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BitcoinX. It's a fork of Bitcoin that moves it from the POW mining chain to the DPOS Graphene chain. So BitcoinX works just like Steem or Bitshares, 3s transfers, 10,000-100,000 transactions per second, send bitcoin to accounts instead of hash addresses etc. BTCX basically fixes everything that is wrong with BTC all at once, no more forking/miner/developer drama. All the scaling is done, fast tx are done.

had been looking for more information about BTCX but couldn´t find, do you have a link or somewhere we can review?

You can read this and @stan did another post about it too https://steemit.com/bitcoin/@stan/doc-brown-s-multiple-bitcoins-theory

great! thanks!!