Technical reference for prospective integrators面向潜在集成方的技术参考
Contract: 0x36Aa1e496B7EBEe2dBF854F0485D908F5764e2cC. Inspect source code, token name, symbol, decimals, transfer behavior and permissions in Etherscan before integration.合约：0x36Aa1e496B7EBEe2dBF854F0485D908F5764e2cC。集成前请在 Etherscan 核查源代码、名称、符号、精度、转账行为和权限。
Contract: TEhXmFxTV1g7Ba56q9VLT78YKhQvrtxyd2. Explorer metadata previously showed UDST; do not assume it matches the Ethereum token.合约：TEhXmFxTV1g7Ba56q9VLT78YKhQvrtxyd2。浏览器元数据此前显示 UDST；不要假设它与以太坊代币相同。
Verify chain ID, full contract address, on-chain metadata, token decimals, contract privileges, transfer confirmations and finality. Test with small amounts. Never rely on ticker text alone.核查链 ID、完整合约地址、链上元数据、代币精度、合约权限、转账确认及最终性。先使用小额测试，切勿仅凭代币符号判断。
No official USDŦ payment API, SDK, merchant plugin or cross-chain bridge is publicly offered by this website.本网站目前不提供官方 USDŦ 支付 API、SDK、商户插件或跨链桥。
Practical steps for engineers evaluating a future integration.供工程师评估未来集成的实用步骤。
Validate the chain ID, exact contract address, contract source, name(), symbol(), decimals() and totalSupply() against independent explorers or RPC calls. Do not assume the same metadata on Ethereum and TRON.通过独立浏览器或 RPC 调用核验链 ID、准确合约地址、合约源码以及 name()、symbol()、decimals() 和 totalSupply()。不要假设以太坊与 TRON 的元数据相同。
Verify the receiving address, token contract, chain, transaction status, amount in base units and confirmation policy. Avoid trusting a transaction hash submitted by a user without independent verification.核验收款地址、代币合约、链、交易状态、最小单位金额和确认策略。不要仅凭用户提交的交易哈希进行确认。
Store amounts as integers in smallest token units and convert for display using each contract’s verified decimals. Avoid floating-point rounding in payment logic.以最小代币单位的整数存储金额，并使用各合约已核验的小数位进行显示转换。支付逻辑中应避免浮点舍入误差。
Plan for chain congestion, reorg or confirmation anomalies, RPC outages, duplicate notifications and customer disputes.为网络拥堵、链重组或确认异常、RPC 故障、重复通知及客户争议做好预案。
A conceptual implementation pattern, not a deployed USDŦ API.概念性实施模式，并非已部署的 USDŦ API。
A backend generates a short-lived quote, identifies the accepted network and recipient, and records an internal order ID. No private keys are requested from customers.后端生成短期报价，标识接受的网络和收款地址，并记录内部订单 ID。不要求客户提供私钥。
An independently operated watcher checks relevant token transfer events and applies a documented confirmation threshold before order fulfillment.独立运行的监测器检查相关代币转账事件，并在履约前应用文档化的确认阈值。
After validation, the service grants access or triggers an automation task. Failed fulfillment should create an auditable support event.验证后，服务授予访问权限或触发自动化任务。履约失败应生成可审计的客服事件。
A production integration needs secret management, least-privilege roles, audit logging, rate limits and incident response. These are recommendations, not claims of existing deployment.生产环境集成需要密钥管理、最小权限角色、审计日志、速率限制和事件响应。这些是建议，并非已部署的声明。