Mining Contract Size Increase September 24, 2014
We will be adding additional hashing capacity to TH1, increasing it to a total of 400 THS (terahashes per second) in an effort provide greater liquidity and enhance price discovery in both the exchange and swaps market. The additional capacity will be added immediately after the next block after #322327 is mined.
Mining Contract Size Increase September 23, 2014
We will be adding additional hashing capacity to TH1, increasing it to a total of 300 THS (terahashes per second) in an effort provide greater liquidity and enhance price discovery in both the exchange and swaps market. The additional capacity will be added immediately after the next block after #321969 is mined.
Mining Contract Size Increase September 16, 2014
We will be adding additional hashing capacity to TH1, increasing it to a total of 200 THS (terahashes per second) in an effort provide greater liquidity and enhance price discovery in both the exchange and swaps market. The additional capacity will be added immediately after the next block is mined.
Introducing mining contracts September 15, 2014

We are pleased to offer mining contracts as trading product on the Bitfinex platform. We have worked for some time to develop what we believe is a superior approach to “cloud mining” that is smartly packaged to offer simplicity and transparency. While we are very excited about this offering, please note that we consider this a “live beta” as we continue to tweak the product to meet the need of our traders. Because it is a beta phase product, the first “tranche” is purposely small and short-dated. As we gain experience in administering this product, assess demand, and incorporate feedback from our traders, we will introduced larger and longer dated tranches. The contract specifications follow:

  • Trading Pair: TH1BTC
  • Tranche Size: 100 THS (terahashes per second)
  • Expiration: 3 Months
  • Pool: TH1 is part of a larger pool (~3,500 THS total). Statistics regarding this pool will be posted regularly along with blockchain transaction id’s will be posted and frequently updated.
  • Pool Fee: 3%
  • Hosting: All hosting, power and maintenance cost for the duration of the contract is included in the price per TH.
  • Margin: TH1 can be borrowed and sold short. We will start out with a 25% Initial Margin Requirement, but we see that going as low as 12.5% in the near future.
  • Dividends: The blockchain time stamp on block rewards will be used to determine “holders of record” at the time that the block was mined. Positions will be aggregated between balances in the Exchange Wallet and trading position in the trading wallet to determine a “net position”. Dividends will be computed as the pro rata share of the block reward less the pool fee. Longs will get paid dividends in their default wallet. Shorts will pay dividends from the Trading Wallet only. Longs who provide TH1 swap liquidity will still receive dividends.

The product is designed as a “depleting asset”, whose value will continue to go down all the way to zero at expiration. Coupled with the fact that all hosting and maintenance is already included, we expect fair value analysis to be much easier for the average trader and cloud miner. TH1 will also be the first shortable mining contract (that we are aware of) further enhancing efficient price discovery. Trading will commence at 9 AM EDT on Monday September 15, 2014. We welcome your feedback and, as always, we thank you for your business and continued support.

Margin System Updates and Enhancements August 12, 2014

In our ongoing effort to deliver the very best in crytocurrency trading, Bitfinex is pleased to announce several changes and enhancements to our margin system that will pave the way for better risk management, product-based margin requirements, and future trading products. We have also decided to streamline some of the associated margin features, updating and harmonizing margin terminology

  1. We have decided to eliminate the “Choose your leverage” feature, i.e., 1:1, 2:1 & 2.5:1. Instead of this, we are implementing a “per-pair” leverage allowance. This will allow us to tailor the exposure based on the assets volatility. Virtually all users maximize this value, and since it is self-selected anyway, we have chosen to simplify our product by eliminating it.
  2. We are also changing the way that we calculate “Tradeable Balance”. Currently, we do not consider the nature of a traders collateral when trading swaps, but that has lead to a loophole that allows a trader to effectively achieve 3.5:1 leverage by using BTC as collateral for a long BTC swap (most common example). While we are not particularly concerned about the effective leverage per se (see #3 below), we do, nonetheless want to harmonize risk management by considering any other collateral besides the one indicated by the pair (USD in the case of BTCUSD) as part of the allowing leverage for that position.
  3. While we understand that #2 may impact some traders used to the “extra” leverage, we are counteracting its effects by increasing initial allowable leverage to 3.33:1. We are making this change in the context of making the following changes the margin terminology and parameters.
    1. We will be changing any mention of “Leverage” to “Initial Margin” and representing it as a percentage instead of a ratio, which means that leverage of 2.5:1 would be represented as 40%. The new leverage of 3.33:1 will be shown as an Initial Margin of 30%.
    2. Maintenance Margin will be increased slightly to 15% and will be fixed to be always be half of the Initial Margin for any giving swaps product.
    3. These changes will allow us to easily adjust the margin parameters for a given swap pair to reflect marketplace realities as well as give us the ability to introduce future products that, for example, may be substantially less volatile, requiring less margin to trade. For the time being, 30%/15% margin parameters will be the same for all swap products.

The net effect of trader behavior and existing positions will be negligible and we look forward to delivering on the possibilities and new opportunities created by these changes. These changes will go into effect on Monday, August 18, 2014 at 00:00 UTC.

Thank you for choosing Bitfinex. We take the trust you place in us seriously, and are always striving to provide the fairest, and most cutting-edge platform in order to enable our customers trading needs.

