diff --git a/docs/虎牙hyCred签发-侦察笔记.md b/docs/虎牙hyCred签发-侦察笔记.md
index 8a529a5..85d3ddc 100644
--- a/docs/虎牙hyCred签发-侦察笔记.md
+++ b/docs/虎牙hyCred签发-侦察笔记.md
@@ -544,3 +544,41 @@ WUP 帧 {hdid, fingerprint, device_id, safedeviceid} 建设备池, 账号轮换
 **附带发现**: df/collect 响应含 40hex hdid 字段(与 sdid 同返), 已让
 `core/huya/device_fingerprint.get_huya_sdid` 一并返回 (runner.js 输出
 `__HDID__` 行); 它与 WUP 的 32hex hdid 非同一体系, 不能互用。
+
+### 追问2: 注册上报接口到底在哪? (2026-08-26 实测闭环)
+
+用户疑问: "真机可以(注册设备), 为啥代码不能根据逻辑生成上报注册? 肯定是少了
+什么注册上报接口吧" —— **接口一直存在且已能纯 Python 直连, 之前只是没实现**:
+
+**注册链 (servant=huyaudbwebui, 全部 POST wsapi.huya.com, TAF/WUP 信封, 无登录门槛)**:
+```
+getDfpConfig  (67B 请求)  -> 响应 80B 配置 (前64+后16, 疑似 AES key/IV 材料)
+selectOperator(419B 请求) -> 响应运营商索引 1 (请求含 40hex 设备指纹上报)
+dfpReport     (3988B 请求) -> 响应下发设备身份三件套:
+    t1 = 865a4924a40897ac1fcfe6b4c2cbb045  32hex  设备指纹(稳定)
+    t2 = PQwemAN9... 180B base64          = 登录帧 safedeviceid (每次新签发)
+    t5 = 7c5387e0539c023c31c4ff0e807e7256117385ee  40hex = 登录帧 device_id
+```
+
+**实测结论 (全部纯 Python 直连验证)**:
+1. 三接口重放均 HTTP 200, 响应与真机 HAR 一致。
+2. **dfpReport 响应 t5 == 登录帧 device_id; t2 == 登录帧 safedeviceid** ——
+   注册链响应就是登录帧设备字段的签发源。
+3. **用注册链新签发的 action(t2) + t5 登录 → 直接出 cred ✅** (工具已含此路径)。
+4. t1(32hex) 不是登录帧 hdid: 作 hdid 登录 → APP_SIGN_NOT_MATCH 硬错。
+5. **设备身份绑定在 dfpReport 请求的加密体(10B魔数 571882cf664bb39401ee +
+   加密采集数据)上**: selectOperator 里改 fingerprint/机型不影响 t1/t5 →
+   不触发重新注册。加密体生成算法未破解 (逆向笔记 待破解#2), 因此目前
+   只能"重放真机加密体" -> 拿到的设备身份永远等于抓包那台真机。
+6. hdid 由 libhydeviceid.so 本地生成并经 native setDeviceInfo(msgType
+   0xb000021) 上报, **不走 HTTP (全部 HAR 无此帧)** -> 纯代码无法铸造新 hdid。
+
+**因此完整答案**:
+- "注册上报接口" = wsapi.huya.com 三连 (getDfpConfig->selectOperator->dfpReport),
+  已实现 tools/huya_device_register.py (证据: evidence/dfp_chain_golden.json)。
+- 但**全新设备铸造**缺两环: ① dfpReport 加密体生成算法 (未破解, 决定设备身份);
+  ② hdid 的 native 注册通道 (setDeviceInfo, 无 HTTP 等价)。这两环不解决,
+  纯代码只能"以真机加密体身份"登录 (device_id/safedeviceid 服务端签发,
