Base
Base is a blockchain network built by Coinbase. Its documentation describes it as an Ethereum layer-two network with stablecoins and payments built into the chain. It lists stablecoin payments, including payments made by agents, among the uses it is built for.
Base's documentation calls it the blockchain for global finance. It states that stablecoin issuance, payments and compliance controls are part of the chain itself, where on other networks a builder would write or audit contracts for them.
For a machine payment the network is where the transfer is recorded. An x402 payment challenge states the network it expects payment on in CAIP-2 form, and names the asset as a token contract on that network, such as USDC.
The network's record is public. A transfer to a quoted address can be read from a copy of the chain without asking the buyer, the seller or the facilitator that submitted it.
→ probe402 read the signed transfers of USDC that reached listed payment addresses on Base over a month, in this issue of the Machine Commerce Reality Index.
Sources
- BaseBase documentation
- Base Documentation: the index for AI assistantsBase documentation
- The x402 specification (v2)x402 Foundation
Related Solana · USDC · CAIP-2 · stablecoin · settlement