> ## Documentation Index
> Fetch the complete documentation index at: https://custodydocs-zh.chainup.com/llms.txt
> Use this file to discover all available pages before exploring further.

# 质押

> 质押锁定BTC

#### 请求参数数据结构

**sub\_wallet\_id** `integer` *required*

钱包id

**lock\_number** `integer` *required*

质押周期（块高）

如果需要测试未到期赎回，需要按照babylon官方要求填写 lock\_number跟amount；如果需要测试到期提现，可以将lock\_number 设置小点，金额至少需要>当前矿工费 + 最小提币金额

**symbol** `string` *required*

币种唯一标识，例：`BTC`

**amount** `string` *required*

质押金额

**fp\_key** `string` *required*

Finality Provider

**request\_id** `string` *required*

质押唯一标识

**fee** `string`

自定义矿工费，例：`0.021`

#### 响应参数数据结构

**object**

**stake\_id** `integer`

平台stake\_id

```curl cURL theme={null}
curl -X POST \
--url 'https://openapi.chainup.com/api/mpc/babylon/stake?app_id=16a9f17fc2ad61ca4339fdd6a8a37f21&data=SWYYr-LBVAmaS0eq8n-CUT_nHkM3OBxyWOsImMTe41UaqAoYI2ZghmaphXHov-7hsRsVmOhyPqC-JFuRGvonJKFd2Jirxv6Vn_8V40r_MMYTkhqcviQbZWYW5xX8Ai8CIpqas9fIWVDIYA_NKBl0UCJpwGxscxLNpjq5Z8-BTyIYDsVBquM9zEQGBCfcA7szD9n2fN_loSkoexlwqV8wg9HIZO5yQ6utZ_Kt0lNDQQb8zn8BwfAvsEsbJlOINUAqhxh1vV_AJ4bXn2uYx8TaYcBht-n_ZcBdxIDt975dbOFUiH-oCzIuDi1oLDtb4EylfCvhU5E4ozel_lQ-6cyIG0Dqiiyx0RFFOCJzPSXIoV031pvoa8pTCpkWklh8mRw1rylBgeZtqSxpnJO2_u2RIlXq6Hs8Yly9CmhIXaSrUgPir0h6xVxlf4VC6PFVCkiiTlp0kZ_H_UbKm0nUis3v3U2sflWJ2C449waSrikhuxVrFAQ6PQmrFVCAE6MYXNrFXJQuam2HAIQNSGbFQjspw8b_bXyfyZMGZ3K2oBC4I_v3eETTdPe0pfSNJb-5g37K0tOAr_UFbWK8pkC8yl56fSjn8tcR3yCRWwoi8jxTcUBiswTtvXZtzgG4dyzkaHXjsZjSGiywXSqP76VZWlyOmAx6IDSViLcPLPISdU3ruCI'
```

```json theme={null}
{
    "stake_id": 10241
}
```


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