Varun Srinivasan
@varunsrin
Followers
10,315
Following
615
Media
99
Statuses
1,421
Building @farcaster_xyz . Previously @Coinbase , @SoundFocus (YC S13), @Microsoft
Los Angeles, CA
Joined February 2009
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"you get .0002% shares over 4y, 90 days to exercise, 409a is still being decided. we're totally 5x more valuable than our last round. no, i can't share our cap table, revenue or outstanding shares."
"... no thanks, i'm joining this web3 company instead"
"goddamn ponzi schemes"
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my solidity files: 10% actual code, 90% comments rationalizing the horrible, horrible things i'm about to do with the bits to save gas
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Our plan is to scale Farcaster to 1 million daily users.
The network must handle 10,000 transactions per second while staying credibly decentralized.
That's the same order of magnitude as Visa.
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After 4 and a half years, today is my last day
@coinbase
. Very fortunate to have learned from the smartest and kindest folks in crypto through some crazy times in the industry.
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Ideas for building sufficiently decentralized social networks
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A quick primer on frames!
- Powerful mini-apps in your feed
- Helps you reach your users on Farcaster
- Built on open standards
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Excited to announce the new raise!
Our goals remain the same - grow daily users and improve the developer experience.
If you want to work with us on Farcaster, we're opening more roles for staff engineers. Details in next tweet.
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Thanks
@philip_pfo
and
@gburrell_greg
for stopping by
@coinbase
HQ to talk about Full Cycle Developers with our engineering team! Incredible to see how much Netflix's infrastructure has changed over the last 10 years
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ENS usernames are live on
@farcaster_xyz
!
Here's a peek into how they work with the protocol:
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Scaling Farcaster's Gossip with Bundles
FC Hubs are running into scaling issues with libp2p. We're proposing a change to "bundle" messages to fix some of these issues.
Link in next tweet
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Deltagraphs are a consensus model for decentralizing social networks.
Using a combination of blockchains and CRDTs, we’ve scaled Farcaster to hundreds of thousands of users.
I wrote a bit about how this works - link in next post.
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EIP 7212 seems like a very big deal for onchain ux 👀
You could start using passkeys to operate smart wallets directly if this existed.
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A Better Model for Valuing Startup Equity
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Farcaster Hubs are now fully permissionless and there are over 30 of them running already!
Help us stress test the network by running one today. It takes ~15 mins to set up and ~ 75 mins to get in sync.
(details in reply)
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i wonder if they realize how much they sound like people who used to mock them, back when they were the ones making strange new things
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A quick peek at the stack that
@warpcast_
and
@farcaster_xyz
are built on
Farcaster is only possible because we can stand on shoulders of OSS giants like IPFS's
@libp2p
,
@paradigm
's Foundry, Facebook's
@RocksDB
and Google's
@grpcio
, among many others
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Ever wonder how
@coinbase
safely deploys code that manages billions of dollars of crypto on
@awscloud
?
Our very own
@GrahamJenson
just open sourced our pipeline:
PS - we're hiring!
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Frame Actions!
A new video that dives into how Farcaster frame buttons work, and the security model behind frames.
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We're redesigning Farcaster's sync for the next 10x.
Here's a quick overview of how it works and what's hard about syncing a social network between apps.
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Sign in with Farcaster is here!
A new standard to log in to any app with a Farcaster account.
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Excited to announce that
@NamrataGanatra
has joined us
@coinbase
to lead our Payments team! She brings a ton of experience building global payments at scale, and we're very excited to be building the open financial system together.
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If you want to build a decentralized social network, you must solve four hard problems:
1. Identity
2. Authentication
3. Availability
4. Consistency
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Ponder is very well designed.
Took me ~ 1 hour to stand up a public Graph QL endpoint that lets you query Farcaster contract state.
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It's alive!
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Things I wish I learned in school:
* How to live well - meditation, therapy, mental disorders, drug science
* How to live long - science behind eating, sleeping and exercising well
* How to get wealth and leverage - investing, coding, selling, writing
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Excellent work from the
@coinbase
security team who caught some scary reorgs in ETC.
