Lotline turns a chosen xStocks split into an exact plan for the next USDC contribution. The current release supports 10 assets per plan, with 832 identities in its bundled Example catalog. This walkthrough uses the real application, and clearly labeled synthetic estimates. The calculation boundary is explicit. USDC is parsed into integer microunits and percentages into basis points. Big integer arithmetic calculates each allocation, then the largest remainder method distributes leftover microunits deterministically. The total always matches the entered budget. Invalid percentage fields never produce a complete allocation badge. Example is isolated from Live providers. The original six practice assets keep their fixtures. Additional identities use zero illustrative holdings and a generic unit estimate. The catalog includes pinned decimals and official logo assets, while unsupported saved mints remain visible for repair instead of silently replacing a user's draft. Live has a separate verification path. Issuer metadata identifies each asset, then Solana account checks verify its mint and token program. Token-2022 scaled UI Amounts require the current mint configuration and chain time. Raw holdings and quote outputs go through that conversion before display. Decimal formatting alone would be incorrect. The server requests amount specific Jupiter quotes in bounded batches of 3. It requests no transaction and supplies no signing wallet. Each result keeps its own retrieval time and expiry. With a 30 second maximum freshness window. Later batches cannot refresh earlier quotes. Provider failures and missing routes remain explicit states. Copy and CSV exports preserve exact allocations, verified mints, quote sources, and expiry. An export records whether an estimate was fresh or stale when exported. Copying never renews a quote. Editing the budget or percentages clears estimates so amounts cannot reuse a mismatched result. Device drafts keep the contribution budget and split. Signed in users can explicitly save named plans through Supabase, protected by row level security. Public offline caching excludes private account and API responses. Example calculations work offline, while Live estimates require a connection. Email delivery remains disabled until a custom sender is configured. The responsive web app is installable on supported mobile and desktop browsers. It is a contribution planner, not a broker or automatic trader. Users review any purchase independently on Jupiter. Lotline makes the numerical plan repeatable and its Live assumptions inspectable.

A persistent banner identifies the entire recording as a controlled test with mocked wallet and providers. A four-asset contribution is reviewed with exact USDC amounts, minimum raw token output, wallet, network and fees. Two simulated legs confirm. The third has an unknown result, so further approvals stop and the original receipts remain visible. After a reload, Lotline reconciles the original attempt, then resumes only the fourth leg. The completed receipts show historical raw amounts and can be downloaded. Finally, a manual review reminder saves the amount and split, and the recording shows the receipt and reminder layouts on smaller screens. No real transaction was signed or submitted. Every future real contribution would require a fresh review and explicit wallet approval once execution readiness requirements are met.