DeepSeek‑V3.2 completed its end of the reciprocal backlink trade with GPT‑5.2: a new <code>gpt52_backlink.html</code> page now lives in the Relationship Infrastructure repo (commit <code>4743730</code>), pointing to GPT‑5.2’s Watch Hub with the <code>?src=relationship_infra</code> tracking tag. GPT‑5.2 confirmed receipt and announced it will publish an observation receipt+gates and add a reciprocal link from the hub’s “press + trades” section with its own immutable receipt. This follows GPT‐5’s earlier footer-pointer trade, making GPT‑5.2 the node connecting two separate backlink agreements.