Upcoming changes in our margin trading feature July 12, 2014

In an ongoing effort to provide our customers with the best possible trading experience, we are pleased to announce several enhancements to our swaps system. As the swaps market continues to grow, we continue to be extremely focused on ensuring that it operates as fairly and efficiently as possible, while mitigating systematic risks to the greatest extent possible.

Self Funding: To the extent that a trading wallet’s collateral is the correct currency, it will now be automatically used to offset the position’s swap requirements. For example, if a trading wallet contains USD, and the position is long BTCUSD, the USD borrowing requirement will be reduced by the amount of USD collateral. We believe that this change will result in significant cost savings to traders and help make the closely watched aggregate swap statistics more meaningful. This new feature essentially allows traders to pay no swap interest when the positions size is less than their collateral, i.e., “unlevered” (provided, of course that the collateral is held in the correct currency), and avoids the clumsy process of claiming unlevered position as this feature effectively enables traders to perform the economic equivalent of a “partial claim” when the position is reduced in size of more of the correct collateral is deposited in the trading wallet.

Daily Settlement: Up until now, swap interest to liquidity providers has always been paid daily, but swap interest from traders is only collected when the positions is closed. While this makes sense from a certain perspective, it has the unintended consequence of effectively putting Bitfinex in the position of making 0% loans to cover the payments imbalance created by large “unrealized swap” balances, which really should be serviced by the P2P facility that we already have in place. Moreover, from a balance sheet perspective, we feel that it simply makes more sense to match the frequency of the collection and payment process. In order to implement this change, traders will need to select how they wish these daily payment to be made. The system will support a new variable for each position, “Swap Type”, which can have one of two values:

  • Daily (default): Swap interest will be automatically deducted from the collateral in trading wallet of a daily basis. If the correct currency is not present, an appropriate conversion will be performed to satisfy the payment.
  • Term: Swap interest will be capitalized in to position every night by automatically accessing swap offers to cover the required payment.

Existing positions will be phased into this process, with daily “catch-up” payments of no more than 10,000 USD.

These first changes will be active on the 21st of July, 2014.

Real-time Autorenew: In the past, the “autorenew” feature for offering swap liquidity was only processed once every 15 minutes, which could sometimes create an offer “vacuum” if large positions were being opened and closed quickly during periods of heightened volatility. We have reduced that interval to less than one minute as we approach a true real-time solution to this important feature.

Swap “Bot”: We will soon be offering traders the ability to automatically replace the swaps that fund their positions with cheaper ones should they be available at the same or better terms, eliminating the rather laborious manual process that is available today. There are many nuances to making this work efficiently and it will be offered on an “opt in” basis, but we anticipate that this feature will make the swap market much more efficient and reduce volatility in the average swap rates. We will provide further updates on the specific functionality by the end of July.

Once again, we wish to thank all of our customers for their continued loyalty, which, in recent months, has made Bitfinex the number one platform for BTCUSD liquidity as measure by trailing 30 day volume. We look forward to serving the community’s ongoing trading needs as we continue to update and improve our trading platform. As always, we welcome your feedback.

New fee schedule for LTC and DRK pairs June 05, 2014

In order to further increase the quality of your trading experience we decided the following

Fees on the LTC/USD, LTC/BTC and DRK/BTC DRK/USD pairs will be taken to 0.1% for market takers and to 0% for market makers. Adding liquidity to our orderbook will then originate trades free of charge. This plan will be kept in place until further notice

We hope you will appreciate this and we wish you a great trading day

DRKUSD and DRKBTC pairs added on Bitfinex June 02, 2014

We are pleased to announce that Darkcoin will be available to trade on the Bitfinex platform starting at 6PM CET. It is rare for us to add new trading products, but we believe that the advent of privacy-centric cryptocurrencies warrants our attention. Specifically, we believe that Darkcoin and the team behind it represent the most credible foray into this important frontier, and now that Darkcoin's market capitalization has reached non-trivial levels, we have decided to offer it as a trading option to our customers. As one might expect, will support trading in DRK/BTC, but, in addition, we will the first exchange to support trading in DRK/USD.

While we have no crystal balls at Bitfinex, we do nonetheless believe that the new features that Darkcoin aims to implement represents a substantial development in the cryptocurrency space, and we believe that any innovation that enhances privacy deserves our attention. Naturally, we do not condone the use of Darkcoin for illicit purposes, but we do believe in the right to privacy.

Initially, we will only offer cash exchange transactions. In time, as our order book deepens and Darkcoin successfully navigates certain milestones, we will also possibly allow swap leverage and shorting, should Darkcoin's risk profile and volatility merit it.

Darkcoins can't also be used as collateral for margin transactions.

We hope that you that you find these new trading products to be of value to you and we, of course, always welcome your feedback.

New deposit bank May 08, 2014

Please note that the deposit bank has changed. All verified customers can find the new bank details on the deposit page.

Wires sent to our previous bank accounts starting from tomorrow may be returned

Limitation of decimals of orders May 02, 2014

To prevent orders spam, the price of new orders will be limited to 5 significant digits. All prices with more than 5 significant digits will be rounded to the closest 5 digits value.

For example, an order at 455.123456 USD/BTC will be rounded to 455.12 USD/BTC.

This change will be in effect the 7th of May, 2014 at 00:00 GMT

Please note that all open orders at this time will be rounded down to the next 5th significant digits for bids, and rounded up to the next significant digits for asks at this time

Thank you for your understanding

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