curl -L -X GET 'https://bitcoinchainfees.strike.me/v1/fee-estimates'
{
"current_block_height": 903444,
"current_block_hash": "000000000000000000023cc808509ba948788c4e690aca5f907717bc50914023",
"fee_by_block_target": {
"1": 3151,
"3": 2252,
"5": 2008
},
"min_relay_feerate": 2000
}