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feat: update HyperliquidDepositHandler message #2111

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feat: update HyperliquidDepositHandler message #2111

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285ee04
feat: update `HyperliquidDepositHandler` message
dohaki Dec 16, 2025
9616140
fixup
dohaki Dec 16, 2025
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12 changes: 11 additions & 1 deletion api/_bridges/sponsored-intent/utils/common.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -20,6 +20,7 @@ import {
getFullRelayers,
getTransferRestrictedRelayers,
} from "../../../_relayer-address";
import { signDigestWithSponsor } from "../../../_sponsorship-signature";

export function getHyperEvmChainId(destinationChainId: number) {
return [CHAIN_IDs.HYPEREVM, CHAIN_IDs.HYPERCORE].includes(destinationChainId)
Expand Down Expand Up @@ -60,7 +61,16 @@ export function getDepositMessage(params: {
}) {
const { outputToken, recipient } = params;
if (isToHyperCore(outputToken.chainId)) {
return ethers.utils.defaultAbiCoder.encode(["address"], [recipient]);
const encodedRecipient = ethers.utils.defaultAbiCoder.encode(
["address"],
[recipient]
);
const hashedRecipient = ethers.utils.keccak256(encodedRecipient);
const signature = signDigestWithSponsor(hashedRecipient);
return ethers.utils.defaultAbiCoder.encode(
["address", "bytes"],
[recipient, signature]
);
}
return "0x";
}
Expand Down
3 changes: 2 additions & 1 deletion api/_bridges/sponsored-intent/utils/constants.ts
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Expand Up @@ -9,8 +9,9 @@ export const USDH_FILL_DESTINATION_GAS_LIMIT_USD = 0.25; // 0.25 USD

// TODO: Pull from @across-protocol/contracts once `HyperliquidDepositHandler`
// deployments are available upstream.
// Taken from https://hyperevmscan.io/address/0x420D76Aa59A56953C920a1D1451b0B73147334F1
export const HYPERLIQUID_DEPOSIT_HANDLER_ADDRESS =
"0x861E127036B28D32f3777B4676F6bbb9e007d195";
"0x420D76Aa59A56953C920a1D1451b0B73147334F1";
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@NikolasHaimerl NikolasHaimerl Dec 16, 2025

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I think we can also go with the across constants library, based on the info from this recent PR: https://github.com/across-protocol/contracts/blob/199910196f1f7b57b7c6e2e056260c78012b3b85/broadcast/deployed-addresses.json#L546

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@dohaki dohaki Dec 16, 2025 •
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I thought so too but the latest beta contracts version is still referring to 0x861E127036B28D32f3777B4676F6bbb9e007d195 and we need the new one

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@NikolasHaimerl NikolasHaimerl Dec 16, 2025

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I see, should we also notify the contracts team about this, or do they know anyway?
Will approve for now, but would be great if we can omit having to hardcode addresses.

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@dohaki dohaki Dec 16, 2025

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Yep, if they release a non-beta version we should be able to pull addresses from there soon


export const SUPPORTED_INPUT_TOKENS = [
TOKEN_SYMBOLS_MAP.USDC,
Expand Down
16 changes: 1 addition & 15 deletions api/_sponsorship-signature.ts
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Expand Up @@ -23,7 +23,7 @@ export const getSponsorshipSigner = (): ethers.Wallet => {

/**
* Signs a raw digest with the sponsorship signer.
* This is used for CCTP signatures where the contract expects a signature on the unprefixed hash.
* This is used for sponsored signatures where the contract expects a signature on the unprefixed hash.
* @param {string} digest The raw digest to sign.
* @returns {string} The signature string.
*/
Expand All @@ -34,17 +34,3 @@ export const signDigestWithSponsor = (digest: string): string => {
const signature = signer._signingKey().signDigest(digest);
return utils.joinSignature(signature);
};

/**
* Signs a message with the sponsorship signer.
* This adds the EIP-191 prefix to the message before signing.
* Use this when the contract expects `toEthSignedMessageHash().recover()`.
* @param {Uint8Array} message The message to sign.
* @returns {Promise<string>} The signature string.
*/
export const signMessageWithSponsor = (
message: Uint8Array
): Promise<string> => {
const signer = getSponsorshipSigner();
return signer.signMessage(message);
};
10 changes: 10 additions & 0 deletions test/api/_bridges/sponsored-intent/common.test.ts
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Expand Up @@ -17,13 +17,17 @@ import {
HYPERLIQUID_DEPOSIT_HANDLER_ADDRESS,
} from "../../../../api/_bridges/sponsored-intent/utils/constants";
import { USDC_ON_OPTIMISM, USDH_ON_HYPEREVM, USDH_ON_HYPERCORE } from "./utils";
import { signDigestWithSponsor } from "../../../../api/_sponsorship-signature";

jest.mock("../../../../api/_balance");
jest.mock("../../../../api/_hypercore", () => ({
...jest.requireActual("../../../../api/_hypercore"),
accountExistsOnHyperCore: jest.fn(),
}));
jest.mock("../../../../api/_relayer-address");
jest.mock("../../../../api/_sponsorship-signature", () => ({
signDigestWithSponsor: jest.fn(),
}));

describe("api/_bridges/sponsored-intent/utils/common", () => {
beforeEach(() => {
Expand Down Expand Up @@ -108,6 +112,12 @@ describe("api/_bridges/sponsored-intent/utils/common", () => {
});

describe("getDepositMessage", () => {
beforeEach(() => {
(signDigestWithSponsor as jest.Mock).mockReturnValue(
"0x1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef"
);
});

it("should return encoded address if to HyperCore", () => {
const recipient = "0x0000000000000000000000000000000000000123";
const outputToken = USDH_ON_HYPERCORE;
Expand Down
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