Elysium bridge
Elysium mainnet (chain 99901) settles on HyperEVM (chain 999). HYPE is the native token on both networks. Contract addresses below were checked in the 2026-11-08 research snapshot.
Endpoint and plans: Elysium RPC endpoint.
Deposit HYPE
On HyperEVM, call the canonical Inbox at 0xce59f8b65ad41c9dae4c07a0571a39824bd92cff using the payable depositEth() method (selector 0x439370b1), with the HYPE amount in transaction value. The method keeps its ETH name even though the native asset is HYPE. Use chain ID 999 for this parent-chain transaction and keep enough HYPE for gas.
For a direct deposit from an externally owned account, the receiving address on Elysium is the same address as the sender on HyperEVM. Contract callers have address-aliasing rules; do not assume the same-address behavior for them. Wait for the parent receipt, then check eth_getBalance on chain 99901 for the L2 balance increase. A parent receipt alone does not establish that the L2 balance increase is visible yet.
Withdraw HYPE
The canonical withdrawal path starts on Elysium and is completed through the Outbox on HyperEVM at 0xec6b106dfa14428fe5eec2a4065a7be599f02728. After initiating the L2 withdrawal, wait for an assertion that includes it and for the challenge window, then execute the withdrawal on the parent with its proof. The Rollup contract on HyperEVM (0x508c173dfe5f737b3493195bf785d71fa76fd217) sets confirmPeriodBlocks = 483,840, counted in HyperEVM blocks, not hours: at the rate HyperEVM produced blocks on 2026-11-09 (about one per second) that is about 5.5 days. The window is not a guaranteed end-to-end completion time; assertion posting and the claim transaction come on top.
A normal L2 receipt or a finalized block does not bypass the withdrawal challenge window. Sending transactions explains receipt polling and finality. Deposits and other L1→L2 messages are only counted per batch in the DAS index; they are not indexed in its address history.
Step by step, with the wallet checks and an arrival check over RPC: bridge HYPE from HyperEVM to Elysium.