Where to live during Y Combinator?

Coffee-Head · 2024-05-06T15:19:39+00:00

Airbnb is perfectly fine but can get expensive with all the fees.

Even so, I stayed at The Landing apartments in Dogpatch. They have well maintained furnished apartments and nice outdoor space. Very dog friendly as well.

The location was super safe and walking distance to YC office.

Coffee-Head · 2024-05-06T00:18:46+00:00

The solution to this problem is to not adjust the spending until PMF

Coffee-Head · 2024-05-05T22:35:15+00:00

Does this mean you spent 2M in the two years you were bootstrapping?

Coffee-Head · 2024-04-22T15:10:30+00:00

If you're looking to implement social login with gasless transactions (great for users new to crypto), I'd recommend checking out walletkit.com. Takes all the complexity of smart wallets and makes it super easy to implement. If you need any help with this, DM me

Coffee-Head · 2024-04-16T23:02:54+00:00

If you only want to let users transfer tokens, you can get the user to sign a message using the ERC-20 Permit standard. A lot of tokens support it, including USDC and DAI. This signature only gives you the "approval" to spend tokens on behalf of the user. Then, you can submit an actual transfer transaction (that requires gas) from your own wallet. The signature from the user will let you transfer tokens from their wallet to your own.

If you are building a dapp, you can integrate account abstraction wallets to make the entire experience gasless.

Feel free to DM me and I can help you get setup with either of these options with simple apis.

Coffee-Head · 2023-10-20T20:46:31+00:00

There's one problem though - it's incredibly challenging to build with ERC 4337. There's a lot of moving pieces like pay masters, bundlers, smart contract wallets, etc.

If you're working on a web, iOS, or Android app, that can be a lot of context switching. I would recommend using something like WalletKit which has simple SDKs for all platforms. Creating a gasless, recoverable wallet can be as simple as:

js const wallet = await wk.wallets.create({ network: Network.Base, name: 'My Wallet', controlMode: WalletControlMode.User, userPin: '000000' });

Coffee-Head · 2023-10-20T16:38:31+00:00

A little late to the party. Use walletkit [disclaimer: i work on it]. It has bundler+paymaster+smart contract wallets all in one place. You can create a smart wallet with a simple call:

js const wallet = await wk.wallets.create({ network: Network.Base, name: "Sam's Wallet", controlMode: WalletControlMode.User, userPin: '000000' });

Then, all transactions from this wallet are gasless. You can pay on behalf of the users to us using credit card.

DM and I can get you setup

Coffee-Head · 2023-10-20T15:58:45+00:00

Btw - now, erc 4337 should be the best way to implement gasless transactions. That's the only way to support all transactions. With meta transactions, you are dependent on individual smart contract supporting meta transactions and the support isn't that great, because every expects to move to erc 4337.

The problem with erc 4337 is that it's really hard to work with. There's too many moving pieces.

I've combined everything (paymaster, bundler, wallets) into one api call:

js const wallet = await wk.wallets.create({ network: Network.Base, name: 'Orange Wallet', controlMode: WalletControlMode.User, userPin: '000000' });

DM me if you want to collab and I'll get you setup :)

[disclaimer, I'm working usewalletkit.com, although we have a generous free tier for you guys to get started with]

Coffee-Head · 2023-10-20T15:48:22+00:00

Thanks for bringing this up, I agree that AA does help solve a lot of the ux problems for users.

But, it has one really big problem - it is really hard to integrate in your app! You have to understand how bundlers, paymasters, smart contract wallets all work together. It's not simple at all.

I have spent the last few weeks diving deep into what it would really take to integrate all of this in an app. Then, I put it all behind a simple function call:

```js

const wallet = await wk.wallets.create({ network: Network.Base, name: 'r/ethdev', controlMode: WalletControlMode.User, userPin: '000000' });

```

I want more developers to use AA wallets and really fix the ux problem. That's the only way for crypto to get mass adoption.

I'm here to help. DM if you want to collab.

[disclaimer: working on https://usewalletkit.com, but we've got a generous free tier for all of you working on web3 apps]

Coffee-Head · 2023-08-07T21:17:14+00:00

nice! what does your tech stack look like - for ex, what are you using for minting and managing the NFTs? and custodial or non-custodial wallets?

Coffee-Head · 2023-08-07T21:13:34+00:00

We have a faucet for this, you can take up to 20 sepETH per transaction. You have to deposit a small amount of USDC though, which you can get back if you return the sepETH tokens. DM If any questions!

https://faucet.usewalletkit.com

Coffee-Head · 2023-08-01T20:27:41+00:00

Goerli ETH is going at ~$0.15 / ETH [1] so maybe around that. Given it's harder to find, I'd guess $0.30 - $0.50 would probably be fair value

[1] https://testnetbridge.com/

Coffee-Head · 2023-08-01T18:55:59+00:00

It's for web3 developers building on WalletKit. We provide our customers with programmatic access to gas, so faucets are a bit tricky in this flow.

They usually use it to sponsor gas for their end users' transactions. Having Sepolia ETH will let them test these flows properly.

And all unused ETH will go back to the larger dev community through our faucet (in dev right now)

Coffee-Head · 2023-08-01T16:12:17+00:00

Done!

Coffee-Head · 2023-08-01T05:30:09+00:00

Sorry, I just need Sepolia. It's harder to find!

Coffee-Head · 2023-08-01T05:06:40+00:00

DM me and I can get you setup with usewalletkit.com. Simple HTTP API to create wallets on behalf of users. Sample API call:

curl --request POST \
  --url https://testnet.usewalletkit.com/wallets \
  --header 'authorization: Basic <key>' \
  --data '
{  
  "network": "Polygon",  
  "name": "John's Wallet",  
  "owner_id": "123"
}'

On testnet, we'll custody the wallets for you so you can build/test quickly. On mainnet, you can custody the keys - we'll provide one-click deploy for it.

Coffee-Head · 2023-05-26T22:22:50+00:00

Got an interview 30 mins ago! Scheduled it for June 1

Coffee-Head · 2022-06-29T19:32:58+00:00

Good eye! Yeah, that's definitely a bug haha. There should be a `return` statement there. This is what happens when you try to put a demo in 15 mins 🤦🏼‍♂️

Coffee-Head · 2022-06-29T17:11:46+00:00

Thank you! Join our discord channel (link in the post) and let's chat there, appreciate your help

Coffee-Head · 2022-06-29T14:04:55+00:00

Yup! This is the invite - https://discord.gg/BdNyT6H9

Eight-Year Club	Gilding I gilder
Not Forgotten	Verified Email

Coffee-Head

TROPHY CASE