deepidea

Pricing short usernames on defi.io: $12,999 for one letter, $29 for four, plus two premium tiers by meaning. The hard part wasn't the numbers. It was deciding which names shouldn't cost anything.

In 2018 Stripe switched off bitcoin payments; by 2026 it had bought Bridge for $1.1 billion, bought the wallet company Privy, incubated the payments chain Tempo, applied for a federal trust charter and co-launched the OUSD stablecoin with Visa, Mastercard, Coinbase and Shopify. This book follows that path chapter by chapter, with 35 original charts, and argues that Stripe is not chasing a crypto trend: it is replacing rented pipes with pipes of its own.

In 2017 Larry Fink called bitcoin an "index of money laundering." By 2026 BlackRock managed $65 billion in stablecoin reserves, and DTCC had connected $114 trillion in custody assets to a blockchain. This book follows regulators, asset managers, banks, exchanges, brokers, payment networks and tech giants as they move on-chain. The core finding: the giants did not embrace crypto, they plugged it into their own pipes. 12 chapters plus an introduction, 47 original charts, sourced to filings.

1,000+ emails, zero commands typed. I just talked to Claude Code in plain language, and it drove HEY's official CLI: 86 promos trashed, 20 marketing senders screened out for good, 2 phishing emails caught, in about an hour.

In an industry without rules, is standing on the side of the rules a burden or a moat? This book follows Coinbase from 2012 to 2026: a co-founder split over custody, Mt. Gox, the 2017 meltdown, USDC, the direct listing, FTX, the SEC lawsuit, Base, politics, Wall Street's ETFs and the S&P 500. Each chapter turns on one decision: the options, the cost, and whether it was judgment or luck. 38 original charts and twelve principles for founders.

With Cloudflare's official MCP connected to Claude Code, domain health checks, bulk DNS and security changes, email troubleshooting, log queries and Worker deployments each take one sentence. It also has a blind spot: nameserver changes made at your registrar are invisible to Cloudflare.

Deposit dollars in Robinhood Earn and you earn about 7% a year. Who pays for it? Using onchain data from Robinhood Chain's first four months, this book finds that about 43% comes from Robinhood's own subsidy, 37% from Ethena's, and only about a fifth from real borrowing demand. It covers stablecoins, lending vaults, stock tokens, LPs, perpetuals and launchpad tokens, with a yield equation, a risk ledger and a ten-minute weekly watchlist. No price calls. Not investment advice.