So far Pi Network, Timestope, Bee Network and Eagle Network are the top 4 mining networks in 2021 which are completely free to mine. Only five seconds a day on your smartphone and no investment needed, you have a chance to receive a huge amount of money as in the future these will be worth thousands. You need a invitation code to join at start. This is how many made millions through Bitcoin for free when it started! Just download the Apps from Google Store or Play Store from your mobile phone and use the below codes :-) For Pi Network use invitation code: sbegum43 Use my Pi Network Code and you will receive 1 Free Pi Coin when you use code: Sbegum43 For Timestope use witness code: sbegum43 Use my Timestope code and you get 10% bonus when you use witness code: sbegum43 For BEE Network use the invitation code: sbegum43 Use my BEE Network code you get 1 free BEE Coin plus 25% more when you use invitation code: sbegum43 For Eagle Network use the invitation code: sbegum43 You get 10 free Eagle Coins plus 25% more when you use invitation code: sbegum43 I'm always mining and active. Happy Mining :-)