Verify a Proof of Call
Confirm a prediction was stamped to the Bitcoin blockchain before its outcome, independently and for free, without trusting Sentari or anyone else.
Your words are hashed and anchored to the Bitcoin blockchain: free, public, and impossible to fake or backdate.
Verification re-derives the hash from the exact words, confirms the proof commits to it, and checks the Bitcoin attestation via OpenTimestamps. You can also verify the raw .ots file with the standard open-source ots tool. No website required.