Formulae

The price formula text box allow for the price of your Bitcoins to dynamically alter as market conditions change.

The calculation process allows for a wide variety of mathematical operators typical in computing terminology (e.g. * for multiplied by and ^ for to the power of). Other available functions include:

• max - Maximum value from the parameters, e.g. max(80, mtgox_GBP_buy)
• min - Minimum value from the parameters
• average - Average (mean) value from the parameters

Figures from other Bitcoin markets can be used in the equation, and these take the form market_currency_type, e.g. mtgox_GBP_2bsr.

Special Functions

bitty_lowest(<num BTC>)

Returns the price of the lowest active seller with same offer characteristics as your offer. They must have at least <num BTC> available for sale.

Note that this is updated every time the formulae are updated (every ten seconds) so it may take a few iterations for this value to stabilise. Thus, please do not try to undercut by just a few pennies/cents.

Also note that this should never be used on its own as it will return zero if you are the only active offer. Two recommended ways of using this with other functions are:

• Matching other seller offers with a minimum price of 60 and a maximum of 80: min(max(bitty_lowest(1), 60), 80)
• Beating other seller offers by 0.50 down to a minimum price of 60 max(bitty_lowest(1) - 0.5, 60)

Foreign Exchange Rates

Use fx_USD_code, e.g. fx_USD_GBP to get the number of GBP that make one USD (usually between 0.50 and 0.80). code can be almost any three character currency code.

Markets

BitcoinAverage

• btcavg_AUD
• btcavg_BRL
• btcavg_CAD
• btcavg_CNY
• btcavg_CZK
• btcavg_EUR
• btcavg_GBP
• btcavg_ILS
• btcavg_JPY
• btcavg_NOK
• btcavg_NDZ
• btcavg_PLN
• btcavg_RUB
• btcavg_SEK
• btcavg_SGD
• btcavg_USD
• btcavg_ZAR

Types

• 24h_avg - Weighted average price in the last rolling 24 hours
• ask - Weighted average highest price that coins are bought at on the market
• bid - Weighted average lowest price that coins are sold at on the market
• last - Weighted average last price that coins are sold at on the market
• total_vo - Total volume in the last rolling 24 hours

Bitstamp

• bitstamp_USD

Types

• ask - Highest price that coins are bought at on the market
• bid - Lowest price that coins are sold at on the market
• high
• low
• last - The last price a trade was completed at
• volume

BTC-e

• btce_USD

Types

• buy - Highest price that coins are bought at on the market
• sell - Lowest price that coins are sold at on the market
• high
• low
• last - The last price a trade was completed at
• avg
• vol
• vol_cur

CoinDesk BPI

• coindesk_USD
• coindesk_EUR
• coindesk_GBP

Types

• bpi - The Blended Price Index current price

Cryptsy

Cryptsy is a virtual currency to virtual currency exchange only. All currencies supported by Cryptsy that are based against BTC are available, and all prices are the last traded prices. It is recommended to use this as a multiplier against the BTC price on another market.

Types

• BTC - Last traded price against BTC

Examples

• cryptsy_LTC_BTC which is approximately 0.03 at the time of writing.
• btcavg_GBP_bid * cryptsy_LTC_BTC which is the average GBP price to sell one Bitcoin multiplied by the amount of Bitcoins that 1 Litecoin buys.

Feathercoin

• feathercoin_AUD
• feathercoin_EUR
• feathercoin_GBP
• feathercoin_NZD
• feathercoin_USD

Types

• price - The current price

MtGox

• mtgox_GBP
• mtgox_EUR
• mtgox_USD

Types

• sell - Lowest price that coins are sold at on the market
• buy - Highest price that coins are bought at on the market
• 2bbn - The price of buying 2 BTC
• 2bbr - The price of buying 2 BTC including typical fees
• 2bsn - The price you can sell 2 BTC at
• 2bsr - The price you can sell 2 BTC at including typical fees
• last - The last price a trade was completed at