Arbitrum
| Chain id | 42161 (key arbitrum in /v1/chains/{chain}/*) |
| Gas | ETH (zero address in the API; WETH 0x82aF49447D8a07e3bd95BD0d56f35241523fBab1) |
| Blocks | ~250 ms |
| Stable anchors | USDC 0xaf88d065e77c8cC2239327C5EDb3A432268e5831 and USDT0 0xFd086bC7CD5C481DCC9C85ebE478A1C0b69FCbb9 (6 decimals); the bridged USDC.e counts as a dollar too |
| Explorer | arbiscan.io |
| Chord index since | 2026-10-06 20:00 UTC |
Chord contracts
Section titled “Chord contracts”The same proxies as every EVM chain Chord routes on: router 0x1b1fee89a381e595fe6536b99ba91f3e16e9601a, fee collector 0x6c66229675fd9ceda9a9b2ea2bd983b3d8255834, adapter registry 0x6cf25d2af1a58d7094b0ac253ae616a8e1f2ea3f. Adapters come with every quote. Protocol fee: 5 bps by default, 0 on the dollar stables and WETH.
Venues
Section titled “Venues”Routing covers Uniswap V2, V3 and V4, PancakeSwap V3, SushiSwap V2 and V3, Camelot V3, Metric and WOOFi. The data index covers every venue on the chain; GET /v1/chains/arbitrum/venues is the live list with share. Common ids: uniswap_v3 · uniswap_v4 · pancake_v3 · camelot_v3 · sushi_v3 · sushi_v2 · camelot_v2 · uniswap_v2 · ramses_v2 · pancake_v2.
Endpoints
Section titled “Endpoints”| Need | Call |
|---|---|
| Freshness and coverage | GET /v1/chains/arbitrum/status |
| Chain totals, venue share, hourly and daily | GET /v1/chains/arbitrum/overview |
| Every token traded in 24h | GET /v1/chains/arbitrum/tokens |
| One token’s hourly tape and venue split, its swaps | GET /v1/chains/arbitrum/token/{address}, …/token/{address}/trades |
| Search | GET /v1/tokens/search?q=&chain=42161 |
| Candles | GET /v1/candles?chain=42161&token= |
| A wallet’s swaps and PnL | GET /v1/chains/arbitrum/wallet/{address}, …/wallet/{address}/trades |
| Quote and swap | GET /v1/quote?chain=42161…, POST /v1/swap { chain: 42161 }, native ETH goes in value |
There are no top-wallet, holder or liquidity boards for Arbitrum yet.