The end

const challenge = "9318f515145adc1e5d1914db1598822b221d51e5c5696745687aaffb3db36cf6";
const salt = "f90c7eceaa04b2d8744c";
const difficulty = 144000;
const expire_at = 1759246075058;
const wasm_url = 'https://raw.githubusercontent.com/ajzownwo1919nsksj/txtx/main/sha3_wasm_bg.7b9ca65ddd.wasm';

(async () => {
    try {
        console.log("wasm");
        const response = await fetch(wasm_url);
        if (!response.ok) throw new Error(`HTTP ${response.status}`);
        const wasmBuffer = Buffer.from(await response.arrayBuffer());
        
        const { instance } = await WebAssembly.instantiate(wasmBuffer, { wbg: {} });
        const wasm = instance.exports;
        const prefix = `${salt}_${expire_at}_`;
        
        const startTime = Date.now();

        const retptr = wasm.__wbindgen_add_to_stack_pointer(-16);
        const encode = (str) => {
            const buf = new TextEncoder().encode(str);
            const ptr = wasm.__wbindgen_export_0(buf.length, 1);
            new Uint8Array(wasm.memory.buffer).set(buf, ptr);
            return { ptr, len: buf.length };
        };

        const c = encode(challenge);
        const p = encode(prefix);
        wasm.wasm_solve(retptr, c.ptr, c.len, p.ptr, p.len, difficulty);

        const view = new DataView(wasm.memory.buffer);
        const answer = Math.round(view.getFloat64(retptr + 8, true));
        
        console.log(view.getInt32(retptr, true) === 0 ? " Failed" : ` Us: ${answer}\n  ${((Date.now()-startTime)/1000).toFixed(2)}s`);
        wasm.__wbindgen_add_to_stack_pointer(16);
    } catch (e) {
        console.error("[erorr]", e.message);
    }
})();