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Yes it is open for anyone and people from other countries can use bitcoin or other cryptocurrencies as payment option.

Cryptocurrency will be converted to Steem and profit sharing will be done on that Steem value.

If you have any further questions, feel free to ask and I will try to clear confusion if any.

Coin Marketplace

STEEM 0.17
TRX 0.15
JST 0.029
BTC 60773.82
ETH 2378.63
USDT 1.00
SBD 2.57