can someone explain how arbitrum works ? i don’t get the ‘batch transactions, execute them off the main Ethereum chain, and store the confirmation on the main chain’
when i make a transaction on arbitrum , say a trasfer from my arbitrum wallet to another arbitrum address. what information exactly is stored on Ethereum chain ?

can you eborelate ?

The descriptions says Arbitrum allows users to perform transactions off the main network and has them verified and batched before being committed back to the main chain.
What does that really mean? what kind of transactions ? what kind of off-chain.

i just don’t see how it differs from other chains like BNB chain

in other words. if i want to send you ETH on mainnet, it would be slow and expensive, sure. I can just send it using BNB network for example, cheap and fast. why would anyone need Arbitrum for that ? what is the usecase of it

read more on l2s

just a bit more you need

to understand

Unlike BNB, Ethereum mainnet can't achieve the scalability (trx/sec) like BNB, so it relies on Layer2 chain to improve its scalability. L2 executed and bundles many transactions together and submit a single transaction into mainnet. What kind of transaction? Regular ethereum transaction. L2 is also using the ethereum execution client. Off chain means off the main ethereum chain.

that’s the thing that i don’t get. i bridghed some sepolia eth to arbitrum sepolia testnet. on etherscan i see that i send that money to a smart contract. after that i transfered that testnet eth to another arbitrum testnet account. however i don’t see any transaction on etherscan. how is it bundling and submiting transaction into main eth chain ?

Hello Guys So ,...

I was testing a locker , when I call the lockERC20() function on the contract it goes well on etherscan , but it keeps failing when called from a frontend

this is the contract : https://goerli.etherscan.io/address/0x76f9d2ce0ea63426f2b02d78c641541862b5b416

so the question is , if it is failing when calling from frontend that means I am doing something wrong on the frontend?

@karola96 ?

probably? do you have a failed tx?

can you share the code that you are using in your FE ?

https://goerli.etherscan.io/tx/0xffdbbbc4847586d76a97d2e06c83e87b356a6219c3d7a0e74bfbc04341e0fbda

const a = await contractToken.approve(wallet, lockAmount?.toString())

const lockERC20 = await botBrainContract.lockERC20(
lockedToken,
lockAmount?.toString(),
duration, { gasLimit: "3000000"})

these two functions , called inside an If else block

funny thing is this is actually not done on my pc , when I am calling the function it is going , it is specific to a certain someone on this

https://goerli.etherscan.io/tx/0x90c85bacc71a4f5d1e943be69ff5398003985ffb08d6fd8792c63a2622a252b5

when I call it goes through for some reason

what might be the reason @FreezyEth

lock erc1155 ?

I am so confused

no erc20

rn only erc20 testing

yep sorry my bad

no allowance

you are not doing the approval correctly

oh but that gone through

you approved yourself

here the approve is wrong

oh

instead of wallet, you should put the locker address

I see lol

that is the sender address

const a = await contractToken.approve(wallet, lockAmount?.toString())

yes it is wrong

hes talking about thos

await contractToken.approve("0x76f9D2Ce0Ea63426F2B02d78C641541862b5B416", lockAmount?.toString())

ok i see, thanks for help bro @FreezyEth

yw

Your transfer within arbitrum can only be seen in testnet.arbiscan.io, not etherscan coz that is L2 transaction, not L1.

If you want to view the bundling part, check out the "Batch" page in arbiscan. Find out your transaction is in which batch and whether the batch has already been submitted to L1.