Arbitrum One

This page lists what Farbeam reads on Arbitrum One. Live values are on the Arbitrum One data page. The API returns the same facts from Get a chain.

#What is indexed

ERC-20 Transfer logs of the four tokens below, at $100,000 or more. A poll reads up to 200 blocks and the cursor catches up. See indexing. Native ETH is not stored.

#Curated tokens

The curated tokens page explains the list and its prices.

#Sources

#Measured values

These figures are a snapshot from the API at 2026-11-04T19:33:40.038Z UTC. They are examples, and they change on every poll. They are not targets.

#Quirks

• Many blocks per poll. The chain produced about 60 blocks between reads in the measurement above, taken on 2026-11-04 UTC. The log scan was changed after that measurement and now reads up to 200 blocks per poll. scan_lag_blocks in Status shows how far the cursor is behind the head.
• Token symbol in reports. A token report reads the on-chain symbol, so Arbitrum USDT shows as USD₮0. Rows and /chains use the curated symbol USDT. Match on the address.
• **gas_used_ratio is not useful here.** The block gas limit reported on this chain was 1125899906842624, so the ratio is close to zero (about 1e-10 in the capture). Do not read it as an idle chain.
• Four tokens. There is no DAI entry on Arbitrum in the curated list.
• Native USDC. The listed USDC is the native contract 0xaf88...5831. The bridged USDC.e is not curated, so its transfers leave no row.
• Native ETH is not indexed. Only WETH transfers appear.

#Try it

curl -s "https://farbeamlabs.com/api/v1/chains/arbitrum"

const res = await fetch("https://farbeamlabs.com/api/v1/chains/arbitrum");
const { data } = await res.json();
console.log(data.status.status, data.status.head, data.tokens.length);

import requests

data = requests.get("https://farbeamlabs.com/api/v1/chains/arbitrum", timeout=30).json()["data"]
print(data["status"]["status"], data["status"]["head"], len(data["tokens"]))

A rule for this chain, from the Beamline examples style: chain == "arbitrum" and token == "WETH" and amount >= 100.