Payments glossary
Stablecoin
A stablecoin is a cryptocurrency designed to hold a steady value, usually pegged 1:1 to a currency such as the US dollar and backed by reserves. It settles like crypto - in seconds, across borders, around the clock - which is why it underpins much of the emerging machine-payment stack.
How a stablecoin holds its value
In the dominant, fiat-backed model, the issuer holds reserves - cash and short-dated government securities - and stands ready to issue or redeem coins one-for-one against the pegged currency. The peg holds exactly as long as the reserves are real and redemption is honoured, which is why reserve attestations and regulation are the heart of the stablecoin conversation. Designs that tried to hold a peg algorithmically, without full reserves, have collapsed before - the backing is the product.
Why payments people care
Strip away the crypto framing and a stablecoin is a settlement asset with unusual properties: transfers are final in seconds, run every hour of every day, cross borders without correspondent banking chains, and can be moved by software in amounts too small for card economics. Those properties are exactly what machine-initiated payments need, which is why early x402 implementations commonly settle in stablecoins and why regulators worldwide are now building formal frameworks around fiat-backed issuance.
Stablecoins and agentic commerce
In the emerging agentic stack, stablecoins are the money-movement layer beneath protocols such as x402, while mandate protocols such as AP2 supply the authorisation. LekkaPay tracks this stack as part of its agentic payments work, which is in development at /agentic/.
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