The most absurd moment in crypto onboarding: someone wins free tokens, opens their wallet to claim them, and gets told they need to buy ETH first to pay gas. For a newcomer that's a dead end — the whole point was that they didn't have crypto yet. Gasless claiming fixes this, and it's worth understanding how, because 'we pay your gas' can be done safely or dangerously.
The naive way (don't do this)
A project could just send tokens to any address that asks. But then bots ask a million times, and the project has no proof any recipient did anything real. Free distribution with no verification is just a faucet for farmers.
How DropHood does it: verify first, then relay
- You prove eligibility first — you're physically inside the drop zone, and you know the on-site code. The backend verifies this off-chain.
- The verifier signs an EIP-712 voucher: a cryptographic permission slip naming your wallet, the campaign, and the amount, with a short expiry.
- A relayer wallet submits the claim transaction on your behalf and pays the gas. The smart contract checks the voucher's signature and enforces one claim per wallet on-chain.
- Your reward arrives, plus a Proof of Hood NFT — and you never touched ETH.
Why the voucher matters
The relayer isn't trusted to decide who gets paid — the contract only accepts claims carrying a valid signature from the platform's verifier, and each wallet can claim exactly once, enforced at the contract level. Even if someone replayed a voucher, the on-chain one-claim-per-wallet guard rejects it. The gas sponsorship is a convenience layer; the security lives in the signature and the contract.
What this unlocks
Gasless claiming means the next person at your event with zero crypto history can install a wallet, walk into the zone, and hold their first token two minutes later. That's the actual onboarding story chains like Robinhood Chain need — no bridge, no exchange account, no gas anxiety.