Crash insurance for your coins and stocks, and a weekly income for cash. Every price comes from a small AI model that runs on-chain on Arbitrum Stylus, so anyone can check it.
The problem In 2008, AIG had sold crash insurance that it couldn't pay out, and the US government spent $182B to cover it. That insurance was priced in private, sold without the money behind it, and valued by the banks on the other side of the trade.
What CrashLine does CrashLine is crash insurance that pays. The price is public, both sides are fully backed, and anyone can check the value.
Protect: you hold a coin or stock, such as TSLA, ETH or BTC, and buy cover for it. If the price falls below your crash line at one of the weekly checks, the cover pays you back what you lost.
Earn: the other side. You put in cash (USDG) and take on the crash risk in return for a fixed weekly income of about 0.25%.
One pot: everything a note could ever pay out is locked before it is sold, and at the end it is split between Protect and Earn. There are no margin calls and no liquidations.
Why an AI model prices it A note has 26 weekly checks and can end early, so no simple formula gives its price. To price it properly you have to simulate 262,144 possible futures, and that is too much work for a blockchain. We trained a small model (7,465 numbers, 23.9 KB, integer math only) to learn the result of that simulation. On Arbitrum Stylus the model works out a fresh price on-chain, inside the trade itself.
A price anyone can check
The model is public, so anyone can re-run the simulation and compare it with any price.
We tested it on 187,182 situations that were kept aside until the model was final. On 10,000 USDG of notes, the gap to the simulation was 2.68 USDG on average, 15.90 or less in 99% of cases and 38 at worst. The limit was 50, and we set it before the test.
If the model can't give a reliable price, it refuses instead of guessing (for example, on a check day right at the crash line).
Payouts never use the model. They follow fixed rules, so the model only prices trades you are free to turn down.
Built with Arbitrum Stylus (Rust) for the on-chain model, coins and stocks on Robinhood Chain, settled in USDG. It's live on the Robinhood Chain testnet, with 140 contract tests.