Economy

Backstop architecture

At the centre of Holdline sits one contract: the settlement backstop. It takes the other side of every position, on every market, instantly. That single choice is what makes the venue always liquid.

You do not trade against a house that profits when you lose. You trade against a neutral onchain backstop that takes the other side of everything and pays every winner automatically. There is no order book to bootstrap and no depth to run out of: if the oracle can price a market, the backstop can take it, at the live mark, for a known amount. Its only margin is a published fee beside your odds.

It scales with the token, both ways

A counterparty that can lose is only as strong as its balance sheet. At mainnet the backstop is seeded with 25% of total supply, all in $HOLD. Because every payout is denominated in $HOLD, a higher token price means a deeper backstop, which clears bigger maximum payouts and more volume, which lifts the token again. Platform fees route back into backstop and trading depth, so real revenue becomes deeper payouts.

Solvency is enforced, not promised

The backstop is deliberately loss-bearing: over any short window players can win more than they stake. It stays solvent by construction.

  • ·The odds are the inverse of probability, so aggressive positions are negative on average and the neutral edge is the published spread.
  • ·A per-position ceiling of x30 and a global exposure cap bound how much the backstop can owe at once.
  • ·Every position's maximum payout is reserved from capital up front, so nothing is promised that is not already held.

All of these limits are onchain and public. You can read what the backstop can owe and recompute it.

Cash-model settlement

The backstop holds the full gross reward for every open position. On a win, capital pays that gross amount, and the profit fee and the author's cut return as cash into the revenue and royalty buckets, so the books balance exactly on every settlement:

deposit + fromCapital == player + revenue + authorCut

To the wei, on every settlement. Nothing is netted out of sight.