+  每账号可用新 action), 做不到"每账号一台全新设备"。
+- 每账号隔离现状 (已实测): fingerprint/device_id/机型随机 + 共用金样本 hdid
+  + 注册链新鲜 action -> cred/cookie 全通。
diff --git a/evidence/dfp_chain_golden.json b/evidence/dfp_chain_golden.json
new file mode 100644
index 0000000..3c1d72f
--- /dev/null
+++ b/evidence/dfp_chain_golden.json
@@ -0,0 +1,14 @@
+{
+ "getDfpConfig": {
+  "req_b64": "AAAAQxADLDxMVgxodXlhdWRid2VidWlmDGdldERmcENvbmZpZ30AABUIAAEGBHRSZXEdAAAICgYENTAwOAuMmAyoDA==",
+  "resp_b64": "AAAAvhADLDEAgExWDGh1eWF1ZGJ3ZWJ1aWYMZ2V0RGZwQ29uZmlnfQABAI0IAAIGAB0AAAEMBgR0UnNwHQAAeQoIAAEGBDUwMDgWbE5MbEd0eGJ4U0IyRmhKZ0xlYzkxYTVZdWVjbVoxMUlCYVFUQi9BZldpV2xLRkk3NGNpQm9KblJVbUFpT1liNC9CaTk5alJvQ2R1S2NBRWdHS3NqaXRZL2cwZTQzYkVFa2N0aTVFazBMdjMwPQuMmAyoDA=="
+ },
+ "selectOperator": {
+  "req_b64": "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",
+  "resp_b64": "AAAAuxADLDEAgExWDGh1eWF1ZGJ3ZWJ1aWYOc2VsZWN0T3BlcmF0b3J9AAEAiAgAAwYAHQAAAQwGCV93dXBfZGF0YR0AADEKCgwWAzEuMCYTaHl1ZGJfMTc4NzU4MzczMDQwMjxGAFYAYwAAAaA0SxN8dgALEAELBgtfd3VwX2hlYWRlch0AAC0KDBYDMS4wJhNoeXVkYl8xNzg3NTgzNzMwNDAyPEYAVgBjAAABoDRLE3x2AAuMmAyoDA=="
+ },
+ "dfpReport": {
+  "req_b64": "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",
+  "resp_b64": "AAABWBADLDEAgExWDGh1eWF1ZGJ3ZWJ1aWYJZGZwUmVwb3J0fQABASoIAAIGAB0AAAEMBgR0UnNwHQABARUKBgIxMBYgODY1YTQ5MjRhNDA4OTdhYzFmY2ZlNmI0YzJjYmIwNDUmtFBRd2VtQU45TkhrWktvTXFWWVByYmhJeXBxTVRhUUVPcm1YcjM3eFFWaFFacXJQeGpVS0VRMTExdkUwaHNMUWk3UGpCNXdrbFNxT05xYXI4UmFOWGlSQlhtSzEwQ0JoT0JEL2NsVEg2SDRzUlZjcTZ0UzlXb0F2a1YyalFpVGJJdW02TTRuWlNlTVFXa0xsRDhvZW5DT3ljbnVkaEY4WDQ3NjZjSzVZWEUzZEJha3N6dVMzMzIAAKjARgZhY3Rpb25WKDdjNTM4N2UwNTM5YzAyM2MzMWM0ZmYwZTgwN2U3MjU2MTE3Mzg1ZWULjJgMqAw="
+ }
+}
\ No newline at end of file
diff --git a/tools/huya_device_register.py b/tools/huya_device_register.py
new file mode 100644
index 0000000..7353ffb
--- /dev/null
+++ b/tools/huya_device_register.py
@@ -0,0 +1,179 @@
+"""虎牙 App 设备指纹注册链 —— 纯 Python 直连 wsapi.huya.com (无登录门槛).
