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Base

EVM Layer 2 / Chain ID 8453

Base is a secure, low-cost, developer-friendly Ethereum Layer 2 built by Coinbase, powered by the OP Stack.

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Quick Facts

Networks 2

Runtime EVM

Chain ID 8453

Real-time Yes

Data tables 5

Category Layer 2

Networks

base-mainnet

Real-time EVM mainnet 5 tables

base-sepolia

EVM testnet 5 tables

Available Data

blocks

Block headers with timestamps, gas usage, miner info, and consensus data.

transactions

All on-chain transactions with sender, receiver, value, gas, and input data.

logs

Event logs emitted by smart contracts — the primary source for tracking DeFi, NFT, and token activity.

traces

Internal transactions and call traces showing the full execution path of each transaction.

state_diffs

State changes per transaction — storage slot modifications, balance changes, and nonce updates.

Quick Start

1curl --compressed -X POST \
'https://portal.sqd.dev/datasets/base-mainnet/stream' \
-H 'Content-Type: application/json' \
-d '{
    "type": "evm",
    "fromBlock": 0,
    "toBlock": 100,
    "fields": {
      "block": {"number":true,"timestamp":true},
      "transaction": {
        "hash": true,
        "from": true,
        "to": true,
        "value": true
      }
    },
    "transactions": [{}]
  }'

base-mainnet/stream

EVM · blocks 0–100

Start building with Base

Access Base data through the SQD Portal — free tier available.

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