here's an explainer of the workflow with each - hope this is clearer:
Square: customer pays with credit/debit fiat card > funds go into biz bank account run by Square> a % of income owner sets gets sent & converted to connected a CashApp account as bitcoin
customer payment options: fiat only, credit/debit/ACH payments to the Square bank account setup with the business profile
Strike : customer pays Strike invoice, funds arrive as either bitcoin /fiat in account according to receiver split
customer payment options: Fiat (through Strike account) or bitcoin via Lightning/on-chain
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