flare-integration-kit/examples/chain-config.json at master · FlareForward/flare-integration-kit · GitHub

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{
  "chain": {
    "name": "Flare",
    "chainId": 14,
    "networkType": "mainnet",
    "consensus": "Avalanche Snowman (rapid probabilistic finality, deterministic in practice)",
    "blockTimeSeconds": 1.8,
    "evmCompatibility": "full",
    "addressFormat": "EVM (0x + 40 hex, EIP-55 checksummed)"
  },
  "nativeToken": {
    "name": "Flare",
    "symbol": "FLR",
    "decimals": 18,
    "wrappedAddress": "0x1D80c49BbBCd1C0911346656B529DF9E5c2F783d",
    "wrappedSymbol": "WFLR"
  },
  "rpc": {
    "mainnet": {
      "public": [
        {
          "url": "https://flare-api.flare.network/ext/C/rpc",
          "provider": "Flare Foundation",
          "rateLimit": "moderate",
          "archive": false,
          "notes": "Official public endpoint"
        },
        {
          "url": "https://rpc.ankr.com/flare",
          "provider": "Ankr",
          "rateLimit": "moderate",
          "archive": false,
          "notes": "Good fallback"
        },
        {
          "url": "https://flare.public-rpc.com",
          "provider": "Public RPC",
          "rateLimit": "moderate",
          "archive": false,
          "notes": "Community endpoint"
        }
      ],
      "websocket": [
        {
          "url": "wss://rpc.ankr.com/flare/ws",
          "provider": "Ankr",
          "notes": "WebSocket for event subscriptions"
        }
      ],
      "paid": [
        {
          "provider": "Ankr Premium",
          "url": "https://rpc.ankr.com/flare/<API_KEY>",
          "sla": "99.9%",
          "rateLimit": "high",
          "archive": true
        }
      ]
    },
    "testnet": {
      "name": "Coston2",
      "chainId": 114,
      "public": [
        {
          "url": "https://coston2-api.flare.network/ext/C/rpc",
          "provider": "Flare Foundation"
        }
      ],
      "faucet": "https://faucet.flare.network/coston2"
    }
  },
  "explorer": {
    "mainnet": {
      "ui": "https://flarescan.com",
      "api": "https://api.flarescan.com/api",
      "templates": {
        "address": "https://flarescan.com/address/{address}",
        "transaction": "https://flarescan.com/tx/{txHash}",
        "block": "https://flarescan.com/block/{blockNumber}",
        "token": "https://flarescan.com/token/{tokenAddress}"
      }
    },
    "testnet": {
      "ui": "https://coston2.testnet.flarescan.com",
      "templates": {
        "address": "https://coston2.testnet.flarescan.com/address/{address}",
        "transaction": "https://coston2.testnet.flarescan.com/tx/{txHash}"
      }
    }
  },
  "confirmations": {
    "recommended": {
      "depositDetection": { "confirmations": 3, "timeSeconds": 5.4, "notes": "Display pending deposit to user" },
      "standardExchange": { "confirmations": 10, "timeSeconds": 18, "notes": "Credit user balance — recommended default for production" },
      "veryConservative": { "confirmations": 20, "timeSeconds": 36, "notes": "High-value deposits" }
    },
    "notes": "Flare uses Avalanche Snowman consensus with rapid probabilistic finality that behaves deterministically in practice. No deep reorgs observed on mainnet. Most exchanges treat 10 confirmations as final settlement."
  },
  "gas": {
    "nativeToken": "FLR",
    "estimationMethod": "eth_estimateGas + eth_gasPrice (standard EVM)",
    "eip1559": false,
    "typicalGasPriceGwei": "25-75",
    "typicalTransferGas": 21000,
    "typicalErc20TransferGas": 65000,
    "notes": "Gas prices in gwei are higher than Ethereum but FLR price is much lower, so USD cost per transaction is very low (< $0.01 for simple transfers)."
  },
  "tokenStandard": "ERC-20 (standard OpenZeppelin implementation)",
  "commonFailureModes": [
    "RPC rate limiting on free endpoints during high activity",
    "Gas price spikes during FTSO reward claim epochs (every 3.5 days)",
    "WebSocket disconnections on free providers (reconnect logic needed)"
  ],
  "reorgExpectations": "Deterministic finality — reorgs are not expected. No known reorgs on Flare mainnet to date."
}