Contracts & Events

Deployed bridge contract addresses, user-facing ABIs, and event signatures for Goliath Mainnet/Ethereum Mainnet and Goliath Testnet/Sepolia.

All addresses and ABIs on this page are public and safe to hardcode into client builds. Token contract addresses may change as new assets are added — always prefer reading them from GET /bridge/limits and the token registry in Smart Contract Addresses when possible.

Mainnet Addresses

Bridge Contracts

Contract	Chain	Address
BridgeLock	Ethereum Mainnet (1)	0xa9fd64b5095d626f5a3a67e6db7fb766345f8092
BridgeMint	Goliath Mainnet (327)	0x1d14ae13ca030eb5e9e2857e911af515cf5ffff2
Relayer wallet	Both	0x90F26908Ee30C8fA6812f6BA66c050a86C8aF6cB

Ethereum Mainnet Tokens

Token	Address
ETH	Native
USDC	0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48
XCN	0xA2cd3D43c775978A96BdBf12d733D5A1ED94fb18

Goliath Mainnet Bridged Tokens

Token	Address	Decimals
ETH (bridged)	0x9253587505c3B7E7b9DEE118AE1AcB53eEC0E4b6	18
USDC (bridged)	0xC8410270bb53f6c99A2EFe6eD3686a8630Efe22B	6
XCN	Native gas token	18 (via JSON-RPC)

Testnet Addresses

Bridge Contracts

Contract	Chain	Address
BridgeLock (BridgeSepolia)	Ethereum Sepolia (11155111)	0xA9FD64B5095d626F5A3A67e6DB7FB766345F8092
BridgeMint (BridgeGoliath)	Goliath Testnet (8901)	0x2c1d218B5a97a26D144ffd12d5C813590f93FFEB

Goliath Testnet Bridged Tokens

Token	Address	Decimals
ETH (bridged)	0xEd02AA7dd3f105EDab8702D859781CAfF111324b	18
USDC (bridged)	0x4BE65Dce1D79B8728485B759eE06cC8053E824F4	6
Sepolia XCN (ERC-20)	0x7a8adc542A35c93da263A188367F4bF4c445B8E9	18

---

BridgeLock ABI (User Functions)

BridgeLock is deployed on Ethereum. External developers call deposit(...) or depositNative(...) to initiate an Ethereum → Goliath transfer, and observe the Deposit event. The Release event fires when the relayer delivers a Goliath → Ethereum withdrawal.

[
  {
    "inputs": [
      { "name": "token",              "type": "address" },
      { "name": "amount",             "type": "uint256" },
      { "name": "destinationAddress", "type": "address" }
    ],
    "name": "deposit",
    "outputs": [{ "name": "depositId", "type": "bytes32" }],
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "inputs": [
      { "name": "destinationAddress", "type": "address" }
    ],
    "name": "depositNative",
    "outputs": [{ "name": "depositId", "type": "bytes32" }],
    "stateMutability": "payable",
    "type": "function"
  },
  {
    "anonymous": false,
    "inputs": [
      { "indexed": true,  "name": "depositId",          "type": "bytes32" },
      { "indexed": true,  "name": "token",              "type": "address" },
      { "indexed": true,  "name": "sender",             "type": "address" },
      { "indexed": false, "name": "destinationAddress", "type": "address" },
      { "indexed": false, "name": "amount",             "type": "uint256" },
      { "indexed": false, "name": "timestamp",          "type": "uint64"  },
      { "indexed": false, "name": "sourceChainId",      "type": "uint64"  }
    ],
    "name": "Deposit",
    "type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      { "indexed": true,  "name": "withdrawId", "type": "bytes32" },
      { "indexed": true,  "name": "token",      "type": "address" },
      { "indexed": true,  "name": "recipient",  "type": "address" },
      { "indexed": false, "name": "amount",     "type": "uint256" }
    ],
    "name": "Release",
    "type": "event"
  }
]

Event Topic Hashes

Event	Topic 0
Deposit(bytes32,address,address,address,uint256,uint64,uint64)	keccak256("Deposit(bytes32,address,address,address,uint256,uint64,uint64)")
Release(bytes32,address,address,uint256)	keccak256("Release(bytes32,address,address,uint256)")

For Deposit.token, address(0) indicates native ETH. Any other value is an ERC-20 address.

---

BridgeMint ABI (User Functions)

BridgeMint is deployed on Goliath. External developers call burn(...) to initiate a Goliath → Ethereum transfer for bridged ERC-20s (ETH, USDC). For native XCN withdrawals use the intent API instead. The Mint event fires when the relayer delivers an Ethereum → Goliath deposit.

[
  {
    "inputs": [
      { "name": "token",                "type": "address" },
      { "name": "amount",               "type": "uint256" },
      { "name": "destinationAddress",   "type": "address" },
      { "name": "destinationChainId",   "type": "uint64"  }
    ],
    "name": "burn",
    "outputs": [{ "name": "withdrawId", "type": "bytes32" }],
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "anonymous": false,
    "inputs": [
      { "indexed": true,  "name": "withdrawId",          "type": "bytes32" },
      { "indexed": true,  "name": "token",               "type": "address" },
      { "indexed": true,  "name": "sender",              "type": "address" },
      { "indexed": false, "name": "destinationAddress",  "type": "address" },
      { "indexed": false, "name": "amount",              "type": "uint256" },
      { "indexed": false, "name": "timestamp",           "type": "uint64"  },
      { "indexed": false, "name": "sourceChainId",       "type": "uint64"  },
      { "indexed": false, "name": "destinationChainId",  "type": "uint64"  }
    ],
    "name": "Withdraw",
    "type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      { "indexed": true,  "name": "depositId", "type": "bytes32" },
      { "indexed": true,  "name": "token",     "type": "address" },
      { "indexed": true,  "name": "recipient", "type": "address" },
      { "indexed": false, "name": "amount",    "type": "uint256" }
    ],
    "name": "Mint",
    "type": "event"
  }
]

Event Topic Hashes

Event	Topic 0
Withdraw(bytes32,address,address,address,uint256,uint64,uint64,uint64)	keccak256("Withdraw(bytes32,address,address,address,uint256,uint64,uint64,uint64)")
Mint(bytes32,address,address,uint256)	keccak256("Mint(bytes32,address,address,uint256)")

---

Correlation Between Source and Destination

Use these indexed fields to correlate the two legs of a bridge transfer:

Direction	Source event	Destination event	Shared field
E → G	Deposit.depositId	Mint.depositId	bytes32 depositId
G → E	Withdraw.withdrawId	Release.withdrawId	bytes32 withdrawId

The bridge REST API does the same correlation for you — pass either identifier to GET /bridge/status and you'll get a single response covering both sides.

Verifying Source

Both contracts are verified on their respective block explorers:

• BridgeLock on Etherscan — 0xa9fd64b5...345f8092

• BridgeMint on Goliath Explorer — 0x1d14ae13...f5ffff2

The source for both is published at github.com/Onyx-Protocol (wXCN repository).

Related Docs

• Architecture — how events drive the lock-and-mint flow.

• API Reference — correlate event data with bridge operations.

• Smart Contract Addresses — full contract registry beyond the bridge.