Read the Chain
Write real viem against a real EVM running in your tab. Balances, contracts, events and blocks — the code you write here works unchanged against a real node.
By the end
You can query any Avalanche address and contract with viem, decode its event history, and fold the result into a wallet report.
- 1
Your first query
Two lines of viem and you are reading a chain. The client is real, the chain is real, and it lives in this tab.
5 min - 2
Balances, and the wei problem
Every balance on chain is an integer of the smallest unit. Getting that wrong is the classic off-by-eighteen-zeroes bug.
6 min - 3
Reading a contract
A contract call is just a message to an address. The ABI is what turns that message into a function name you can type.
7 min - 4
Events are the chain’s history
State tells you where things stand. Logs tell you how they got there, and they are the only readable record of it.
7 min - 5
Walking the blocks
Height, timestamps and transaction lists. Enough to answer "when did this happen" without an explorer.
6 min - 6
Build a wallet report
Everything from this track pointed at one address, producing the shape of thing a real product actually ships.
8 min