How it works

Cosign means getting behind someone.

A builder posts what they’re making and what they need: a co-founder, capital, or both. Everyone else can cosign it. There are three ways to do that, and none of them ask orangecheck to hold your money or your keys.

Join

Co-founders

You want to help build it. Express interest as a co-founder. When the founder is interested too, a private intro opens and you take it from there: roles, equity, commitment, all on your own terms, off-platform.

Back

Backers and patrons

You want to put capital or weight behind it. Back the project. Any sats settle peer-to-peer over Lightning, straight to the founder’s own address. orangecheck is never in the money flow and holds nothing.

Zap

Everyone

You just want to say “I’m behind this.” Send a small Lightning tip as a lightweight gesture of conviction. No commitment: the warmest way to get behind a builder.

What we promise

Your account is your Bitcoin identity

No password, no résumé, no LinkedIn. You sign in with your orangecheck account, the same one on every orangecheck site. That’s what keeps the room full of real people instead of noise.

Start with an email. The badge is optional.

Non-technical founders welcome. Get in with just an email and a one-time code. Later, if you want, prove control of a Bitcoin address to earn a verified Bitcoiner badge. It’s an upgrade, never a gate.

One thing we’re not

OC Cosign is not a securities platform. Joining a team and backing a builder with sats are acts of support, not a regulated investment offering. Any equity conversation happens directly between you and your co-founder, off OC Cosign. We keep it simple, human, and non-custodial on purpose.

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