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feat(evm): add XDC Network (50) and XDC Apothem testnet (51) default assets #217

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feat(evm): add XDC Network (50) and XDC Apothem testnet (51) default assets #217

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22 changes: 22 additions & 0 deletions go/mechanisms/evm/constants.go
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Original file line number Diff line number Diff line change
Expand Up @@ -79,6 +79,8 @@ var (
ChainIDPolygon = big.NewInt(137)
ChainIDArbOne = big.NewInt(42161)
ChainIDArbSepolia = big.NewInt(421614)
ChainIDXDC = big.NewInt(50)
ChainIDXDCApothem = big.NewInt(51)

// Network configurations
// See DEFAULT_ASSET.md for guidelines on adding new chains
Expand Down Expand Up @@ -196,6 +198,26 @@ var (
Decimals: DefaultDecimals,
},
},
// XDC Network Mainnet
"eip155:50": {
ChainID: ChainIDXDC,
DefaultAsset: AssetInfo{
Address: "0xfA2958CB79b0491CC627c1557F441eF849Ca8eb1", // USDC on XDC (Circle, native)
Name: "USDC",
Version: "2",
Decimals: DefaultDecimals,
},
},
// XDC Apothem Testnet
"eip155:51": {
ChainID: ChainIDXDCApothem,
DefaultAsset: AssetInfo{
Address: "0xb5AB69F7bBada22B28e79C8FFAECe55eF1c771D4", // USDC on XDC Apothem (Circle, native)
Name: "USDC",
Version: "2",
Decimals: DefaultDecimals,
},
},
}

// EIP-3009 ABI for transferWithAuthorization with v,r,s (EOA signatures)
Expand Down
20 changes: 20 additions & 0 deletions python/x402/mechanisms/evm/constants.py
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Expand Up @@ -504,6 +504,26 @@ class NetworkConfig(_NetworkConfigRequired, total=False):
"decimals": 6,
},
},
# XDC Network Mainnet
"eip155:50": {
"chain_id": 50,
"default_asset": {
"address": "0xfA2958CB79b0491CC627c1557F441eF849Ca8eb1",
"name": "USDC",
"version": "2",
"decimals": 6,
},
},
# XDC Apothem Testnet
"eip155:51": {
"chain_id": 51,
"default_asset": {
"address": "0xb5AB69F7bBada22B28e79C8FFAECe55eF1c771D4",
"name": "USDC",
"version": "2",
"decimals": 6,
},
},
}

# V1 legacy constants are in x402.mechanisms.evm.v1.constants
Expand Down
12 changes: 12 additions & 0 deletions typescript/packages/mechanisms/evm/src/shared/defaultAssets.ts
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Expand Up @@ -105,6 +105,18 @@ export const DEFAULT_STABLECOINS: Record<string, ExactDefaultAssetInfo> = {
assetTransferMethod: "permit2",
supportsEip2612: true,
}, // Mezo Testnet mUSD (no EIP-3009, supports EIP-2612)
"eip155:50": {
address: "0xfA2958CB79b0491CC627c1557F441eF849Ca8eb1",
name: "USDC",
version: "2",
decimals: 6,
}, // XDC Network mainnet USDC (Circle, native)
"eip155:51": {
address: "0xb5AB69F7bBada22B28e79C8FFAECe55eF1c771D4",
name: "USDC",
version: "2",
decimals: 6,
}, // XDC Apothem testnet USDC (Circle, native)
};

/**
Expand Down
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