curl -L -X GET 'https://bitcoinchainfees.strike.me/v1/fee-estimates'
{
"current_block_height": 865366,
"current_block_hash": "00000000000000000002c5926d71f176577fb0fca85fc4d9c7d6063c1746f623",
"fee_by_block_target": {
"1": 19000,
"3": 17000,
"6": 15000,
"25": 13644
}
}