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 __   _    _    _               ______    _____   
| || | || | || | ||   ____     /_   _//  /  ___|| 
| '--' || | || | ||  |    \\    -| ||-  | // __   
| .--. || | \\_/ ||  | [] ||    _| ||_  | \\_\ || 
|_|| |_||  \____//   |  __//   /_____//  \____//  
`-`  `-`    `---`    |_|`-`    `-----`    `---`   
                     `-`

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發送短信 : Optimal fee structure for efficient lightning networks