Sic Bo Ethereum Dice Gambling
Keywords：Blockchain, Ethereum, Smart Contract, Gambling
Summary
Sic Bo is a gambling game based on dice rolling. All the gamblers bet with the dealers. Sic Bo is a game in which the bankers always have the upper hand. Because the gamblers can never increase their chances to win by using any technical methods, in the long run, the dealers wins. Relative to the dealers’ long-term interests, the gamblers’ ten-time, even hundred-time, rewards gained by only one bet are rather attractive as well.
Different from the traditional gambling game where the casino plays dealer, Sic Bo uses the smart contract by Ethereum, which is a set of commitment in digital form. Player of Sic Bo can choose freely to be gamblers or dealers, or both at the same time.
Sic Bo betting contracts are fully open-source and viewable on the blockchain. All data is public, and viewable at Etherscan.io. Smart contracts for Ether bets are fully automated and fair.
Bet Options
| Options | Description | Odds | Chance | Dealer Edge |
|---|---|---|---|---|
| Big | The total score will be from 11 to 17 (inclusive) with the exception of a triple | 1 wins 1 | 48.61% | 2.78% |
| Small | The total score will be from 4 to 10 (inclusive) with the exception of a triple | 1 wins 1 | 48.61% | 2.78% |
| Odd | The total score will be an odd number with the exception of a triple | 1 wins 1 | 48.61% | 2.78% |
| Even | The total score will be an even number with the exception of a triple | 1 wins 1 | 48.61% | 2.78% |
| Any Triple | Any of the triples will appear | 1 wins 30 | 2.78% | 13.89% |
| Specific Triples | A specific number will appear on all three dice | 1 wins 180 | 0.463% | 16.2% |
| Total 4 or 17 | Three dice total 4 or 17 | 1 wins 60 | 1.4% | 15.3% |
| Total 5 or 16 | Three dice total 5 or 16 | 1 wins 30 | 2.8% | 13.9% |
| Total 6 or 15 | Three dice total 6 or 15 | 1 wins 18 | 4.6% | 12% |
| Total 7 or 14 | Three dice total 7 or 14 | 1 wins 12 | 6.9% | 9.7% |
| Total 8 or 13 | Three dice total 8 or 13 | 1 wins 8 | 9.7% | 12.5% |
| Total 9 or 12 | Three dice total 9 or 12 | 1 wins 7 | 11.6% | 7.4% |
| Total 10 or 11 | Three dice total 4 or 17 | 1 wins 6 | 12.5% | 12.5% |
| Single Dice Apper Once | The specific number 1, 2, 3, 4, 5, or 6 will appear once | 1 wins 1 | 34.72% | 7.9% |
| Single Dice Apper Twice | The specific number 1, 2, 3, 4, 5, or 6 will appear twice | 1 wins 2 | 6.94% | 7.9% |
| Single Dice Apper Thrice | The specific number 1, 2, 3, 4, 5, or 6 will appear three times | 1 wins 3 | 0.46% | 7.9% |
| Specific Doubles | A specific number will appear on at least two of the three dice | 1 wins 10 | 7.41% | 18.5% |
| Dice Combinations | Two of the dice will show a specific combination of two different numbers | 1 wins 6 | 13.9% | 2.8% |
Bet Method
Use ETH to bet directly, use Sic Bo DAPP（https://gambleth.gitlab.io） or other ways that can access smart contract to bet. Sic Bo Contract Address: 0x20f5fc3d9b49ec3aeb894a48f1d657c1ea6030b3. We recommend you use Chrome browser to install MetaMask plug-in. Then you can bet in browser directly.
Wins Payment
The program will automatically do the liquidation work after the bet is taken. For the gamblers who lose, their ETH will become dealers’ profit; for the gamblers who win, the system will reward them according to preset odds. Liquidation time varies according to the size of Ethereum block chain, from 10 to 30 seconds.
If a gambler wins, the compensation according to the contract is at most 50% of the dealer’s account balance. For example, if the dealer has 100 ETH, the gambler’s bet on any triple would rather not be higher than 1.667(100x50%x3.33%) ETH, for he would not get more even if he take more bet.
Dealer Edge
The dealers have different kind of advantages according to gamblers’ different bets. Take “triple” as an example. The odds are 1:30. The dealer has 13.89% edge. In other words, the expectation of gambler on each triple bet is -0.1389. The gambler loses 0.1389 on each 1 ETH bet. The expectation of dealer on each triple bet is 0.1389. The dealer gains 0.1389 on each 1 ETH bet.
The dealer’s edge is the dealer’s extra gain and the gain will increase as the number of gamblers increases.
Dealer Rights
Although the expectation is above zero, the odds are high. The dealer must be wealthier than the gambler. Individual dealer may be weak in power, so Sic Bo has contract for dealer’s rights.
Dealer’s right is to distribute one dealer’s right to all the players who have the certificate of dealer’s rights. These players take turns to be dealer. In specific form, it is the DRS token players hold.Dealer’s rights varies between circulating rights and hold right.
Hold Rights
The rights by contract is hold rights. Hold rights is only for distribution and will not take part in dividend calculation when the dealer redeems his rights and interests.
Circulating Rights
The rights, which is not by contract, is circulating rights. Circulating rights can be traded for ETH at any time. Circulating rights circulate among players.
The upper limit for dealer’s rights is 21 million. It will not increase.
DRS Unit Price
Unit price for dealer’s right is ETH and the price fluctuates. The fluctuation is not caused by buying and selling dealer’s right, for doing so will not cause price change. Gamblers take part in the game, which results in profit, causing the price for dealer’s right to change. In the long run, the money invested will get a profit at least 2.78%, because the dealer’s edge is 2.78%.
Of course, the profit might decrease, because the gamblers get lucky. You can try your luck by investing in DRS and roll the dice once or twice. The formula for calculating the dealer’s right is as below:
e is the ETH investors invest. d is the DRS investors hold. You can see from the formula, when profit=0, the price is constant.
Invest DRS
Anyone can invest in the dealer’s rights and gain dividend according to the amount of deal’s rights he holds. When all the hold rights are distributed, you can gain your holding of DRS by buying from the trading market, finding a trustworthy seller or through the exchange office. DRS is a token under Ethereum ER20 standard. The address for DRS token is: 0xdf5f29a28119714a00d7bf0e25f8af8dcb9a9d51.
Player can trade for dealer’s right on Sic Bo Dapp, or transfer ETH into the contract and the contract will distribute DRS accordingly. Dealers can trade their DRS for ETH at any time. When you trade for ETH, the contract will deduct some DRS. The contract will ask for permission to deduct a small amount of DRS, just as credit card will ask for merchant’s permission. DRS is private property and its transfer needs permission. The fee for transferring DRS into ETH is 0.5%.