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Please click the ROLL button to WIN UP TO $200 IN FREE BITCOINS EVERY HOUR!
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SEEDS FOR YOUR NEXT ROLL
| Server Seed Hash (SHA-256) | |
| Client Seed | |
| Nonce | 23933 |
PREVIOUS ROLL DETAILS
You haven't rolled yet since reloading the page. Your roll history for the last 10 days is available below.
CLICK HERE TO VERIFY YOUR ROLLS
This game is provably fair. What that means is that there is no way the site can cheat you by picking a number that is in our favour.
The way this works is that each roll is calculated using 3 parameters - the server seed, client seed and nonce. Out of these, we show you the client seed and nonce that will be used for your next roll along with a SHA256 hash of the server seed. You can also change the client seed if you wish. The server seed is the only part that is kept a secret until after the roll.
Then after you roll, under the section titled PREVIOUS ROLL DETAILS, we show you the server seed that was used and you can verify that this was the same server seed that we said we were going to use before the roll by checking if the SHA256 hash of this seed matches the SHA256 hash that we showed you before the roll.To know exactly how we calculate the rolls, read the section below titled How are rolls calculated?
After you roll, you can also click the link above named CLICK HERE TO VERIFY YOUR ROLLS to verify your roll using our javascript based roll verifier which uses the same seeds to re-calculate the roll right in your browser without any external communication.
How are rolls calculated?
- Two strings are created :
STRING1 = "[NONCE]:[SERVER SEED]:[NONCE]"
STRING2 = "[NONCE]:[CLIENT SEED]:[NONCE]" - Then HMAC-SHA512 is used to hash STRING1 with STRING2 as the secret key, giving us a 128 character hex string.
- The first 8 characters of the hex string are taken and converted to a decimal.
- This decimal is then divided by 429496.7295 and rounded off to the nearest whole number.
- This whole number is used as your roll, with the maximum possible value being 10,000.
ADVANCED TRACKING USING TAGS
You can track the visits and signups that you are getting from multiple traffic sources by adding the tag parameter (&tag) to your referral URL.
For example, to track the visits and signups from Source 1, add &tag=source1 to your referral URL and then promote that URL (http://freebitco.in/?r=16830360&tag=source1) and you will be able to see the signups and visits from that source by selecting source1 in the dropdown menu below.
You can create as many tags as you want on the fly and they can be a string of upto 150 characters comprising of small and large case letters and numbers, excluding the number 0.
Tag statistics are updated hourly.
Why does the amount of Bitcoins that you can win, keep changing?
The amount of bitcoins that you can win with FREE BTC depends on the current bitcoin price and the biggest prize is fixed at US$200 and the other prizes in proportion to it. So, when the price of a bitcoin goes down, the reward amount calculated in bitcoins goes up and the other way round is also true. So, regardless of the current bitcoin price, you have a fair chance of winning US$200 in bitcoins on each roll.
×WITHDRAW BITCOINS
PLEASE SELECT A WITHDRAWAL OPTION
DEPOSIT BITCOINS
You can send bitcoins to your personal deposit address and they will be credited to your FreeBitco.in account after 1 network confirmation. We have no minimum deposit amount, we accept and credit all deposits to your account.
Please double-check that the address you have copied is correct before sending bitcoins from your wallet since there are some malware that can change the deposit address after you copy it, resulting in coins being sent to some other address and not your deposit address.
Your previously generated bitcoin addresses are listed below. Any deposits sent to these addresses will also be credited to your FreeBitco.in account after 1 confirmation.
KEYBOARD SHORTCUTS
Click inside the bet amount box and then use the following keyboard shortcuts to play the MULTIPLY BTC game.
| KEY | FUNCTION |
| H | Bet HI |
| L | Bet LO |
| A | Halve bet amount |
| S | Double bet amount |
| D | Min bet amount |
| F | Max bet amount |
| Q | Increase odds by 1 |
| W | Decrease odds by 1 |
| E | Increase odds by 5 |
| R | Decrease odds by 5 |
| T | Increase odds by 10 |
| Y | Decrease odds by 10 |
Did you know?
You can multiply your bitcoins up to 4,750 times and win free lottery tickets and reward points by playing our provably fair HI-LO game!
DID
YOU
KNOW?
YOU CAN MULTIPLY YOUR BITCOINS
Upto 4,750X
FREE REWARD POINTS ON EVERY ROLL
Redeem for iPhone X & more
FREE LOTTERY TICKETS ON EVERY ROLL
Win upto $2,000 from free Lottery tickets
WIN $30,000 IN CONTEST
Participate in monthly Wagering & Referral contest
DID
YOU
KNOW?
