Overview

What Arrha is

Arrha is on-chain escrow that pays on results. A project locks HYPE or its own token into a Deal and names who gets paid. It sets a Term: a condition the chain can read, such as market cap held for 24 h, graduation, volume, liquidity, a HyperCore listing, an oath score, or time. When the Term is true, anyone can call settle and the payee is paid. If the deadline passes with the Term false, the payer is refunded in full.

Arrha runs on Elysium, the Hyperliquid L2 built by Kinetiq. This site and its contracts are a testnet build on Elysium Testnet, chain id 99801.

The name

Arrha is Latin for earnest money: a sum given to seal a contract, forfeited by whoever backs out. The word comes from the Greek ἀρραβών, a pledge paid in advance as proof of intent. Arrha applies the same idea with a contract that holds the pledge and a condition that decides who keeps it.

Vocabulary

Word	Meaning
Deal	One immutable escrow contract between a payer and a payee.
Term	A condition contract answering check(deal, data) with true or false.
Earnest	The funds locked in a Deal. Also the public badge showing a token's total locked.
Settle	The permissionless call that releases or refunds.
Metric mode	The Term decides. Release is automatic once it is true.
Handshake mode	For deliverables a chain cannot measure. The payee marks delivered, the payer has 72 h to accept or reject, silence means release.
Kill fee	In Handshake mode, the share from 0 to 30 % the payee keeps if the payer rejects.
Double arrha	Optional payee bond. Forfeited to the payer if the payee never delivers.
Tranches	Several Terms in series inside one Deal, each settling on its own.
Bounty	A Deal with no named payee. The first address to claim while the Term is true is paid.

Where to go next

• The problem explains why launch deals need escrow.
• How a deal works covers states and who can call what.
• Terms lists the seven official conditions.
• Create a deal opens the wizard.