1,247 eBay reviews. 87 Reddit trades. 42 Discord vouches. And you're still a stranger when you sit down at a card show table.
That gap between the reputation you've earned and the reputation people can actually see is the reason at least eight startups have tried to build portable reputation since 2009. They raised over $10 million combined. They had 4.5 million users at peak. Almost all of them are dead.
We studied every single one before we wrote a line of code for Repcheck. Here's what we found.
The Idea Everyone Has
"What if your reputation followed you across platforms?"
It's the obvious question. Anyone who's traded on eBay, then tried to sell in a Discord DM, has felt the pain. Your 800 positive reviews don't exist outside of eBay. You're starting from zero every time you show up somewhere new.
The concept has a name in startup circles. Trust passport. Reputation graph. Universal trust score. The pitch decks all look the same. The graveyard is full of them.
The Dead
TrustCloud launched in 2012 out of 500 Startups. Roughly $600K in funding. They built "TrustCards" and "TrustScores" for the sharing economy. Partnered with Rover.com. The founders ate ramen and peanut butter for four years. Their own words. The domain is dead. The founder is at a stealth AI startup now. A completely different company called TrustCloud.ai (compliance software, $37M raised) took over the name. The original never made it.
Traity was the biggest swing. $4.7 million Series A in 2014, led by Active Venture Partners with Horizons Ventures and Bertelsmann. They had 4.5 million users from an early Facebook integration. TechCrunch covered the raise. They partnered with Munich Re for insurance underwriting. Listed as out of business by November 2020. The founder runs a longevity health coaching company now.
Credo360 launched on Hacker News in September 2017 with 1,200 users from Reddit buy/sell/trade communities. An open reputation system. Crowdsourced credit scores. Confirmed-transaction reviews only. It was a good idea built for exactly the right audience. Deadpooled. Their domain is now a gambling site called KONGTOTO. You can't make this up.
Deemly was a Danish company that used NLP to analyze reviews across sharing economy platforms. Nearly $1 million in funding. Joined the EU Collaborative Economy Forum alongside Airbnb and Uber. Headcount dropped to two employees by 2018. The founder left. She's a Chief of Staff at an events company now.
Reputationaire got $220,000 in IBM cloud credits. Oxford-educated founder. Joined a blockchain incubator in Melbourne. Their website still says "Be one of the first to get a Reputationaire vault." It has said that for eight years. They are still pre-launching.
Karma built a browser extension in 2013 that generated a score out of 100 from your connected accounts. Gizmodo gave it a brutal review. The reviewer got 77/100 despite having 100% positive eBay feedback since 1999. The more accounts you connected, the higher your score. It was measuring data surrender, not trust. Site is dead.
eRated raised $1.7 million in 2016 out of Techstars London. Was a certified eBay application. They pivoted. Crunchbase now lists them as Silverback.ai. The reputation product is gone.
That's at least $10 million in venture funding. 4.5 million users at peak. Years of work by smart, funded teams. Zero survivors in the portable reputation space.
The Survivors
Two things survived. Neither looks like what the dead startups were building.
HeatWare has been alive for 25 years. Founded in 1999. 85,000 users. Over 700,000 transactions. Completely free. Funded by donations. Still actively developing features as of late 2025.
How did HeatWare survive when everything else died? They built forum plugins. vBulletin. phpBB. Instead of asking users to visit a separate website, HeatWare embedded reputation directly where trading was already happening. AnandTech. HardForum. Reddit. Head-Fi. The trust score appeared next to your username in the thread. No extra steps.
The other survivor is eBay's feedback system. 25+ years old. Hundreds of millions of reviews. Deliberately non-portable. eBay has zero incentive to let your reputation leave their platform. Your 1,200 reviews are their moat.
One survived by embedding. The other survived by locking you in. Both teach the same lesson. Distribution is everything.
Why They All Failed
Five walls. Every dead startup hit at least three of them.
Cold start. Nobody wants to create a profile on a trust platform that nobody else uses. You can't prove trust to people who aren't checking. The only startup that partially solved this was Traity, by piggybacking on Facebook's 4.5 million users. When that integration lost steam, the users vanished.
Platform resistance. eBay, Airbnb, and Amazon have no reason to make reputation portable. Your locked-in reviews keep you on their platform. Every startup that tried to "aggregate" reviews from major platforms ran into API restrictions, rate limits, or outright blocks.
Zero willingness to pay. Consumers won't pay for a trust profile. HeatWare proved this. They've been donation-funded for 25 years. If the only trust platform that survived couldn't charge users, that tells you something about the business model.
The trust paradox. You need people to trust the trust platform. Traity had 4.5 million users and a TechCrunch feature and a Munich Re partnership. Still died. Brand recognition doesn't solve the trust paradox. Usage does.
No distribution at the moment of decision. This is the killer. Every dead startup built a destination. A website you visit to check someone's reputation. But the moment you need to check trust isn't when you're browsing a reputation site. It's when you're in a Discord DM about to send $500 for a card. Or standing at a convention table. Or reading an Instagram story. If the trust check isn't available at that exact moment, it doesn't exist.
What We Learned Before Building
We registered repcheck.me in October 2023. We didn't ship the product until February 2026. That's not because the technology was hard. A review system and a trust score are straightforward engineering problems.
We spent that time studying the graveyard. Reading the postmortems. Tracking what HeatWare did right. Figuring out why 4.5 million users on Traity still wasn't enough.
The conclusion was simple. Technology was never the problem. Distribution was.
Why Repcheck Is Built Differently
We didn't build a website and hope people visit it. We built tools that show up where trust decisions actually happen.
Discord bot. Live. Type `repcheck @user` in any trading server with the bot installed. The trust score appears in the chat. No tab switching. No separate login. The check happens where the deal happens. This is the HeatWare playbook. Embed where trading is already happening.
Browser extension. Live. Shows seller reputation on eBay, Whatnot, and TCGPlayer listings without leaving the page. The trust check happens at the moment of decision.
Convention QR cards. Physical cards you hand to buyers at shows. They scan, they see your full reputation profile. Works offline in the sense that the trust check starts with a piece of cardboard, not an app download.
Niche-first. We're not building "portable reputation for everyone." That's what killed Traity and TrustCloud. We're building portable reputation for collectors and traders. Pokemon cards. Sports cards. Art slabs. PEZ dispensers. A specific community with a specific trust problem.
AI seller research. Repcheck doesn't just store reviews. It actively researches sellers across platforms. eBay feedback history. Whatnot sales. TCGPlayer presence. The profile builds itself.
The Honest Assessment
We're not pretending the graveyard doesn't exist. The teams that built TrustCloud, Traity, Credo360, and the rest were smart people with real funding solving a real problem. Several had better pedigrees and more capital than we do.
What we have is their lessons and a distribution thesis. A Discord bot that's live in trading servers. A browser extension that shows up on marketplace listings. A niche community that actually needs this.
Whether that's enough is unproven. Traity had 4.5 million users and still died. HeatWare survived 25 years with 85,000 users and a forum plugin. The difference wasn't scale. It was distribution.
We're betting on distribution.
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Check your reputation: repcheck.me
Claim your profile: repcheck.me/signup
Add the Discord bot: repcheck.me
Convention vendors: Generate your QR card from your dashboard.