On-chain

What it may indicate

When a payment takes place on-chain, it is permanently recorded on the blockchain. This makes it possible to follow a transaction objectively and to substantiate it in an investigation report. Where fraud is suspected, on-chain evidence is often the strongest lead, because it cannot be altered after the fact.

What is on-chain?

On-chain means that a transaction or piece of data is processed directly on the blockchain and remains permanently visible there. Anyone can look up the transaction through a blockchain explorer using the address or the transaction hash. This contrasts with off-chain arrangements, which run outside the blockchain and are therefore harder to verify.

Why does on-chain matter in a crypto investigation?

Because on-chain data cannot be manipulated, it provides a reliable basis for reconstructing a money flow. An investigator can cluster addresses, reconstruct a chain and demonstrate where the assets came from or went to. Off-chain materials such as emails or screenshots are supporting evidence but carry less weight than the on-chain trail.