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About halfinhalfin is digital-asset payment infrastructure for online businesses that move money across borders. What it does, who it is for, and how it fits.Platform questionsFrequently asked questions drawn from the halfin platform pages. Each one links to a standalone answer.Does halfin make custody guarantees?halfin's controls are signing (HMAC-signed webhooks you can authenticate), permissions (scoped API keys), and audit (a recorded trail of who created and…Does the locked rate affect what I pay?The rate lock is about exchange-rate certainty, not fees. When a fiat-anchored invoice activates, halfin freezes the conversion rate and pins the payable…How do I get a quote for my business?Talk to the team. Pricing is sized to how you transact, so bring your rough monthly volume, the chains and assets your customers use, and whether you lean…How does halfin stop a payment from being credited and then reversed?Crediting waits for confirmations to reach a per-chain threshold and is reorg-aware: if a chain reorganization unwinds a transaction halfin was tracking…How much does halfin cost?halfin's commercial pricing is not published on this site yet, so there is no fee figure to quote here. We deliberately avoid putting percentages or…Is halfin a regulated or licensed payment provider?halfin makes no regulatory or licensing claim. Compliance such as know-your-business onboarding, anti-money-laundering awareness, and travel-rule handling…Is the network fee the same as a halfin fee?No — they are completely separate layers. A network fee (gas on Ethereum and EVM chains, a miner fee on Bitcoin, a ledger fee on XRP) is charged by the…Is there a sandbox, and how do I get test keys?Yes. Sandbox access and test API keys come from the dashboard. You can create invoices, run them through their full lifecycle, and exercise your webhook…What can someone do with a leaked API key?Only what that key was scoped to do. halfin keys carry scoped permissions, so issuing each integration the narrowest key it needs bounds the blast radius…What is halfin, in one sentence?halfin is digital-asset payment infrastructure for online businesses — it lets you bill in your home currency, accept the crypto your customers hold, and…