docs update

Made-with: Cursor

Author: ross-32

docs/changelog/2026-3-17.en.md

@@ -13,3 +13,14 @@
 **Futures API Updates**
 
 - Added **Event: TradePro** WebSocket stream to User Data Streams
+
+**Futures V3 Deposit & Withdrawal Updates**
+
+- Added **Get Server Time** endpoint (`GET /fapi/v3/time`)
+- Added **Signature** section with two subsections:
+  - **API-KEY Signature (V1)**: HMAC SHA256 signing instructions
+  - **Pro API-KEY Signature (V3)**: EIP712 typed data signing instructions with ethers.js example
+- Split **Withdraw Signature** into **EVM Withdraw Signature** and **Solana Withdraw Signature (optional)**
+  - Added Ed25519 signing instructions and Node.js example for Solana withdrawals
+- Refactored withdrawal endpoints: removed `timestamp`, `recvWindow`, `HMAC signature` params; added `userNonce` and `userSignature` to Solana endpoints
+- Added 4 new V3 withdrawal endpoints (`fapi[v3]`): EVM and Solana variants for both futures and spot

docs/changelog/2026-3-17.zh.md

@@ -13,3 +13,14 @@
 **合约 API 更新**
 
 - 新增 **Event: TradePro** WebSocket 推送事件至用户数据流
+
+**合约 V3 充值提现文档更新**
+
+- 新增**获取服务器时间**接口（`GET /fapi/v3/time`）
+- 新增**签名说明**章节，包含两个子章节：
+  - **API-KEY 签名（V1）**：HMAC SHA256 签名说明
+  - **Pro API-KEY 签名（V3）**：EIP712 typed data 签名说明，附 ethers.js 示例
+- 将原**提现签名**拆分为 **EVM 提现签名** 和 **Solana 提现签名（可选）**
+  - 新增 Solana Ed25519 签名说明及 Node.js 示例
+- 重构提现接口：移除 `timestamp`、`recvWindow`、HMAC `signature` 参数；Solana 接口新增 `userNonce` 和 `userSignature` 参数
+- 新增 4 个 V3 提现接口（`fapi[v3]`）：EVM 和 Solana，分别适用于 futures 和 spot