United States Dollar Cat 價格USDC

🚨🆙 ICYMI: USDC supply on the @Polkadot AssetHub increased by ~$100 million in the past month.

RT @Dune: From our LATAM 2025 Report: stablecoins are the money layer. In Jul ’25, USDT+USDC accounted for >90% of exchange transfer volume…

🔥 HUGE: $USDC circulation increased by 600M in the past week.

Hey Bro, I was searching for news on Ethereum on social media and came across x402. What's that, bro? So, back in the 90s when they first built the internet, they had a wild idea. They created an HTTP error code, 404 Not Found (which you see all the time), but they also created 402 Payment Required. ​The 402 code was a ghost. It was built for a future where you could pay for a webpage or an API call directly, but the tech never existed to make it work. So, for 30 years, it's been an empty placeholder. ​x402 is a new, open protocol that finally turns that 402 error code on. It's a system that lets a server "request payment," and your client (or an AI bot) can instantly "pay the bill" with crypto, all inside the normal flow of browsing the web. ❍ ​Okay, but why do we even need this? Don't we have credit cards and subscriptions? ​We do, but those are built for humans. The new buzz is all about machine-to-machine payments. ​The Problem: Think about an AI agent. It doesn't have a credit card. It can't fill out a checkout form. It can't sign up for 100 different subscriptions to get 100 different pieces of data. ​The Solution (x402): The AI agent makes a request to a server for some data. The server just sends back a 402 "bill" saying, "Pay 5 cents in USDC to this address." The AI agent can read this, programmatically send the 5 cents, and get its data, all in under a second. No accounts, no sign-ups, no human needed. ​❍ So how does it actually work? What's the flow? ​It’s just a simple, two-step conversation between computers: ​The Server's Bill: Your browser (or an AI bot) tries to access api.data.com. The server replies, "Nope. 402 Payment Required. Here's your bill: Send 0.05 USDC on Base to 0x123...." ​The Client's Payment: Your wallet or the AI agent sees the bill, makes the on-chain payment, and then tries again. This time it says, "Here's my request, and here's the proof of payment (the transaction hash)." ​The server verifies the payment and sends back the data. It’s a pay-as-you-go internet. ❍ ​If it's just a protocol, why is it all over my timeline right now? ​Because of the companies who just announced they're backing it. The "x402 Foundation" was just launched by two of the biggest giants in their fields: Cloudflare (which runs a huge chunk of the internet's backbone) and Coinbase (which is pushing its Base L2 and USDC stablecoin). ​dont take it as a random dev project. It's a massive, coordinated push to build the payment rails for the new AI economy, and they're building it on crypto.