First Crossing

Purpose

A new spot pair opens with an empty order book. Holders who want to trade on HyperCore from the first block need their tokens on the Core side before the book opens. Bridging them one by one after listing takes time and leaves the first minutes to whoever crossed first.

The First Crossing collects holders' tokens during the Rite, in escrow, so they can cross together when the listing settles.

Flow

1. A Pot enters In Rite.
2. Holders approve the Pots contract and call joinCrossing(potId, amount). Tokens are escrowed. The contract checks it received exactly amount, so fee-on-transfer tokens are rejected.
3. The Rite ends.
   • If it settles, each holder calls claimCrossing(potId). The contract emits Crossed(potId, holder, amount).
   • If it fails, the Pot returns to Open and each holder calls withdrawCrossing(potId) to get the tokens back.

Joining is possible only while the Pot is In Rite. The button "Join the First Crossing" appears on the Pot page during that phase.

What is simulated on testnet

Part	Testnet	Mainnet (planned)
Escrow of tokens during the Rite	Real, in the Pots contract	Same
Refund after a failed Rite	Real	Same
Delivery after a successful Rite	claimCrossing returns the tokens to the holder on Elysium and emits Crossed	Tokens delivered on HyperEVM to the same address, ready to move to HyperCore through the deposit wallet

The mainnet delivery depends on the Elysium bridging path to HyperEVM and on the HyperCore deposit wallet. On HyperCore, amounts below the token's Core wei precision are burned when moved into Core; the testnet does not simulate this rounding.

Things to know

• The crossing is optional. Holders who skip it can bridge later.
• Crossing deposits are not part of the Pot total. They do not affect eligibility or fees.
• Elysium withdrawals to HyperEVM go through a challenge period. The Elysium documentation does not publish its duration yet. See Risks.