YOU CAN MULTIPLY YOUR BITCOINS
Upto 4,750X
FREE REWARD POINTS ON EVERY ROLL
Redeem for iPhone X & more
FREE LOTTERY TICKETS ON EVERY ROLL
Win upto $2,000 from free Lottery tickets
WIN $30,000 IN CONTEST
Participate in monthly Wagering & Referral contest
DID
YOU
KNOW?
YOU CAN MULTIPLY YOUR BITCOINS
Upto 4,750X
FREE REWARD POINTS ON EVERY ROLL
Redeem for iPhone X & more
FREE LOTTERY TICKETS ON EVERY ROLL
Win upto $2,000 from free Lottery tickets
WIN $30,000 IN CONTEST
Participate in monthly Wagering & Referral contest
We do not endorse the product, service, or company, nor any of the claims made by banner ads in this website. Please do your own due dilligence before purchasing any of the products or services advertised here. The products or websites advertised here may be unsafe, untrustworthy, or illegal in your jurisdiction.
×EXCLUSIVE FLASH OFFER JUST FOR YOU
Congratulations! You have qualified for an exclusive offer only valid until the timer ends!
For a LIMITED PERIOD until the timer ends, you can WAGER ON MULTIPLY BTC or BET ON EVENTS and earn benefits designed exclusively for you.
OFFER ENDS IN
Take a look at the REWARD TIERS you can achieve, below.
TIER 1
WAGER 50,000 SATOSHI (0.0005 BTC)
BENEFITS
25
REWARD POINTS25
LOTTERY TICKETS1
GOLDEN TICKETTIER 2
WAGER 500,000 SATOSHI (0.005 BTC)
BENEFITS
ALL
TIER 1 BENEFITS250
REWARD POINTS250
LOTTERY TICKETS10
WOF FREE SPINS10
GOLDEN TICKETSTIER 3
WAGER 5,000,000 SATOSHI (0.05 BTC)
BENEFITS
ALL
TIER 1 + TIER 2 BENEFITS2,500
REWARD POINTS2,500
LOTTERY TICKETS100
WOF FREE SPINS100
GOLDEN TICKETS100
FUN TOKENSThese benefits are in addition to any other regular benefits that you get for wagering. All benefits that you are eligible for will be credited to your account when the timer ends and you shall receive an email notifying you.
CLAIM BONUS
You are eligible to claim a bonus of 0.00051501 BTC from us for playing the MULTIPLY BTC game! Please read the terms of the bonus below before claiming.
BONUS TERMS
The MULTIPLY BTC bonus works in the following manner:
- When you claim a bonus, an equivalent amount is deducted from your account balance and the amount+bonus is transferred to a bonus account. For example, if you claim a bonus of 0.001 BTC, an additional 0.001 BTC will be deducted from your account balance and your bonus account will have a balance of 0.002 BTC.
- The balance in your bonus account needs to be wagered 25 times in the MULTIPLY BTC game before it is credited to your main balance. In the above example, you need to wager 0.05 (0.002* 25 ) BTC before the balance in your bonus account is transferred to your main account.
- The maximum wagering requirements that you can fulfill in a single bet cannot exceed 10% of the original amount of your bonus account. Following the example above, if you make a bet of less than or equal to 0.0002, the full amount will be counted towards your wagering requirements but for bets over 0.0002, only a maximum of 0.0002 will be counted towards your wagering requirements. However, 100% of all jackpot bets will be counted towards fulfilling your wagering requirements.
- If you have any balance in your bonus account, it will be used first for all wagers that you make and the winnings will be added to your bonus account. If you make a wager larger than the amount in your bonus account, the wager will be taken first from your bonus account (until it is 0) and the remaining will be taken from your main account and the winnings will be added to your bonus account.
- When you complete the wagering requirements for a bonus, the full balance of your bonus account will automatically be added to your main account (within a few minutes) and can be withdrawn to your wallet immediately.
- Any amount spent on playing for the jackpot will also count towards fulfilling your bonus wager requirements.
- You can only have 1 bonus active at any time.
- Active bonuses do not have any expiry date and will last forever until the wagering requirements are met.
- Once claimed, a bonus cannot be cancelled until the wagering requirements have been fulfilled.
BONUS TERMS
The MULTIPLY BTC bonus works in the following manner:
- When you claim a bonus, an equivalent amount is deducted from your account balance and the amount+bonus is transferred to a bonus account. For example, if you claim a bonus of 0.001 BTC, an additional 0.001 BTC will be deducted from your account balance and your bonus account will have a balance of 0.002 BTC.