The long-tail of PoW chains will find it hard to protect themselves if inducing reorgs becomes financially profitable. PoW space will likely be dominated by a few, large chains.
On 1/5/2019, Coinbase detected a deep chain reorganization of the Ethereum Classic blockchain that included a double spend. In order to protect customer funds, we immediately paused movements of these funds on the ETC blockchain. Read more here:
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Farcaster Hubs now take ~ 3 mins to setup. Once set up you can:
- Read 3.8M historical user messages
- Stream new messages from users in real time
- Write messages and have them show up immediately in Farcaster apps.
You could have a Hub running on your laptop in less than
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Warpcast is opening up new roles on the team.
We're looking for staff level people to work on the Warpcast app and Farcaster protocol. Roles include:
- Design
- Frontend
- Backend
- ML
- Distributed Systems
See next tweet for more details and how to apply.
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It's alive!
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Warpcast is giving $50k to OSS projects that help the Farcaster ecosystem.
If your codebase is MIT licensed and used by a Farcaster project, you qualify.
The deadline is April 31st, see thread for the link.
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today on farcaster
- someone asked us to improve one of our libraries
- we put out a 500 USDC bounty using
@bountycaster
-
@dalechyn
is livestreaming a fix a few hours later
(link in next post)
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Crypto Moats and How to Build Them:
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.
@Optimism
is giving grants to onchain builders. You can apply with your Farcaster account.
If you don't have one and were a recipient in Round 3,
@warpcast_
will give you one for free.
Use the link in next tweet to apply.
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Working with
@firstround
on this piece and thinking through the lessons from the last year of growth at
@coinbase
was one of the most useful things I've done recently. Need to do more writing and reflecting this year!
Lessons from
@coinbase
's wild ascent: four rules for scaling (ft.
@varunsrin
, new on
@firstround
Review)
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Farcaster now has APIs to send direct messages.
This opens up a whole new way to communicate with your users.
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If you follow
@punk4156
or
@CozomoMedici
on OpenSea, you may have noticed that they're minting hundreds of flipped punks and apes.
But don't go minting any yourself just yet.
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Warpcast is giving out grants to all the teams building open source software in the Farcaster ecosystem.
Thank you for making it easier for others to build on Farcaster!
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Big news today! We're launching support for the USDC stablecoin on
@coinbase
Coinbase is launching support for the USDC stablecoin. Starting today, Coinbase customers in supported jurisdictions can buy, sell, send, and receive USDC at and in our mobile apps. Learn more here:
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Over 4,000 people are running Farcaster hubs!
Someone on the dev call today said they might be "faked" via proxy or other tricks. We're offering a 1 ETH bounty via
@bountycaster
if you can prove this.
Details in next tweet.
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Farcaster has a new home on the web at !
Docs are significantly improved, addressing the
#1
pain point developers had with Farcaster
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Get a free Farcaster account from
@ETHGlobal
Open to everyone who has attended an ETH Global hackathon. Link in next post.
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@coinbase
@brian_armstrong
@FEhrsam
@rwitoff
@adrianmacneil
@jeremyhenricks
@garrytan
I’m taking some time off to decompress, help eng leaders and founders and write for a few months. If you want to talk crypto or startups over coffee, my DM’s are open.
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Want to learn more about how Farcaster v3 works?
New docs site is out with all the details and stick figures you'll need.
(link in reply)
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benchmarked bun on the fc codebase today.
it's a typescript turbo monorepo with some rust thrown in, so take that into consideration.
for offline package installation with a lockfile, bun beat yarn by ~ 8x. that's crazy fast.
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Bountycaster is really incredibly.
Ran into a nasty sync bug that stumped our team, posted a 2 ETH bounty, had a fix from
@FrederikBolding
in a few hours.
@ljxie
and daniel are building something special.
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Brand new CLI experience for Farcaster Hubs
- Checklist for config errors and guides on how to fix
- Progress bars for the initial sync
Coming soon in the next major release!
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If you’re curious about how decentralized social apps can be built on
@farcaster_xyz
, we recorded a series of 5-minute videos that cover the fundamentals
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Deltagraphs take the Goldilocks approach — stronger than federation, but lighter than a pure blockchain — which lets us scale while with a great UX for users and developers.
