Web3 payment and compliance infrastructure Pieverse announced that it will launch the x402b protocol, extending the x402 protocol to BNB Chain using Pieverse Facilitator, supporting EIP-3009 gas-free payments and auditable receipts. x402b solves the gas-free problem by introducing pieUSD, allowing users to complete payments with just a signed message; at the same time, custom Facilitator generates receipts that comply with the jurisdiction at the time of payment settlement, and are immutably stored in BNB Greenfield.