Crypto
The 6-character bug that made my x402 endpoint unpayable for two weeks
USDC is a ticker; the EIP-712 domain name is 'USD Coin'. I shipped the ticker in three response layers, so every standard client signed a digest the token contract rejected - with no error on my side. The three real settlements that proved the fix, and the four rules I now apply before calling any paid endpoint live.
- 1 unlock



