Victor Yeo

When users create accounts in a centralised crypto exchange, the keys are managed by the exchange. The users do not own their keys in a centralised crypto exchange. These keys are required when users want to send their crypto to other addresses.

We can use AWS KMS to manage keys…

When i was developing Ethereum React Native wallet app, i use web3 to transfer tokens from sender to receiver. I keep getting this error:

“Returned error: unknown account”

The root cause is the wallet account created from ethereumjs-wallet is not recognised by web3.

The solution is to link ethereumjs-wallet account…