Blockscout PRO API · Use Case

Multichain Wallet Portfolio Tracker

One address, six chains, unified history. Native transactions, token transfers, and current holdings, pulled from the same path template with a different chain ID in the URL: api.blockscout.com/{chain_id}/api/v2/...

Demo address: vitalik.eth. Replace with any wallet to see the same view. Get an API key →
Note: The Blockscout PRO API blocks browser-origin requests by default. Direct fetch() from this page will hit CORS errors. For your own integration, proxy requests through a backend or serverless function (Cloudflare Worker, Vercel Edge, Lambda). The data shown below is a baked-in snapshot to demonstrate the UI; the article alongside this dashboard has the working server-side request pattern.
Address
0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045
Chains active
6
Total txs
2,672
Token transfers
8,852
Unique tokens
100

Per-chain summary

GET /{chain_id}/api/v2/addresses/{address}
Chain Native balance Transactions Token transfers Unique tokens

Current token holdings

GET /{chain_id}/api/v2/addresses/{address}/tokens

Unified timeline

/transactions + /token-transfers · merged · sorted desc