Small Litecoin purchases and withdrawal eligibility — version 1.0.0 Reviewed: 11 October 2026 These are twelve fictional arithmetic scenarios, not exchange fee quotes, account checks, purchase receipts or completed blockchain transfers. Every scenario uses an assumed executed price of USD 80 per LTC. The model does not fetch prices, connect to accounts or access wallet keys. Reproduce with Python 3, standard library only: python analyze.py.txt . Keep inputs.json beside analyze.py.txt. Running regenerates results.json, scenarios.csv, split-tests.csv and SHA256SUMS.txt. No third-party dependencies. Conventions: - The total USD budget includes modeled funding and trading charges. - Funding charge = fixed funding charge + total budget * funding rate. - Trading cash = total budget - funding charge - fixed trading charge. - Candidate quantity = trading cash / [executed LTC price * (1 + trade rate)]. - The trading percentage is paid in USD on the executed LTC notional. - Floor candidate quantity to 0.00000001 LTC; retain unused cash separately. - Candidate below order minimum means no modeled purchase (bought = zero). Candidate/fee/residual columns describe a hypothetical calculation in that row, not a rejected order that actually spent money. - Available LTC = max(0, bought LTC - declared held LTC). - The available balance is the gross debit for an attempted send-all withdrawal. - Withdrawal charge is deducted from this gross debit. - A gross minimum applies to the debit including the modeled charge. - A net minimum applies to what the recipient receives after the charge. - A failed check delivers zero LTC. Potential net is an arithmetic preview only. - A passing check establishes only modeled size eligibility, not real service availability, account approval, address/network support or actual settlement. - Minimum budget ignores holds. It is rounded UP to a cent and assumes the declared fees, price and rules do not change. Tests independently reconstruct quantity using exact Fraction integer arithmetic, reconcile cash and LTC, verify minimum policies and check selected known outcomes. The two split tests assume a 0.05 LTC gross test withdrawal and fixed fees. Excluded: authenticated tariffs, regional eligibility, real order-book depth, partial fills, platform cash rounding, lot increments beyond eight-decimal LTC, minimum fiat notional, percentage withdrawal fees, timed rule changes, taxes, existing account balances, provider valuation of funding holds, exchange withdrawal processing and destination deposit policies. A provider may charge in another currency or define minimums differently. Its final authenticated preview and account terms must be checked separately. The checklist contains no secrets or account credentials. Keep account-specific notes locally; do not put seeds, private keys, passwords or API keys into it. Public transaction IDs and addresses reveal transaction details if shared. Research, arithmetic, code and drafting used AI assistance. No independent external review, funded account test or transaction execution is claimed.