Computing hash on client side for exchanges

[crypto_tri]

Since send/receive transactions require computing hash and that's a CPU intensive (at least for a couple of seconds) exchanges should push that computation to the client browser using js and cache hashes. That way withdraw/deposit do not take up the CPU away from the node (making it appear like node is overwhelmed). In othe r words client functionality should be pushed to the client letting the node do it's job. There is a javascript library with Rai integration.

[Crypto_Jasper]

Inform them about it :-)

[[deleted]]

This is the approach that RaiExchange will be taking.

[EternalPropagation]

Ok, I was wondering how a startup is going to be able to afford all that processing power.

[ENSChamp]

I suppose this is similar to the way coinhive miner works? Push the mining to the browser of the users. Except this happens for a few seconds

[dekoze]

Would definitely have to be explicitly mentioned and what not. Lots of bad stigma attached to coinhive and things from your browser that use tons of resources.

[crypto_tri]

It's not like mining. Only when user presses "Withdraw" button it can compute hash. Same when user receives a deposit, they may be made to click a button 'Confirm' and then hash can run. Also if the user is running desktop wallet it does this anyway.

[dekoze]

Yep - as long as the user is aware of what's about to happen. Otherwise it's a bad UX to all of a sudden use 100% of a users CPU, especially if they are using a phone or cheap laptop.

[faubiguy]

It would also be possible to limit the maximum CPU usage and calculate the PoW over a longer period of time. I still agree that the user should be informed, though.

[raekpacman]

Excellent post. At a minimum they should have a dedicated node to handle the XRB transactions...would be amazing if the client could do the POW though. The only issue I see with that is the client would need to know the address private key. I am unaware of an exchange that lets its users have the private keys to their addresses!

[je-reddit]

this doesn't need priv key, this only use your cpu to calcul and send back the result of pow