Figure 4. Boundary Test for Crypto Transactions_Determining the Proper Legal Lens

Figure 4, titled Boundary Test for Crypto Transactions: Determining the Proper Legal Lens, is derived from Decker, Nicolin (2026), The Legal Tender Closure Gap Doctrine: Private Crypto Settlement, Transactional Use, and the Limits of Securities and Commodities Classification. The figure translates Table 7 into a full-page 8.5 × 11 landscape matrix for legal, regulatory, policy, and public interpretability. The figure provides a structured boundary test for analyzing digital-asset transactions. Its purpose is to prevent classification collapse by asking what legal function the transaction assigns to the crypto asset. The matrix separates five inquiries: investment boundary, market boundary, property boundary, payment boundary, and closure boundary. The investment boundary asks whether the asset is being used to raise capital, create profit expectation, provide yield, pool value, or rely on managerial or entrepreneurial efforts. If so, securities law may provide the primary lens. The market boundary asks whether the asset is being traded, leveraged, margined, cleared, custodied, routed, paired, or used through derivatives, swaps, futures, fraud, manipulation, or market infrastructure. If so, commodities and market regulation may provide the primary lens. The property boundary asks whether the asset is being owned, disposed of, valued, accounted for, gifted, inherited, pledged, or taxed. If so, tax and property law may provide the primary lens. The payment boundary asks whether the asset is being tendered or accepted to satisfy an invoice, wage obligation, service agreement, private debt, remittance, or contractual duty. If so, payment and settlement analysis may provide the primary lens. The closure boundary asks whether the claim is that the payment closed the obligation through sovereign-recognized monetary authority. If so, legal-tender closure analysis is required. This inquiry asks whether the obligation was resolved through lawful money, legal tender, Federal Reserve notes, United States coin or currency, or another instrument granted equivalent closure status by competent legal authority. The matrix does not create a safe harbor and does not rank legal regimes. It is sequential for analytical clarity, not hierarchical in legal priority. A single crypto transaction may trigger multiple frameworks at once. The purpose is to assign each framework its proper question while preserving independently triggered securities, commodities, tax, Treasury, FinCEN, OFAC, commercial-law, payment-system, and legal-tender analysis. The public-facing bridge is simple: the question is not merely what the asset is called. The question is what the transaction asks the asset to do. Function determines posture, and posture determines the governing legal question.