openOracle

A settlement-grade oracle
in which the absence of trade

is evidence of correctness.

[openOracle @OpenOracleEth]

openSwap v2 is live on @base:

+ 60% cheaper gas
+ Atomic match and oracle report
+ permit2 approvals for USDC
+ Automatic cancels by MEV bots if unfilled

Enjoy some of the cheapest swaps onchain.

[openOracle @OpenOracleEth]

https://t.co/YI0N4M3zSI

[openOracle @OpenOracleEth]

Why pay more if you can pay less?

openSwap is unlike anything you've used before.

ETH <-> USDC

[kiter @0xKiter]

@OpenOracleEth noicee

look good here.

[openOracle @OpenOracleEth]

Hello Vitalik,

In your fireside chat with @vnovakovski and the Lighter team last week, you suggested using something like an AMM TWAP as a price oracle when the relevant assets are already onchain.

You also noted the question of how to sample spot prices in a way that is not easily manipulable. More detail on how you are thinking about that would be very helpful, especially in a world with adversarial block production and ePBS.

From our perspective, the sampling question is the core oracle problem for trade-based aggregation mechanisms like AMM-derived price oracles. If a protocol relies on sampling onchain market state, the relevant security question is: what does it cost to control, distort, or censor the sampled state during the oracle window, and how does that cost compare to the value extractable from the external notional settled by that price?

Do you have a concrete model or proposal for doing this without making the oracle window so long that price latency becomes a major cost? Longer observation windows may improve manipulation resistance, but for exchanges or lending systems using leverage, stale prices can be uncompetitive and economically expensive.

It is good to hear you express concern about oracles as skeletons in the closet. If we want to be as rigorous about oracles as we are about proof systems, then the sampling problem needs a concrete adversarial model rather than being treated as an implementation detail.

One possibility is that importing prices into adversarial financial mechanisms should itself be a paid, adversarial process, rather than assuming robust prices can be sampled for free. That is the direction we are exploring.

[openOracle @OpenOracleEth]

@0xKiter We're now live on Base

[openOracle @OpenOracleEth]

openSwap is live

= P2P liquidity
= MEV-as-a-feature
= Engineered to undercut AMM fees

On-chain RFQ flow:

swap intent → match →
oracle settlement → execution

https://t.co/bKRgYQv3Pp

[openOracle @OpenOracleEth]

https://t.co/AGTGmo4YQg

[openOracle @OpenOracleEth]

openSwap v2 is live on @base:

+ 60% cheaper gas
+ Atomic match and oracle report
+ permit2 approvals for USDC
+ Automatic cancels by MEV bots if unfilled

Enjoy some of the cheapest swaps onchain.

[openOracle @OpenOracleEth]

The new openSwap is powered by openOracle v2, an optimized version of our core oracle contract.

The v2 oracle features native ETH support, game state stored in a single hash, internal balances, and more.

Read about it here:
https://t.co/Gheff6LplR

[openOracle @OpenOracleEth]

The generalized oracle problem is a monster.

What if the most robust way to solve it is by building something even worse?

https://t.co/AEpLTvQNRC

[openOracle @OpenOracleEth]

Even if much of the industry is punting on the hard problems, we aren't.

Nothing we build has admin keys, upgradeability, governance, or privileged access. Our price oracle is an onchain, permissionless escalation game.

It's hard to build this way. But we think this is the only way to scale securely.

[@aaronjmars @aaronjmars]

had a pretty big crash-out yesterday after the Drift exploit, small rant:

> this moment you realize that in 2026, 6 years after DeFi Summer, 4 years after Terra collapse - you still have a $45B chain almost killed by an exploit

like almost everyone farming on Solana had exposure to this, the same way Resolv nuked lots of vaults across ETH 1 week ago

i feel like the party truly is over

i still farmed protocols, still had fun trying new shit: 'oh a cool new defi vault, might get an airdrop for it'

turns out we're the last exit liquidity of this industry; hacks happen almost daily these days - and protocols gave up on compensation plans

"private key compromised," yeah right :)

idk whats happening down there, if those guys have the opsec of a fucking children, if it's an insider job, if it's lazarus or whatever

anyway, i've tried to reallocate my positions in a safer way.
and realized nothing that has been built for the past 5 years in defi is adding any value.

top 5 morpho vaults are just coinbase & paypal
DAI / Sky is now a t-bill wrapper managed off-chain.
90% of the L2s are absolutely not decentralized

so you basically get all the downsides of onchain (hacks, private key leak, chain dead, etc etc) without having any upside.

you must be a fucking moron to use DeFi in 2026

i've tried using some CEX again, first time in 4 year.

most of them have a really great security system.
i feel safe using them. Binance have a face ID test when you try to withdraw funds; i think thats fucking wonderful

meanwhile onchain, you need an army of AI agent every day that monitors exploits to see if you are safe from interacting

ah, axios got pwned ? no crypto for me today
is this URL the correct one ? will this transaction blow-up my wallet ? arf i forgot to disapprove this contract.

i'm tired seeing ppl getting hacked on my TL

sorry; dont have a good ending to this rant
i'm thankful for aave, uniswap, maybe ethena, to have built something wonderful

i'd love to get an understand; from someone involved in the defi ecosystem; what improved since 2020.

maybe we were too idealistic? maybe being able to freeze an asset is actually good for our industry? why are there still no guardrails on moving $200M out of a protocol in one hour?

or maybe not idealistic enough? but then why is aave on eth the only protocol i can park my usdc (:>) for 1 year & not be scared?

ethereum was a cool experiment but every 'institution' is building his own chain / tokens that have guardrails built-in. so who are ethereum users exactly? maybe we are doomed to be the exit liquidity of north korea, idk

¯\_(ツ)_/¯

[openOracle @OpenOracleEth]

How should we think about solving some of crypto's hardest problems? The right framing may improve our chances.

https://t.co/RWiGH3rNhc

[openOracle @OpenOracleEth]

@Optimism Strange, as we launched openSwap around this time 🧐

[openOracle @OpenOracleEth]

@bittybitbit86 @cryptofergani @CoWSwap *openSwap

[openOracle @OpenOracleEth]

@AsnoGordo @CoWSwap openSwap is the place for you.

[openOracle @OpenOracleEth]

@Lightningbros2 @Uniswap @Securitize @BlackRock @CoWSwap / openSwap

[openOracle @OpenOracleEth]

https://t.co/n7QvcjbUNz

[openOracle @OpenOracleEth]

Introducing the refreshed brand system.

A new chapter in openOracle’s visual language.

[openOracle @OpenOracleEth]

https://t.co/AGTGmo5wFO

[openOracle @OpenOracleEth]

openSwap is fully on-chain, open source, non-custodial, and permissionless. You can try the application here:

https://t.co/t2201KxsCu

[openOracle @OpenOracleEth]

Today we're excited to announce openSwap, an openOracle-powered swapping application live today on OP Mainnet.

openSwap is designed to frequently offer fees cheaper than you could find in an AMM.

https://t.co/tSPlc3H5ia

[openOracle @OpenOracleEth]

We’ve also enabled OP rewards from our Season 8 Optimism Growth Grant — upon a successful swap, you’ll get ~0.005% back in OP tokens.