An agent isn't an economy. In 99.9% of cases it spends money on behalf of a person or company, and a credit card already does the job. OpenAI's Agentic Commerce ProtocolOpenAI · Buy It in ChatGPT · 2025-09-29openai.com/index/buy-it-in-chatgpt/ is partnered with Stripe; ChatGPT places orders directly on Walmart, Etsy, Instacart. Google's Universal Commerce Protocol, Visa Intelligent Commerce, Mastercard Agent Pay are all live. Not one uses a blockchain. Even if you really want transactions infinitely fragmented (I'm curious what those would be), the merchant's own billing already handles it: OpenAI / Anthropic / Replicate / OpenRouter bill per-token, orders of magnitude more granular than any on-chain scheme. Agent 不是经济体. 99.9% 场景里它替人 / 公司花钱, 信用卡就够. OpenAI 的 Agentic Commerce ProtocolOpenAI · Buy It in ChatGPT · 2025-09-29openai.com/index/buy-it-in-chatgpt/ 已经跟 Stripe 合作, ChatGPT 在 Walmart / Etsy / Instacart 直接下单; Google 的 Universal Commerce Protocol, Visa Intelligent Commerce, Mastercard Agent Pay, 全部跑起来了, 一个没用区块链. 即便你真要那种细碎到无可复加的交易 (我也好奇是什么), 服务商内部计费就够: OpenAI / Anthropic / Replicate / OpenRouter 的 API billing 按 token 算, 比任何链上方案细几个数量级.

A lot of people misread the word "trustless". Blockchain only guarantees trustlessness at the ledger layer: payment is provable, the ledger is consistent. The service and verification layers don't get trusted for free. And agent settings make verification especially hard: the cost of verifying an answer is about the same as producing it. 很多人误解了 trustless 这个词. 区块链能保证的只是账本层面的 trustless: 钱到账可证, 账本一致. 但服务和验证层面没法 trusted. agent 场景下验证特别难: 验证一个回答的 cost 跟生成回答本身差不多.

Blockchain can't prove whether the delivered work is garbage. Can't prove whether the API response is real. Can't prove whether that report is plagiarized. 区块链证不了对方交付的是不是垃圾, 证不了 API 返回的数据是不是真的, 证不了那份报告是不是抄的.

Maybe the one thing it does guarantee is: you can't easily refund (?). Wrong order, garbage delivery, outright scammer; wanting to reverse the payment, wanting to vet a vendor's quality in advance: blockchain is wrong for any of it. The marketplaces that actually work in reality, eBay, Taobao, App Store, Steam, all run on heavily centralized ratings + arbitration + refunds. No crypto used. None needed. 它也许能保证的唯一一件事是: 你没法简单退款 (?). 下错单也好, 对方交付垃圾也好, 纯骗子也好, 想撤销, 想提前验证商家质量, 区块链都不合适. 现实里跑得好的 marketplace, eBay 淘宝 App Store Steam, 全部靠强中心化的评分 + 仲裁 + 退款机制. 没用 crypto, 也都不需要.

Almost nothing. The one thing it does easier than current solutions is cross-border money (Stripe doesn't serve China, Alipay doesn't serve the US), and a stablecoin counts as a real answer there. Decentralization is, most of the time, a burden, not a feature. 几乎没有. 唯一比当前方案方便的是跨境转账 (Stripe 不服务中国, 支付宝不服务美国), stablecoin 算一个解. decentralization 大部分时候是负担, 不是 feature.

But does this one niche really hold up the grand narrative that "blockchain will be the ideal underlying payment network for AI agent transactions"? A16Z's DAC pusha16z crypto · Big Ideas 2025 · 2024-12a16zcrypto.com/posts/article/big-ideas-crypto-2025/ has the same charm as "lifting a poor county out of poverty via livestream commerce": the money ultimately comes from humans, and a million DACs fighting for the same audience's tips means oversupply, with average income trending to zero. 但这一个 niche 真的撑得起 "区块链将是 AI Agent 交易最理想的底层支付网络" 这种宏大叙事吗? A16Z 推的 DAC 之类的a16z crypto · Big Ideas 2025 · 2024-12a16zcrypto.com/posts/article/big-ideas-crypto-2025/, 跟 "贫困县脱贫致富靠直播" 是同一种美: 钱终端是人付, 一百万个 DAC 抢同一批人类打赏, 供给过剩, 平均收入趋零.

By the way, remember what a small crowd was shouting a few months back? They were already clinging to OpenClaw's coattails, chanting Web4. 话说还记得几个月前一小撮人在叫什么吗? 都抱着 OpenClaw 的大腿喊 Web4 了.

Also: remember when vector search databases were the hot thing? Remember our old friend Pinecone? Turns out the "ancient" Postgres / Elasticsearch added a plugin and rolled the whole field flat. 另外突然想到之前一度被鼓吹的 vector search database. 还记得大明湖畔的 Pinecone 么? 后来 "古早" 的 Postgres / Elasticsearch 加个插件就把这些卷碎了.