key-pair's public component. Knowledge of this value allows a user to send Bitcoins to another person over the network.
× 395
any application which allows a user to connect to the Bitcoin (or alternate) network. Alternately, "client" may refer to a non-standard user interface which interacts with the Bitcoin netw…
× 372
Sites which allow for the conversion of Bitcoins to various world currencies as well as alternate crypto-currencies.
× 314
Application programming interface
× 312
Relating to the JSON-RPC remote procedure calls.
× 306
Related to transaction fees in the Bitcoin network.
× 301
a company that offers [tag:e-wallets], and provides a [tag:blockchain-explorer] under the domain blockchain.info.
× 290
a peer-to-peer Internet currency based on Bitcoin with confirmations that come every 2.5 minutes on average. It also uses the scrypt hashing algorithm to reduce the efficiency benefit that…
× 289
Related to creation and ongoing work for different existing and future Bitcoin-related projects and source code.
× 282
For questions relating to the protocols by which crypto-currencies are transferred.
× 253
for signing transactions.
× 249
a multi-currency payment system.
× 242
Related to Bitcoin Blocks
× 240
Collects questions about configuring and optimizing the software settings on mining rigs.
× 232
Collects questions about the economics of mining operations.
× 214
Collects questions about mining rigs, cpus, gpus, fpgas, and asicminers, as well as the production, and producers of such.
× 198
Questions about the function, the reason for, and the underlying concepts of mining.
× 195
an exchange popular in the early years of Bitcoin, where bitcoins could be traded against mora than a dozen national currencies including the US Dollar and the Euro. Insolvent in 2013.
× 194
a desktop Bitcoin client that runs on Windows, Mac and Linux.
× 194
Related to the Bitcoin network and communication between different nodes on the Internet.
× 183
a mathematically reproducible but irreversible process which takes one value as an input and predictably produces a derived value as an output. Hashing is central to Bitcoin mining as well a…
× 178
relevant to most or all blockchain based crypto-currencies. If your question is specific to one altcoin, please use/create the tag for that altcoin.
× 174
The process of bringing a Bitcoin client up to date with the blocks it is missing from the block chain.
× 172
Buying, selling or exchanging Bitcoins or other crypto-currencies for other currencies or commodities.
× 172
a set of instructions on how to complete a transaction. The default send/receive actions are scripts but the protocol can be extended through the creation of…
× 171
Collects questions about the revenue created by mining. For questions specific to coinbase transactions use [Coinbase-Transaction], for questions about halving use [reward-schedule].
× 166
The difficulty encodes the likelihood of one hash to succeed at mining a block. Indirectly, it is a measure of the total hashing power of all miners for a given crypto-currency.
× 162
refers to the rate at which two currencies are exchanged one-for-another.
× 161
the measuring unit of the processing power used to secure the Bitcoin network.