Say it now.
Prove it later.
Lock your prediction, promise, or bet before the outcome is known. When time's up, the seal breaks — and the truth speaks for itself.
Free to use · No credit card needed
I'll run a sub-4-hour marathon by October
c4f8a1d2...7e93b0
Reveals in
How it works
Three steps to accountability. Simple, transparent, permanent.
Seal
Write your claim — a prediction, promise, or bet. It gets locked immediately. No edits. No take-backs.
Wait
The countdown ticks. Discuss and speculate with participants, but the sealed claim stays hidden until reveal day.
Reveal
Time's up — the seal breaks. Everyone sees the original claim. Participants vote: True, False, or Partially True.
Built for accountability
Everything you need to lock claims, reveal the truth, and settle it for good.
Accountability by design
Claims are locked the moment you submit. No quiet edits, no rewriting history. What you said is what you said.
Dramatic reveal
When time's up, the wax seal breaks with animation. The original claim appears — unedited, unaltered.
Countdown to truth
Set reveal dates from hours to years. Live countdown with reminders at 30d, 7d, 1d, and 1h.
Community voting
Participants vote True, False, or Partially True. Majority decides the outcome.
Invite anyone
Bring in friends, colleagues, or the public. Share via email invite or shareable link.
Shareable receipts
Download outcome cards as images. Share to Twitter/X, WhatsApp, or embed anywhere.
SHA-256 verified
Every claim is cryptographically hashed behind the scenes, so you can verify nothing was tampered with.
For every kind of claim
Predictions, promises, bets — if you said it, seal it.
Predictions
“AI will pass the Turing test by 2027”
“Bitcoin will hit $200K this cycle”
“Remote work will become the default”
Promises
“I will run a marathon this year”
“We'll ship v2.0 by March”
“I'll learn to cook 10 new recipes”
Bets
“Lakers win the championship — loser buys dinner”
“Our startup hits $1M ARR by Q4”
“You won't last a week without coffee”
Who uses Prooflater?
Anyone who wants to put their money where their mouth is.
The Predictor
“I called it first”
Lock hot takes about tech, sports, politics, or markets. When you're right, you'll have the receipts.
The Promise Keeper
“I'll hold myself to it”
Seal personal goals, resolutions, or commitments to friends. No more quiet failures.
The Bet Settler
“Let's make it official”
Settle friendly debates with a locked claim and a community vote. No more "I never said that."
Simple pricing
Start free. Upgrade when you need more.
Pro
For power users and creators
- Everything in Free, plus:
- Unlimited active rooms & participants
- Slack bot with full AI integration
- AI-powered claim analysis
- Slack & WhatsApp notifications
- Outcome card downloads (PNG)
- Advanced voting analytics
- Priority support
Get notified when Pro launches
Teams
Hold your team accountable with sealed OKRs, commitments, and goals.
- Everything in Pro, plus:
- Team workspaces & shared vaults
- SSO / SAML
- Admin roles & permissions
- Workspace-wide Slack integration
- Analytics dashboard
- Audit log
- Dedicated support
Get notified when Teams launches
