The short answerHop's structure is conservative in the right way: bonders advance funds immediately for fast transfers, while the underlying settlement runs through each rollup's canonical bridge rather than through a new validator set. It serves only Ethereum and its rollups, and depends on bonder liquidity being available.
Best forFast rollup-to-rollup transfers
Trust assumptionsweight 30%
8.0avg 7.2
Exploit historyweight 25%
9.5avg 8.8
Settlement speedweight 15%
9.0avg 8.3
Chain coverageweight 15%
6.5avg 8.1
Costweight 15%
8.0avg 8.2
this service category average across 15Score = Σ mark × weight. Recommendable to most readers, with stated caveats. Methodology.
| Criterion | Mark | What we found | Source | Checked |
|---|
| Trust assumptions | 8.0 | not sourced yet | not sourced yet | — |
| Exploit history | 9.5 | not sourced yet | not sourced yet | — |
| Settlement speed | 9.0 | not sourced yet | not sourced yet | — |
| Chain coverage | 6.5 | not sourced yet | not sourced yet | — |
| Cost | 8.0 | not sourced yet | not sourced yet | — |
What we liked, and what fell short
Liked- Ultimately settles through canonical rollup bridges
- Fast transfers between Ethereum L2s
- Clean security record since 2021
Fell short- Limited to Ethereum and its rollups
- Requires bonder liquidity to be available on the route
Why the marks landed where they did
Canonical rollup bridges are the safest way to move between Ethereum and an L2 — they inherit the rollup's own security — and they are slow, particularly the seven-day challenge period on optimistic rollups. Hop keeps the canonical settlement and removes the wait.
How the bonder model works
A bonder posts collateral and immediately sends you the equivalent amount on the destination chain, taking on the delay themselves. Behind the scenes, the transfer settles through the canonical bridge at its own pace and the bonder is reimbursed. Your funds are never secured by a new committee — the underlying trust assumption remains the rollup's own.
What can go wrong
If bonder liquidity is unavailable on your route, the transfer falls back to canonical timing. Hop's own contracts have operated without exploit since 2021. The AMM component used for cross-rollup transfers of the same asset carries ordinary liquidity risk, priced into the fee.
Cost and coverage
Roughly 0.04% to 0.1% plus a bonder fee and gas. Coverage is Ethereum and its major rollups only — no Solana, no alt-L1s.
Who should use it
Anyone moving assets between Ethereum rollups who wants speed without adding a bridge trust assumption. It is a narrower product than Across and structurally conservative in a way that deserves credit.
FAQ
What is a bonder?+
A liquidity provider who posts collateral and fronts your funds on the destination chain immediately, taking on the canonical settlement delay in exchange for a fee.
Does Hop add a new trust assumption?+
Minimally. Settlement runs through each rollup's canonical bridge, so the underlying security is the rollup's own rather than a new validator set.
What does Hop cost?+
Roughly 0.04% to 0.1% plus a bonder fee and gas, varying by route and liquidity conditions.
Which chains does Hop support?+
Ethereum and its major rollups. It does not support non-EVM chains.
