该对象由一组节点构成，每个节点代表参与库存交易的一个具体实体。从首至尾的整条节点链代表参与库存直接支付流的所有实体。详细实现示例参见：https://github.com/InteractiveAdvertisingBureau/openrtb/blob/master/supplychainobject.md译稿校对中ENThis object is composed of a set of nodes where each node represents a specific entity that participates in the transacting of inventory. The entire chain of nodes from beginning to end represents all entities who are involved in the direct flow of payment for inventory. Detailed implementation examples can be found here: https://github.com/InteractiveAdvertisingBureau/openrtb/blob/master/supplychainobject.md
| Attribute | Type | Description |
|---|---|---|
| complete required | integer | 指示该链路是否包含回溯至站点、应用或其他库存媒介所有者的交易中所有节点：0 = 否，1 = 是。译稿校对中ENFlag indicating whether the chain contains all nodes involved in the transaction leading back to the owner of the site, app or other medium of the inventory, where 0 = no, 1 = yes. |
| nodes required | object[] | 按链路顺序排列的 SupplyChainNode 对象数组。在完整供应链中，首个节点代表交易中最先参与的广告系统与卖方 ID，即站点、应用或其他媒介的所有者；在不完整供应链中，它代表第一个已知节点。末个节点代表发送本竞价请求的实体。译稿校对中ENArray of SupplyChainNode objects in the order of the chain. In a complete supply chain, the first node represents the initial advertising system and seller ID involved in the transaction, i.e. the owner of the site, app, or other medium. In an incomplete supply chain, it represents the first known node. The last node represents the entity sending this bid request. |
| ver required | string | 所用供应链规范的版本，格式为 “major.minor”。例如，规范 1.0 版使用字符串 “1.0”。译稿校对中ENVersion of the supply chain specification in use, in the format of “major.minor”. For example, for version 1.0 of the spec, use the string “1.0”. |
| ext | object | 供交易平台（exchange）对 OpenRTB 进行专属扩展（exchange-specific extensions）的占位对象。译稿校对中ENPlaceholder for exchange-specific extensions to OpenRTB. |
译注
译者注SupplyChain（schain）的价值：供应链对象是打击域名仿冒（domain spoofing）与套利转售的核心机制，完整链路代表库存从媒介所有者到请求发送方的直接支付流；官方实现示例见 IAB 仓库 supplychainobject.md。译稿校对中
complete 标志的采信策略：complete = 0 表示链路不完整，买方应降低对该库存的置信度或要求补充核验（ads.txt/sellers.json）；头部交易平台与 SSP 应尽量传递完整链（complete = 1）。译稿校对中
节点顺序与透传义务：nodes 按支付流顺序排列；链路中每一方在转发请求时都应追加自身节点并保留已有节点，截断或重写供应链会破坏核验链路并可能违反行业准则。译稿校对中
字段描述收录自 IAB Tech Lab OpenRTB 2.6 官方规范（CC-BY 3.0）· 枚举值来源 AdCOM 1.0 · 初稿校对中