WeiFlip
An Ethereum coin flip contract
An Ethereum coin flip contract
This contract is intended to be used by other contracts and not necesariliy by end users. Using WeiFlip is made up of 2 contract calls made in sequence.
The coin flip is perfomed by providing the contract with a random value and a blockNumber which must be at least n (default: 7) blocks in the future.
If sending value with your coin flip you must also pass in a heads_address and a tails_address to which all value will be sent depending on the outcome of the flip.
After n blocks anyone can call the reveal method with flipId (returned from previous call and stored in the contract) to have the outcome (and relevent value) sent to the appropriate address.
Prime:
WeiFlip.prime( uint random, uint blockNumber, address heads, address tails )
Returns a flipId for use in the next call, or 0 if error.
Reveal:
WeiFlip.reveal( uint flipId )
Returns 1 or 2, for heads or tails, or 0 if error.
Source: w2f3.sol
ABI: w2f3.json