How paying works

Overview

Payment flow

1. 1
   Enter a handle

   On the web Pay page (or the extension).
2. 2
   Approve and pay

   Two wallet prompts the first time, one afterwards.
3. 3
   USDC escrowed

   Credited to the handle in under a second.
4. 4
   Recorded onchain

   TipSent event with amount, fee and message.

Payment assets

USDC

USD Coin · 6 decimals

Live

$1$5$10$25

Min 0.1 USDC · fee 1% · max: your USDC balance. Escrowed by its own PayX contract (explorer).

Each asset has its own escrow contract, its own per-handle balances and its own claims. Payments in different assets never mix.

Fees

Messages

Onchain events

Every payment emits a TipSent event:

event TipSent(
    string indexed handleHash,  // keccak256 of the normalized handle
    string handle,              // "username" (lowercase, no @)
    address indexed tipper,     // sender wallet
    uint256 amount,             // NET amount credited (units of the instance's escrow token, e.g. USDC 6dp)
    uint256 fee,                // platform fee (same units)
    string message,             // optional message
    uint256 timestamp           // block timestamp
);

All USDC payments are queryable on the Arc explorer; each additional asset's instance emits the same event.

Best practices