- The balance in your bonus account needs to be wagered 25 times in the MULTIPLY BTC game before it is credited to your main balance. In the above example, you need to wager 0.05 (0.002*25) BTC before the balance in your bonus account is transferred to your main account.
- The maximum wagering requirement that you can fulfill in a single bet cannot exceed 10% of the original amount of your bonus account. Following the example above, if you make a bet of less than or equal to 0.0002, the full amount will be counted towards your wagering requirements but for bets over 0.0002, only a maximum of 0.0002 will be counted towards your wagering requirements. However, 100% of all jackpot bets will be counted towards fulfilling your wagering requirements.
- If you have any balance in your bonus account, it will be used first for all wagers that you make and the winnings will be added to your bonus account. If you make a wager larger than the amount in your bonus account, the wager will be taken first from your bonus account (until it is 0) and the remaining will be taken from your main account and the winnings will be added to your bonus account.
- When you complete the wagering requirements for a bonus, the full balance of your bonus account will automatically be added to your main account (within a few minutes) and can be withdrawn to your wallet immediately.
- Any amount spent on playing for the jackpot will also count towards fulfilling your bonus wager requirements.
- You can only have 1 bonus active at any time.
- Active bonuses do not have any expiry date and will last forever until the wagering requirements are met.
- Once claimed, a bonus cannot be cancelled until the wagering requirements have been fulfilled.
Make an extra $5!
Want to earn an extra $5? - Simply post the message below at http://bitcointalk.org, with a screenshot of your win and we shall credit an extra $5 worth of bitcoin into your account within 48 hours!
Message to post:
When you post, do not forget to include a screenshot of your win. If you do not post a screenshot, you will not get the $5 reward!
Please upload your screenshot to imgur.com and include the image link in your post.
×Are you experiencing long confirmation times for your bitcoin transactions?
Is your current bitcoin wallet paying insufficient network fees as a result of which you have to wait hours or days for your bitcoins to be credited?
Did you know that you can use your FreeBitco.in account directly as a bitcoin wallet? Just click the DEPOSIT button and generate a bitcoin address and use that address to receive bitcoins from anywhere. When you wish to transfer bitcoins out or make a payment, just use the WITHDRAW button to send bitcoins to any address.
By using us as your bitcoin wallet, you will ensure that your bitcoin payments have fast confirmation times since we monitor the bitcoin network 24/7 to ensure that your transactions are always sent with an appropriate fee for fast confirmations. We also provide a "SLOW" withdrawal option with very low transaction fees for non-priority withdrawals.
Also, as an additional bonus, we pay you daily interest on any balance that you hold in your FreeBitco.in account, which no other wallet does!
×PROVABLY FAIR LOTTERY
This lottery is provably fair. What that means is that there is no way the site can cheat you by picking a lottery winner who we favour. All winners are picked randomly and the method for picking the winners is described below.
- At the beginning of each round, we generate a server seed for that round and show you the SHA256 hash of this seed.
- When a lottery round has concluded, we make a list of all user id's and their lottery tickets and sort it in ascending order of the user id's.
- We then use this list to assign ticket numbers for all tickets. For example if user id 1 has 10 tickets and user id 2 has 20 tickets, then user id 1 will have ticket numbers 0 to 9 and user id 2 will have ticket numbers from 10 to 29. This is done for all users.
- Then the list containing the user id's, tickets held by each user and their ticket numbers is published in a text file. This file also contains the total number of tickets issued in the round and the server seed for that round.
- A MD5 hash of this text file is calculated.
- Then the current bitcoin block number is recorded and a block number that is 12 blocks into the future is decided on. The block hash of this future block is used as a "client seed" ie. a seed that we are not aware of when the list in step 4 has been published.
- Then a tweet is made via our twitter account (https://twitter.com/freebitco) containing the link to the file generated in step 4, the MD5 hash of the file and the future bitcoin block number as determined in step 6. Since tweets cannot be edited, only deleted, this will provide a timestamp for when the list in step 4 was made, which can be compared to check that the bitcoin block determined in step 6 is in the future ie. we do not know the block hash of this block when the list is generated.
- The winning ticket numbers will be calculated as described below:
- A string (STRING1) is created - "[SERVER SEED]:[BLOCK HASH]:[WINNING POSITION]".
- The SHA256 hash of STRING1 is calculated and the first 8 characters of this hash are taken (STRING2).
- STRING2 is converted to a decimal which gives us a number between 0 and 4,294,967,295 (NUM1).
- NUM1 is then multiplied by the (total number of tickets minus 1) and divided by 4,294,967,295 to get a number (NUM2) between 0 and the total number of tickets less 1.