+
+链路 (servant=huyaudbwebui, 均为 TAF/WUP 信封 POST):
+    getDfpConfig -> selectOperator -> dfpReport
+        -> 响应下发 t1(32hex 设备指纹) / t2(base64 action=safedeviceid) / t5(40hex session hash)
+
+实测结论 (2026-08-26):
+- 三接口均可纯 Python 直连重放 (HTTP 200)。
+- dfpReport 响应 t5 == WUP 登录帧的 device_id; 响应 t2 == 登录帧的 safedeviceid ——
+  注册链响应就是登录帧设备字段的签发源。用注册链新签发的 t2/t5 登录 -> cred ✅。
+- t1(32hex) 不是登录帧 hdid (实测作 hdid 登录 -> APP_SIGN_NOT_MATCH)。
+- 设备身份绑定在 dfpReport 请求的"加密体"(10B 魔数 + 加密采集数据)上:
+  selectOperator 里改 fingerprint / 机型号不影响 t1/t5 -> 不重新注册设备。
+  加密体生成算法未破解 (逆向笔记 待破解#2), 因此目前只能"重放真机加密体",
+  得到的设备身份永远等于抓包那台真机 —— 无法纯代码铸造全新设备。
+- hdid 由 libhydeviceid.so 生成本地设备ID, 经 native setDeviceInfo 报告,
+  不走 HTTP (抓包不可见), 纯代码无法铸造新 hdid -> 多账号必须复用金样本 hdid。
+
+用途:
+    登录前重放注册链拿"新鲜 action"作为 safedeviceid (比固定金样本更像真机),
+    配合每账号随机 fingerprint/device_id/机型 (soft 字段) 使用。
+
+用法:
+    python tools/huya_device_register.py            # 走完整注册链并打印 t1/t2/t5
+    python tools/huya_device_register.py --login    # 注册链 -> 用新action登录出cred
+"""
+from __future__ import annotations
+
+import base64
+import hashlib
+import json
+import re
+import sys
+import time
+from pathlib import Path
+
+import requests
+
+HERE = Path(__file__).resolve().parent
+if str(HERE) not in sys.path:
+    sys.path.insert(0, str(HERE))
+
+WSAPI = "https://wsapi.huya.com"
+WUP = "https://wup.huya.com"
+UA = "okhttp/3.14.9"
+GOLDEN_BIN = HERE.parent / "evidence" / "wup_passwordlogin_taf.bin"
+GOLDEN_HDID = "ed0db8334cadd236c00cadf7e11ab5a5"  # libhydeviceid.so 设备ID, 不可铸造
+# 抓包真机加密体(dfpReport 请求) —— 设备身份锚, 加密算法未破解, 只能重放
+DFP_CHAIN_PKL = "/tmp/dfp_chain.pkl"
+EVIDENCE_CHAIN = HERE.parent / "evidence" / "dfp_chain_golden.json"
+
+
+def _load_chain() -> dict[str, tuple[bytes, bytes]]:
+    import pickle
+    if Path(DFP_CHAIN_PKL).exists():
+        return pickle.load(open(DFP_CHAIN_PKL, "rb"))
+    if EVIDENCE_CHAIN.exists():
+        d = json.loads(EVIDENCE_CHAIN.read_text())
+        return {k: (base64.b64decode(v["req_b64"]), base64.b64decode(v["resp_b64"]))
+                for k, v in d.items()}
+    raise FileNotFoundError("先运行测试提取 dfp_chain.pkl 或在有 HAR 的环境执行")
+
+
+def _post(url: str, body: bytes, ct: str = "application/octet-stream") -> requests.Response:
+    return requests.post(
+        url, data=body,
+        headers={"Content-Type": ct, "User-Agent": UA, "Accept-Encoding": "gzip"},
+        timeout=20,
+    )
+
+
+def get_dfp_config(chain) -> bytes:
+    """getDfpConfig -> 80B 配置 (前64B+后16B, 疑似AES key/IV 材料)."""
+    reqb, _ = chain["getDfpConfig"]
+    r = _post(WSAPI, reqb)
+    r.raise_for_status()
+    m = re.search(rb"\x16\x6c([A-Za-z0-9+/=]{108})", r.content)
+    if not m:
+        raise ValueError("getDfpConfig 响应无配置")
+    return base64.b64decode(m.group(1))
+
+
+def select_operator(chain, fingerprint_40hex: str | None = None) -> int:
+    """selectOperator -> 选中运营商索引; 可替换上报的设备指纹(不影响设备身份)."""
+    reqb, _ = chain["selectOperator"]
+    if fingerprint_40hex and len(fingerprint_40hex) == 40:
+        idx = reqb.find(b"02df398797432eadefcc12767119ad5e80999389")
+        if idx >= 0:
+            reqb = reqb[:idx] + fingerprint_40hex.encode() + reqb[idx + 40:]
+    r = _post(WSAPI, reqb, "application/x-wup")
+    r.raise_for_status()
+    m = re.search(rb"_wup_data\x1d\x00\x00\x01", r.content)
+    return 1  # 金样本返回运算符索引 1
+
+
+def dfp_report(chain) -> tuple[str, str, str]:
+    """dfpReport 重放 -> (t1 32hex设备指纹, t2 base64 action=safedeviceid, t5 40hex session hash).
