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Cold walletKeeps private keys offline, out of reach of remote attackers.Glossary terms questionsFrequently asked questions drawn from the halfin glossary terms pages. Each one links to a standalone answer.Are stablecoins exactly equal to one dollar?The peg is a design target, not an identity: a dollar-pegged stablecoin trades very close to one dollar but moves in small amounts around it. On halfin…Can a customer charge back a crypto payment they made through halfin?No. A confirmed on-chain payment is final and cannot be reversed by the customer or their bank — there is no issuer or card network to claw the funds…Can a customer dispute a crypto payment the way they dispute a card charge?Not in the same way. A confirmed on-chain payment is final, so there is no bank or card network that can force the funds back. A customer can still…Can a customer pay a halfin invoice in a native coin?Yes. halfin supports native coins as payable assets directly — BTC, ETH, SOL, XRP, TRX, and the BNB Smart Chain's base coin — alongside stablecoins. The…Can a customer pay an Ethereum invoice from a layer-2 like Base or Arbitrum?No — each network is distinct, even for the same asset. USDC on Ethereum, Base, and Arbitrum share a token standard but are separate deposits on separate…Can a gas fee make a payment arrive short?It can, if the payer's wallet takes the fee out of the amount being sent rather than adding it on top — common when someone asks a wallet to send its…Can a payment platform keep all its keys in cold storage?No. Detecting deposits, sweeping them, and sending payouts automatically require signing transactions without a human in the loop, which means some keys…Can a payout be reversed once it is sent?No. Once halfin has signed, broadcast, and confirmed a payout, it is an on-chain transfer that is final — no third party can pull it back. That is why…Can a refund be partial?Yes. A refund is reasoned about relative to the amount paid on the original invoice, so it can return the full paid amount or part of it — for example a…Can I pay a halfin invoice with a wrapped token?No — halfin detects and credits the native assets and first-class tokens of the chains it supports, and there is no wrapped-token gate. A wrapped form has…