plain editionlinkingconnecting·Fixing Rate-setting Nº 48

Prints are hourly, each with its confidence interval and its attack-cost-per-bp: a bound only Arc’s deterministic USDC fees make a number.

A fresh rate every hour, each with its honest give-or-take and . Only possible on Arc, where fees are fixed dollars.

On-chain registerThe public record6
eip155:5042arcscan ↗
ACROracle
the rate itself · every hourly print lands herethe scoreboard · every hourly rate is written here
ACRFutures
the cash-settled venue and its order booksthe trading desk · every position and every fill
AttestationRegistry
sellers’ signed reliability claims, kept on chainwhere sellers sign their own uptime claims, in public
FeedAccessAttestor
a paid query, recorded on chain as a rightproof that a question was paid for, kept in public
USDC
the dollars, and the gas the fees are charged inthe digital dollars · they also pay the fees
GatewayWallet
Circle Gateway custody · the desk’s own floatwhere the shop’s own dollars are held

Readers trade from Circle user-controlled wallets: the key lives behind a PIN, never with us.You trade from your own wallet. The key sits behind your PIN, never with us.

The estimator, the signature and the on-chain print are real. The settlement flow underneath is simulated.The rate, its signature and the blockchain record are real. The money moving underneath is pretend.

FIRST EDITION · LINKINGFIRST EDITION · CONNECTING · SET IN PLAIN TYPE · AN ARC / CIRCLE BUILD · ON ARC MAINNET (5042)ON THE REAL NETWORK