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Users should be able to store more data on the Farcaster network, especially if they're contributing interesting content.
@eth_call
@cass_on_mars
and I wrote a proposal that lets users "rent" more storage from the
@farcaster_xyz
protocol.
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Want to contribute to Farcaster?
We have a few open issues that are ideal for first time contributors who are familiar with Typescript.
(link in thread)
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Farcaster Frames now support transactions on Arbitrum!
$500k in retro rewards from the
@arbitrum
team for shipping new frames that work with Arbitrum.
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Live cast of yesterday's consensus workshop by
@gakonst
in the SBC Farcaster channel.
If you're going to SBC and want to join, DM me for an invite
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Any engineering teams out there processing more than 100M background jobs per day?
Starting to run into issues with our setup. Looking for ideas on what people typically turn to at this scale.
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Four hours from casting to store opening.
Farcaster ships 🫡
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Now at 45 Hubs with ~3 million messages synced!
Working on making it even easier/faster to setup.
Farcaster Hubs are now fully permissionless and there are over 30 of them running already!
Help us stress test the network by running one today. It takes ~15 mins to set up and ~ 75 mins to get in sync.
(details in reply)
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No onchain fees to join Farcaster if you're US-based.
More to come!
Starting today, Farcaster sign ups for US-based users are *free*.
Scan the QR code to get started:
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Enjoy working on hard React Native problems?
Warpcast, our
@farcaster_xyz
client, has over 50k daily users. We're looking to bring on another staff level RN engineer.
If you enjoy building fast, responsive RN apps, DM me. US timezones only.
More details in next tweet.
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Bundles are now fully rolled out on Farcaster.
The number of gossip messages went down significantly, and bandwidth and CPU usage dropped 50%
More improvements to follow!
Scaling Farcaster's Gossip with Bundles
FC Hubs are running into scaling issues with libp2p. We're proposing a change to "bundle" messages to fix some of these issues.
Link in next tweet
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join us.
I’m hiring a full-time 1) TypeScript / React engineer and 2) mobile engineer. DMs are open!
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Onchain Signers
A new proposal to move Farcaster signers onchain to dramatically simplify the user experience of dealing with applications and key pairs.
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Farcaster Capybara adds a little 🦀 to speed things up.
You can sync the entire network in a little over an hour.
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Do I know anyone who has experience with in-app purchases on mobile?
Interested in the nitty gritty details about refunds, reconciliations and fraud vectors
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Farcaster now supports "side channels" with FIP-2
A side channel is a feed outside of the main feed for anything that has a canonical uri (e.g. web page or smart contract)
User can post specifically into a side channel and devs can easily create feeds of such posts.
The Farcaster protocol now supports replies and likes directly for URLs, NFTs or NFT collections.
Before this, casts were the only primitives that you could reply or react to.
This enables a bunch of additional use cases for developers:
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Link defragmentation is coming to Farcaster!
A new proposal that simplifies managing follows when a user runs out of of storage space.
See next tweet for link.
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farcaster runs on dell
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Farcaster helps you bootstrap your app by filling out user profiles and finding people they know.
Easy to pull this data in seconds with
@neynarxyz
@airstack_xyz
or
@pinatacloud
New on
@paragraph_xyz
: view all collectors of any Paragraph post.
- we pull in
@farcaster_xyz
profiles for each collector
- see which collectors are also subscribers
- one-click subscribe to anyone
Lots more onchain social, discovery & creator growth improvements incoming.
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Farcaster now has a dedicated channel for ethCC
If you’re going to be in Paris and want an invite to join, DM me.
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Looking for a PM to lead Crypto Platform at Coinbase
High growth role working with
@balajis
,
@barmstrong
, me, crypto engineers and the community. DM or apply if you’re a BUIDLer and an experienced PM who engineers love:
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giving up founder allocation, what a chad play
purple dao is one to keep an eye on:
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solidity twitter - how would you build an upgradeable contract today?
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.
@dwr
and i are growing the team 🚀🚀
if interested, click through to the form👇
Looking to hire a distributed systems engineer and an Ethereum engineer.
Vast majority of what you'll be working on will be open source.
