MarkOnTop — Deterministic Paid Placement

Alt, sharper: Buy the top spot by bidding. No lottery — rank is pure math.

by rushikeshbodke574

Visit

Oct 17, 2026 Marketing & Sales

advertising bidding deterministic paid placement rankings

About

Claim your category's top spot. $1 entry floor. Deterministic paid placement — highest bid holds the rank until outbid. Paste-ready for the SideProjectors description field:

Deterministic paid-placement advertising platform. Buyers purchase board rank by bid amount — placement is bought, not won. No lottery, no chance, no gambling mechanics anywhere. Ordering is pure and auditable: bid DESC, created_at ASC.

What's inside: category boards (24 sub-categories, 5 groups) · realtime 3D top-3 podium with animated rank swaps · live bid ticker · per-country world map · My Rank dashboard with outbid email notifications · breaking news and streak/engagement features · full light + dark themes.

Stack: Next.js 15 (App Router) · React 19 · TypeScript · Tailwind v4 · React Three Fiber / three.js · Supabase (Postgres + RLS, Magic Link auth, Realtime, Storage) · Razorpay (signature-verified orders, webhooks, chargeback/refund handling) · Vitest.

Buyer gets: full source · 2 DB migrations (RLS + atomic idempotent rank RPC) · payment webhooks · email notifications · 10 test suites · README with one-command setup · deployed demo.

Reason for selling: pivoting to a new venture. Platform is complete and generating no traffic yet — $0 revenue, honestly stated.

Two things to fill in yourself before submitting: the live demo URL (deploy to Vercel first — reviewers reject listings without one) and your asking price.