According to @alice_und_bob, the Polkadot Builder Party account posted a welcome message to @0xMert_ on X on Nov 11, 2025, confirming the handle mention within the event context; Source: https://twitter.com/alice_und_bob/status/1988315914945917287. According to @alice_und_bob, the post includes a link to an X status by @errore0, documenting the cross-posted reference; Source: https://x.com/errore0/status/1988280072021963071. For traders monitoring DOT ecosystem activity, this confirms a live community touchpoint on the reported date; Source: https://twitter.com/alice_und_bob/status/1988315914945917287.