Bithereum is a fork of Bitcoin in combination with Ethereum's technological roadmap, structured around a Casper-like Proof of Stake consensus model. Bithereum represent's two chains in one coin; by hard-forking Bitcoin, and hard-spooningShow more [+] Ethereum to reward ETH holders with BTH, Bithereum is the first hard-spork of its kind.
Prior to shifting to Proof of Stake, Bithereum begins as a Proof of Work coin with an Equihash 144,5 algorithm to prevent ASIC's from dominating the mining efforts.
Around 3% is for the devs. There is an additional allocation 7% of the supply for the project itself. 2,730,450 BTH were also included in the fork block to reward ETH holders at a ratio of 38 ETH to 1 BTH.