Apply here:
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@brettberson
directly correlated for founders, investors
slightly correlated for pms
no correlation for engineers
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If you have thoughts on our approach, you can reach us on Github or DM me directly.
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The best answer to "Why Farcaster?" from
@Zeneca
"Farcaster has no native token, there is no ponzi, it is just a good product, built by great developers, and used by great developers."
I see a lot of confusion going around about Farcaster, what is it, what is Warpcast, etc. Here's a quick post explaining:
In their own words: Farcaster is a sufficiently decentralized social network built on Ethereum.
Users can create profiles, post short messages or "casts",
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if you genuinely believe something broke, you stop all trading.
if you want to manipulate the price , you allow one side- trading.
robinhood made it crystal clear today that hedge funds are their customers, and retail traders are the product.
In light of current market volatility, we are restricting transactions for certain securities to position closing only, including $AMC and $GME. Read more here.
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@jimpo_potamus
and I are excited to announce the Coinbase Protocol team! Come work on open source crypto with us:
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Stock option offer letters are insanely complicated to understand. It's one of the hardest things I've had to explain to engineers interviewing at
@coinbase
, crypto included. Here are the three things that tend to trip people up:
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Coming to
@gakonst
's RustxEthereum event? There's now a Farcaster channel for it!
(link in thread)
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Get webhooks when someone talks about you or your company on Farcaster
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come work with us!
We're up to 7 people at
@farcaster_xyz
and looking to hire 3 more engineers.
Offering >1% equity for each hire.
Looking for 5+ years experience, US timezone, interest in building open source software.
If you're interested, DM with GitHub or LinkedIn.
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An articulation of how
@dwr
and I designing
@farcaster_xyz
, a new social networking protocol.
If you know Solidity well and want to work on this, we're hiring and my DM's are open.
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State growth can be controlled by :
1. Optimizing db layout and indexing
2. Condensing message sizes
3. Charging rent for storage on the network
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Farcon in Venice looks absolutely stacked.
Huge shoutout to all the organizers! RSVP link in reply.
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@coinbase
There are a lot of people to thank, but especially
@brian_armstrong
,
@FEhrsam
,
@rwitoff
,
@adrianmacneil
and
@jeremyhenricks
for taking crazy chances on me over the years and
@garrytan
for convincing me to join.
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My wishlist for the Farcaster ecosystem
A good starting point for developers looking to get hands on with Farcaster. As a bonus, many of these ideas are bootstrappable businesses.
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Running a node should cost < $1000/mo.
You should be able to use a provider like AWS to run one, and download the entire state of the network to a single machine.
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i don't think there's a single good reason not to be using
@paulmillr
's noble in all typescript projects that need to handle ec stuff
v1 was already fast and well designed, and v2 looks fire
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Its hard, if not impossible, to have identities that are decentralized and trustworthy.
If ownership is sovereign, what stops someone from registering "cocacola" and holding it forever?
A namespace where popular names are squatted isn't useful.
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noble is a beautiful cryptography library for typescript.
minimal, well-audited and as simple as it can be.
we use it a lot in farcaster and are proud to support
@paulmillr
's work with a small grant.
Farcaster is building a decentralized social network. Anyone could run a p2p hub. Important data is stored on the blockchain.
Thanks to their support, we would be able to engage another auditor soon.
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This tricks
@opensea
and
@etherscan
into showing them as legitimate "Mint" Events, and unsuspecting users may ape into these fake NFT's.
Expect these attacks to become more common, always be careful when buying new NFT's!
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Buoy is very neat!
It lets you keep track of what people are saying about a topic on Farcaster.
But the really cool part is how it integrates with Farcaster direct messages and sends alerts straight to your inbox.
Programmable DCs unlock pure farcaster-native experiences
Sign in with Farcaster and get a direct (opt-in) marketing & support channel to your users. No email required.
Find the promo code in the video below to get 69% off your first month of
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You'll be able to use ENS names on Farcaster in a few weeks!
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A second problem is replication.
Hubs are good at fetching data but don't support broad query patterns, which most apps need. The solution is to replicate it to a data store like Postgres.
We're working on Shuttle, a system to sync databases to nodes with a delay of < 1s.
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