Model Order Reduction

The lepton was the smallest coin of the Greek world, one hundredth of a drachma. The name survived until the euro replaced the drachma in 2002. An obol was a small silver coin worth one sixth of a drachma in classical Athens.

Arc is a layer-one blockchain from Circle where gas is paid in USDC and finality lands in under a second. Native stablecoin gas and sub-second settlement make payments smaller than a cent economical for the first time.

x402 revives the HTTP 402 Payment Required status code. A server answers a request with 402 and a price; the client pays and retries; the resource is returned on settlement. It turns any endpoint into a pay-per-request resource.

A nanopayment is a payment too small to have been worth making before fees: a fraction of a cent, per article, per call, per second. Circle Gateway batches many of them so each one clears gas-free.

When an AI agent answers a question it grounds the answer in sources it retrieved. Today those sources are read for free. An agent can hold a wallet and pay per call, which lets it settle a tiny fee to each source it actually used.

USDC is a fully reserved digital dollar issued by Circle. On Arc it is both the unit of account and the gas token, so a payment and its fee are denominated in the same dollar.

Glamsterdam on Hoodi Postponed. The Glamsterdam upgrade on Hoodi, previously scheduled for October 26, 2026 at 17:42:48 UTC (epoch 132,352), has been postponed. A new activation date has not been set. This update Glamsterdam Hoodi Testnet Announcement. Update — October 22, 2026: The October 26 Hoodi activation has been postponed, including the scheduled gas-limit increase to 200M. The schedule and activation instructions below ha How native transaction assertions could enforce a transaction's final outcome. The Ethereum Foundation's Trillion Dollar Security initiative has identified blind signing and transaction uncertainty as a user experience risk, and is exploring native transactio Introd

Netanyahu seeking blockchain plan to prepare for possible sanctions. Netanyahu says blockchain could help Israel prepare for possible sanctions targeting its banking system. Sen. Blumenthal seeks answers from Tether over payments to firm founded by ex-White House crypto adviser. Sen. Blumenthal said he wants answers from Tether following reports that it paid millions to a firm started by a former WH crypto adviser. Initia halts network after security incident as attacker reportedly mints tokens. Onchain data shows a $2.7 million ether transfer as Initia investigates the scope of a security incident. Phantom rolls out Kalshi prediction markets to US users, says it’s ‘confident and comfortable

I turned my TV into a Game Boy Color with a Pokemon town as my home screen. Article URL: https://twitter.com/robbietilton/status/2111936458923851923 Comments URL: https://news.ycombinator.com/item?id=50212668 Points: 7 # Comments: 3 Can we replace a $150k Looker with a bucket of HTML files?. Article URL: https://david.lequin.dev/blog/bi-software-is-dead/ Comments URL: https://news.ycombinator.com/item?id=50212320 Points: 30 # Comments: 12 Show HN: Searching for optimal strategies in a puzzle game with chance (Drop7). Sixteen years ago, I wrote a Java program which tried to pick the ideal move in a puzzle game called Drop7. On each turn, the player only has seven choices for their next move,