vuk is a polymarketVerified builder code listed lowercase on the official Polymarket Builders directory with no verifiable public product surface. The obvious candidate domain — vuk.com — was investigated and rejected as a wrong-URL match: it is a Superlander/Grails premium-domain marketplace page advertising the domain for sale to 'visionary entrepreneurs' with no product content, no Polymarket reference, and no relationship to prediction markets. The three-letter brand name is short enough that domain squatters routinely list it on premium-domain auctions, making the .com a near-certain miss.

External search across Polymark.et, GitHub, Crunchbase, X / Twitter, and crypto-tool directories returned no candidate Polymarket-related 'vuk' product at any plausible alternative domain (vuk.app, vuk.io, vuk.xyz, vuk.trade, vuk.markets, etc.). The short non-English name is difficult to disambiguate from unrelated uses across many languages (Serbian 'vuk' means 'wolf'; the name appears in many gaming and developer handles), so it is plausible the team operates publicly under a different brand while routing attribution through this builder code.

The on-chain footprint is the only confirmable signal and is diagnostic. As of May 2026, vuk ranks #263 all-time on the Polymarket Builders leaderboard with $9.6k cumulative routed volume from exactly 1 unique user and a null 30-day rank. A 1-wallet profile is the on-chain signature of one of three patterns: a personal whale registering a code for self-rebate, a private OTC flow, or a developer's internal-testing builder code that captured some early volume. Founders, team size, funding, pricing, and features are all unknown. The polymarketVerified tick is the only confirmation that this builder code exists.