The contract is live on Ropsten Testnet. And the first version of Web Miner is out. Enjoy!

Ropsten Testnet Web Miner: https://endur.io/miner. You need:
+ A Private Key (don't use keys with any valuable coin/token)
+ Some test coins: BTC-TEST and Ropsten ETH. (You can search for their public faucets and get them for free)
+ 3rd party API keys: Infura, BlockCypher, Tatum.io. (You can register and get them for free, they're all well-known crypto API services)