+
+    每次重放 t2 都是服务端新签发的 action; t1/t5 由加密体(设备身份)决定, 恒定。
+    """
+    reqb, _ = chain["dfpReport"]
+    r = _post(WSAPI, reqb)
+    r.raise_for_status()
+    b = r.content
+    t1 = re.search(rb"\x16\x20([0-9a-f]{32})", b).group(1).decode()
+    m2 = re.search(rb"\x26\xb4([A-Za-z0-9+/=]{180})", b)
+    t2 = m2.group(1).decode("latin1")
+    t5 = re.search(rb"\x56\x28([0-9a-f]{40})", b).group(1).decode()
+    return t1, t2, t5
+
+
+def fresh_action() -> str:
+    """跑一遍注册链返回新签发的 action (登录帧 safedeviceid)."""
+    chain = _load_chain()
+    get_dfp_config(chain)
+    select_operator(chain)
+    _t1, action, _t5 = dfp_report(chain)
+    return action
+
+
+def login_with_registered(action: str, t5_device_id: str,
+                          account: str, password: str,
+                          golden_hdid: str = GOLDEN_HDID,
+                          fingerprint: str | None = None) -> str:
+    """用注册链下发的 action/device_id + 金样本 hdid 登录, 返回 cred hex."""
+    from huya_wup_encoder import build_password_login_wup
+    from app_login_flow import parse_cred, parse_risk_url
+
+    raw = GOLDEN_BIN.read_bytes()
+    mj = json.loads(re.search(rb"(\{\"associationId.*?\})", raw).group(1))
+    ua_json = re.search(rb"(\{\"curl\".*?\"user_action\":\[.*?\]\})", raw).group().decode()
+    dev = {
+        "app_version": "13.4.22", "sdk_version": "1.0.80138",
+        "vendor": "xiaomi", "model": "M2102J2SC", "os": "android",
+        "ip": "127.0.0.1",
+        "fingerprint": fingerprint or "02df398797432eadefcc12767119ad5e80999389",
+        "screen": "M2102J2SC,30,11", "width": "1080", "height": "2120",
+        "device_id": t5_device_id,
+    }
+    pkt = build_password_login_wup(
+        account[3:], hashlib.sha1(password.encode()).hexdigest(),
+        action, golden_hdid, mj["session"], mj["traceId"], ua_json, dev)
+    r = requests.post(
+        WUP, data=pkt,
+        headers={"Content-Type": "application/multipart-formdata; charset=UTF-8",
+                 "User-Agent": "Dalvik/2.1.0 (Linux; U; Android 11)",
+                 "Accept-Encoding": "gzip"},
+        timeout=15)
+    cred = parse_cred(r.content)
+    rk = parse_risk_url(r.content)
+    if cred:
+        return cred.hex()
+    if rk:
+        return f"NEED_RISK:{rk[:80]}"
+    return f"REJECTED:{len(r.content)}B"
+
+
+if __name__ == "__main__":
+    if "--login" in sys.argv:
+        acct = sys.argv[sys.argv.index("--login") + 1]
+        pwd = sys.argv[sys.argv.index("--login") + 2]
+        act = fresh_action()
+        _t1, _t2, t5 = (lambda c: dfp_report(c))(_load_chain())
+        print("注册链新 action 前缀:", act[:16], " len:", len(act))
+        print("注册链 t5 (device_id):", t5)
+        out = login_with_registered(act, t5, acct, pwd)
+        print("登录结果:", ("cred " + out[:16] + "...") if out.startswith(("0a", "0b")) else out)
+    else:
+        chain = _load_chain()
+        cfg = get_dfp_config(chain)
+        sel = select_operator(chain)
+        t1, t2, t5 = dfp_report(chain)
+        print(f"getDfpConfig: {len(cfg)}B 配置")
+        print(f"selectOperator: 运营商索引={sel}")
+        print(f"dfpReport: t1={t1}")
+        print(f"           t2(action)={t2[:16]}... len={len(t2)}")
+        print(f"           t5(session)= {t5}")
+        print("\n结论: t2＝登录帧 safedeviceid, t5＝登录帧 device_id,"
+              " 均服务端签发; hdid 是 libhydeviceid.so 设备ID不可铸造.")
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