ChainCatcher 消息，Coinbase CEO Brian Armstrong 周四披露三项平台级数据：年稳定币流转量近 1 万亿美元、平台持有约 200 亿美元 USDC、代理支付协议 x402 过去一年处理逾 1.6 亿笔自主交易。据 SEC 文件，Coinbase 一季度平均 USDC 持有量达 190 亿美元创历史新高，全部 USDC 流通量中逾 25% 位于 Coinbase 生态内。
USDC 总流通量目前为 750 亿美元。1 万亿美元稳定币流转量指通过 Coinbase 支付基础设施的转账，作为对比 Visa 2025 财年处理约 14.5 万亿美元。x402 协议以 HTTP 402 错误码命名，允许 AI 代理在网络请求中直接以 USDC 链上支付，1 美元以上交易占 x402 转账量的 95%。
Base 链今年已处理 19 万亿美元稳定币交易量，x402 逾 90% 的交易量运行在 Base 上。x402 基金会创始成员包括 Google、Stripe、Visa、Mastercard 与 AWS 等。
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