So coin owner do not have the right to mIaontain the blockchain but ll work is done by the development team? How can I ensure there is no double spend?
By harnessing the proof of stake method, all transactions will continue to be secure and risk free.
For more information read about it here:
https://en.bitcoin.it/wiki/Proof_of_Stakedid messi gave you the permission to launch the coin in his name.
No he did not. Neither did Kanye West for Coinye nor Suarez for Suarez coin.