You asked about Crypto / Web3
71 people built something like it. 0 are gone.
That is 0% of the ones whose fate we could settle, against 23% across the whole register.
| Launched | What it was | Today |
|---|---|---|
| 2014-06-01 | Protocol Labs makes internet protocols: IPFS, Filecoin, and more. · protocol.ai | still up |
| 2021-01-01 | Tools & infra to build and scale high-quality blockchain applications. · quicknode.com | still up |
| 2021-06-01 | YCARQ The global financial platform for affluent consumers in the Americas. · arqfinance.com | still up |
| 2018-01-01 | Security auditing for Web3 · quantstamp.com | still up |
| 2018-01-01 | YCOpenSea This isn't just a marketplace; we're shaping the future of digital… · opensea.io | still up |
| 2018-01-01 | The gold standard in cryptocurrency portfolio tracking and taxes · cointracker.com | still up |
| 2014-06-01 | YCSFOX Crypto-currency trading platform. · sfox.com | still up |
| 2019-06-01 | Your global dollar account powered by stablecoins · cocowallet.app | still up |
| 2020-06-01 | YCNotabene The Notabene platform is the trust layer for global money movement. · notabene.id | still up |
| 2014-06-01 | Hiro Systems build developer tools for Bitcoin L1 and the Stacks L2 · hiro.so | still up |
| 2022-06-01 | YCCODEXA AI Agent runs the entire international trade operation · codexa.com.br | still up |
| 2020-01-01 | Crypto Exchange and Payment API Gateway · tiendacrypto.com | still up |
| 2023-01-01 | YCLittio Dollar banking for people in Latin America · littio.co | still up |
| 2024-01-01 | YCCleva Global neobank for emerging markets · getcleva.com | still up |
| 2018-06-01 | Cryptocurrency infrastructure for Africa. · helicarrier.studio | still up |
| 2019-06-01 | YCRainbow Open-source, design centric software for interacting with blockchains · rainbow.me | still up |
| 2021-01-01 | YCSpruceID SpruceID lets users control their data across the web. · spruceid.com | still up |
| 2017-01-01 | Decentralised broadband connectivity. · dabba.com | still up |
| 2022-06-01 | YCPing The global neo-bank for contractors and freelancers · letsping.com | still up |
| 2022-06-01 | YCBitstack All things money, with better money · bitstack-app.com | still up |
| 2022-01-01 | YCUpBanx Brex for D2C Brands and Content Creators in Indonesia · upbanx.com | still up |
| 2022-01-01 | YCCypher Crypto Neo-Bank (WhatsApp moment for bank accounts) · cypherhq.io | still up |
| 2017-01-01 | Request is a payment request technology & an ecosystem of apps · request.network | still up |
| 2022-01-01 | YCApollo Payments & Loyalty Infrastructure · apollofirst.xyz | still up |
| 2022-06-01 | Infrastructure powering stablecoin and digital finance · primevault.com | still up |
| 2025-06-01 | YCRuvo The Global Dollar App for Brazil · ruvo.com | still up |
| 2019-01-01 | YCMudrex India's largest crypto investing paltform · mudrex.com | still up |
| 2022-01-01 | YCArgo A social streaming platform powered by creators and fans · argo.la | still up |
| 2021-06-01 | The Trading Terminal For Crypto Traders · gethypertrader.com | still up |
| 2022-01-01 | YCPoko Seamless Fiat Payments for Web3 · pokoapp.xyz | still up |
| 2018-06-01 | YCOWNY Manage capital, investors & banking in one place. · owny.com | still up |
| 2022-06-01 | YCRio LATAM’s largest stablecoin FX and liquidity provider · rio.trade | still up |
| 2025-01-01 | YCBlindPay Stablecoin API for global payments · blindpay.com | still up |
| 2022-01-01 | Accelerate verifiable computing · argument.xyz | still up |
| 2021-01-01 | YCFlux Cross border Payments infrastructure for internet businesses and… · iflux.app | still up |
| 2021-06-01 | YCCoinrule Coinrule Automates Your Crypto and Stock Investments · coinrule.com | still up |
| 2023-01-01 | YCKoywe Crypto On and Off Ramp for Latam · koywe.com | still up |
| 2019-06-01 | YCLofty Building the NASDAQ for Real Estate. · lofty.ai | still up |
| 2009-06-01 | YCListia Mobile marketplace for trading used goods. · listia.com | still up |
| 2023-01-01 | YCZeroDev Account abstraction wallets as a service · zerodev.app | still up |
| 2024-06-01 | YCBlaze Agentic Finance for your Life and Business · blaze.money | still up |
| 2026-06-01 | AI cybersecurity for financial institutions' digital assets · verdictmachine.com | still up |
| 2022-06-01 | YCStackup Stackup helps businesses manage their crypto assets. · stackup.fi | still up |
| 2022-01-01 | YCSoon Automated sweep account, invest without the stress of speculating · soon.app | still up |
| 2022-01-01 | Modern Investment Product for 100m underserved Europeans · pluto.markets | still up |
| 2022-06-01 | Palantir for Web3 · blockscope.co | still up |
| 2022-06-01 | YCHype Trade memecoins · hype.meme | still up |
| 2026-06-01 | YCArbital The social trading app for stocks, memes, and perps · arbital.xyz | still up |
| 2023-01-01 | YCTheya The world's simplest Bitcoin self-custody solution · theya.us | still up |
| 2022-01-01 | YCBunkyr Zero-Knowledge security without seed phrases or backup codes · bunkyr.com | still up |
| 2021-01-01 | YCCamp A Nouns DAO governance client · nouns.camp | still up |
| 2025-09-01 | Trade Anything · freeportmarkets.com | still up |
| 2022-06-01 | YCLyra Spend crypto anywhere online · paywithlyra.com | still up |
| 2021-06-01 | YCFilta The Face Filter NFT Marketplace · getfilta.com | still up |
| 2015-01-01 | Censorship resistant democracies. · democracy.earth | still up |
| 2025-01-01 | YCAxiom Trade memecoins, perpetuals, and earn yield. · axiom.trade | still up |
| 2026-09-01 | YCORO AI Continuously improving evals for agentic commerce · oroagents.com | still up |
| 2022-06-01 | YCEthosX The protocol for derivatives on blockchains · ethosx.finance | still up |
| 2024-01-01 | YCPolar The smarter way to manage USD earnings globally · polarfi.com | still up |
| 2024-09-01 | YCCharm Charm is the universal payments app — send money to anyone. · charm.cash | still up |
How this compares
The register re-probes every domain it holds. Some that answered last month stop answering. We send that list — what went quiet, and what it was — once a month. Nothing else.
How this was made. Show HN entries are every post from 2021 to 2023 with at least five points that linked to its own domain; code hosts and free hosting are excluded, because a repository outlives the effort behind it. Product Hunt entries needed 100 votes — a far higher bar, so they are the promoted top slice rather than a like-for-like sample. Both are judged by asking the domain whether it still answers: gone means it no longer resolves, refuses the connection, serves a parking page, or says plainly that it shut down. An HTTP error is not counted as gone — a server answering 404 is one somebody still pays for, and an audit of 25 gone-calls found two such sites alive with only a moved homepage. Y Combinator entries use the status YC publishes itself, which is why only those can say acquired. Squatted domains — a lapsed name now serving somebody else's site — are not detected, so these figures run slightly low.