Reading a single on-chain move

Transaction hash, sender, receiver, token and value: how to check any whale move yourself on Etherscan.

Lesson 2 of 10 · 7 min read · All lessons

Every move is a public record

Each Ethereum transaction has a transaction hash, a unique ID you can paste into a block explorer such as Etherscan. The record shows when it happened (block time), who sent it, who received it, which token moved and how much.

That public record is the raw material for everything on Deep Blue Alpha. Our job is to decide which records involve tracked whales and what kind of move each one is.

From raw transfer to labeled move

A transfer says “address A sent 500 LINK to address B”. On its own that is ambiguous. If address B is a known exchange deposit address, the move is an exchange deposit. If B is a DEX pool or router, it is part of a swap. The counterparty decides the label.

The USD value is the token amount times the price at that time. Prices pass plausibility checks before they’re stored, but values for thinly traded tokens are approximations.

Check, don’t trust

The habit worth building: when a number surprises you, open the transaction. Confirm the sender, the receiver and the amount on the explorer. Large surprises are sometimes real and sometimes a labeling or pricing quirk; the raw record settles it.

Try it on a live page

  1. Open the live feed and pick any move above $100K.
  2. Open its transaction on Etherscan (the hash link).
  3. Find the sender, receiver, token and amount on Etherscan and confirm they match the feed. Who was the counterparty?
Open Live whale feed →

Check yourself

1. What uniquely identifies a transaction?

The hash is the transaction’s unique ID on the chain.

2. What decides whether a transfer is labeled an exchange deposit or a swap?

A known exchange address makes it an exchange move; a DEX pool or router makes it a swap.

3. A move’s USD value is best described as…

Values use the price at the time of the move and can be off for thin markets.

Describes past on-chain activity and how our data is built. Not investment advice. Method details: data methodology.