id
: id of bookx
: parsed number from hash of image file
LTN_URL=https://raw.githubusercontent.com/syrflover/ltn/master/src/main.ts
deno run --allow-net $LTN_URL <id> <x>
// deno run --allow-net $LTN_URL 2277336 2828
{
"m": 1, // using caculate subdomain of image url
"b": "1681956001", // path segment of image url
}