- NUM2 is then rounded off to the nearest whole number which is the winning ticket number.
- The [WINNING POSITION] starts at 1 and is increased by 1 for picking the 10 winners. The user having the ticket with the lowest [WINNING POSITION] wins the first prize and so on.
- If a user wins more than 1 prize, the number is discarded and [WINNING POSITION] is increased by 1 and the calculations are run again to pick a new user. This is to ensure that a user cannot win more than 1 prize in a round.
HOW IS THE SYSTEM FAIR?
The system described above that is used for picking the winners is provably fair because it has multiple safeguards in place to ensure that winners are picked randomly and fairly.
- We provide a SHA256 hash of the server seed when a lottery round starts. If we change the server seed at any time, the SHA256 hash of the new seed will not match the hash we provided earlier. After a round has ended and we provide the server seed that will be used to pick winners, the hash of the seed we provide can be checked against the hash we provided originally and both should match.
- We use a future bitcoin block hash as the "client seed" ie. a seed that we do not know of. All bitcoin block hashes are unique and nobody knows what the block hash of a future block will be until the block has been mined.
- We use twitter to publish the future bitcoin block number, the list of users and their ticket numbers and the MD5 hash of the user list. It provides a timestamp to check if the block hash that we use is indeed in the future. Since tweets cannot be edited, only deleted - if we delete the tweet after the future block has been mined and publish a new one, it would be easy to catch us cheating by comparing the timestamp of the tweet and that of the bitcoin block. The timestamp of the tweet should always be lesser than the time timestamp of the bitcoin block whose hash is used as the client seed.
- We provide a MD5 hash of the text file containing the list of users and their ticket numbers. If even a single character in the text file is changed after the MD5 hash in the tweet is published, the MD5 hash of the edited file will not match the MD5 hash provided in the tweet.
EXCHANGE BITCOIN CASH
If you had funds with us during the recent Bitcoin hard-fork, we have credited you with extra Bitcoin Cash (BCC) coins for each Bitcoin that you had with us.
You can exchange your Bitcoin Cash (BCC) that was credited to you directly into Bitcoin at a rate of 0.145 BTC/BCC. When you exchange, the extra Bitcoins will be added to your account balance and can be withdrawn instantly.
The BCC that you have received is in addition to the BTC that you had with us and is an extra amount which can be exchanged to increase your BTC holdings by 14.5% by simply clicking a button!
HARD FORK POLICY
Bitcoin has 2 hard forks planned in the near future - "Bitcoin Gold" and "Bitcoin Segwit 2x". As we have done with the "Bitcoin Cash" hard fork in the past, we shall support withdrawals of all hard fork coins as long as they are viable - ie. have wallet support, a working blockchain and straightforward redemption policies.
We shall distribute Bitcoin Gold to your accounts shortly after they release a wallet and they have a working blockchain. You can monitor their progress at https://bitcoingold.org/blog/
The Bitcoin Segwit 2x hard fork seems to have been suspended so it will have no impact. If it is revived at some point in the future, we shall distribute those coins to your account as well.
×EXCHANGE BITCOIN GOLD
If you had funds with us during the recent Bitcoin hard-fork, we have credited you with extra Bitcoin Gold (BTG) coins for each Bitcoin that you had with us.
You can exchange your Bitcoin Gold (BTG) that was credited to you directly into Bitcoin at a rate of 0.019 BTC/BTG. When you exchange, the extra Bitcoins will be added to your account balance and can be withdrawn instantly.
The BTG that you have received is in addition to the BTC that you had with us and is an extra amount which can be exchanged to increase your BTC holdings by 1.9% by simply clicking a button!
The option to withdraw your BTG will also be available in a few days.
ACCOUNT BONUS REQUIREMENTS
You can see the different requirements that you need to fulfill to unlock the following bonuses below. You can do a combination of the requirements listed below and they will all be counted towards your total requirements.
Please note that these requirements can be changed at any time and fulfilling them is not a guarantee to unlock the bonus forever. This data is updated every 15 minutes.
LOW BALANCE ALERT
YOUR BITCOIN BALANCE IS LOW
You need BTC to continue playing
Wait for
OR
Deposit Bitcoins to continue playing now
!
LOW BALANCE
ALERT
YOUR BITCOIN BALANCE IS LOW
You need BTC to continue playing
Wait for
OR
Deposit Bitcoins to continue playing now
!
LOW BALANCE
ALERT
YOUR BITCOIN BALANCE IS LOW
You need BTC to continue playing
Wait for
OR
Deposit Bitcoins to continue playing now
Allow us to send you $200 in free bitcoins every hour !
Allow us to send you $200 in free bitcoins every hour !
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