Observed arrival · 2026-10-28
MarkMyCall: a public scorecard for crypto price calls
It lets users submit X posts predicting crypto prices, then says it checks each call against exchange data at its deadline and records the result.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Readers auditing public crypto price predictions
- Worth noticing
- Near misses within 1% and disagreements between Coinbase and Bitstamp are routed to a person rather than the scoreboard.
Field notes
Each submission is parsed for the claim, target, and deadline, then checked against Coinbase candles with Bitstamp required to agree. Touch-price claims are checked hourly and may resolve early; other calls wait for the deadline. Disagreements and near misses within 1% are sent to a human reviewer. The page says corrections appear as new entries rather than edits, and its current sample leaderboard and receipts use invented accounts and outcomes.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
◎NicheUnusually specific use
ƒJavaScriptBrowser-side code central
One card from the complete issue