What is Oko?
Oko is an Ethereum explorer focused on smart contracts.
It is intended for a public of experienced Ethereum developers.
It was developed to fill a gap in the tools available out there that wouldn't show enough information about smart contracts.
Oko tries to get the source & ABI of verified contracts, and uses Panoramix to decompile contracts without code.
It also tries to interpret the input data for all calls made to contracts, to display it in an understandable form.
How do I use it?
Simply use the search box above. You can enter:
- - A contract address
- to see source code or decompilation of a contract, calls made from/to it.
- - A transaction hash
- to see the state modification caused by the transaction, and a tree of the calls made during it.
- - A block number
- to see basic information about the block, and a list of transactions included in it.
Last block is 14866030.
You can also simulate arbitrary calls.
Top active contracts
Aggregate measures over the last 10000 blocks.
By gas usage
- 21210372366
- 0x7f26…38e5 (WyvernExchangeWithBulkCancellations)
- 17089524849
- 0x68b3…fc45 (SwapRouter02)
- 8425218891
- 0xf9e2…79f2 (OwnableDelegateProxy, AuthenticatedProxy)
- 5431204074
- 0xbaf2…88a7 (MerkleValidator)
- 4532709454
- 0xc02a…6cc2 (WrappedEther, Stablecoin, WETH9, 0x Ecosystem, Token Contract, https://weth.io/, Wrapped Ether (WETH))
- 3921574086
- 0xdac1…1ec7 (TetherToken, Stablecoin, Token Contract, https://tether.to/, Bitfinex, Tether USD (USDT))
- 3824019727
- 0xa0b8…eb48 (FiatTokenProxy, https://www.centre.io/, Stablecoin, USD Coin (USDC), Token Contract)
- 3084657212
- 0xa232…bdcf (FiatTokenV2_1)
- 3000410487
- 0xa540…77c1 (OwnableDelegateProxy, WyvernProxyRegistry, OpenSea.io_Registry)
- 2992699149
- 0x7a25…488d (UniswapV2Router02, Router 2)
- 2625293309
- 0x881d…300c (MetaMask, Swap Router)
- 2483613657
- 0x83c8…aba2 (GemSwap)
- 2460311962
- 0x1111…097d (AggregationRouterV4)
- 2337030868
- 0x0000…0bef
- 2226295845
- 0x283a…b7f5 (ETHRegistrarController, ETH Registrar Controller, ENS)
- 2064877306
- 0x74de…6631
- 1957739928
- 0x220b…96d4
- 1943573780
- 0xdef1…5eff (Zerox Exchange, ZeroEx)
- 1650692121
- 0xc99f…e5c5 (WyvernAtomicizer)
- 1570467567
- 0x88e6…5640
By calls received
- 528355
- 0xc02a…6cc2 (WrappedEther, Stablecoin, WETH9, 0x Ecosystem, Token Contract, https://weth.io/, Wrapped Ether (WETH))
- 381099
- 0xa540…77c1 (OwnableDelegateProxy, WyvernProxyRegistry, OpenSea.io_Registry)
- 191406
- 0xa232…bdcf (FiatTokenV2_1)
- 191397
- 0xa0b8…eb48 (FiatTokenProxy, https://www.centre.io/, Stablecoin, USD Coin (USDC), Token Contract)
- 157382
- 0xdac1…1ec7 (TetherToken, Stablecoin, Token Contract, https://tether.to/, Bitfinex, Tether USD (USDT))
- 145224
- 0x68b3…fc45 (SwapRouter02)
- 136016
- 0x7f26…38e5 (WyvernExchangeWithBulkCancellations)
- 126268
- 0xf9e2…79f2 (OwnableDelegateProxy, AuthenticatedProxy)
- 113704
- 0xbaf2…88a7 (MerkleValidator)
- 65005
- 0x0000…2e1e (Registry with Fallback, ENSRegistryWithFallback)
By calls emitted
- 480810
- 0x7f26…38e5 (WyvernExchangeWithBulkCancellations)
- 361508
- 0x68b3…fc45 (SwapRouter02)
- 191397
- 0xa0b8…eb48 (FiatTokenProxy, https://www.centre.io/, Stablecoin, USD Coin (USDC), Token Contract)
- 102701
- 0x7a25…488d (UniswapV2Router02, Router 2)
- 85202
- 0x283a…b7f5 (ETHRegistrarController, ETH Registrar Controller, ENS)
- 75972
- 0xdef1…5eff (Zerox Exchange, ZeroEx)
- 65843
- 0x74de…6631
- 58067
- 0x1111…097d (AggregationRouterV4)
- 56653
- 0x88e6…5640
- 52389
- 0x220b…96d4
By balance
- 12697284 eth
- 0x0000…05fa (DepositContract)
- 5910373 eth
- 0xc02a…6cc2 (WrappedEther, Stablecoin, WETH9, 0x Ecosystem, Token Contract, https://weth.io/, Wrapped Ether (WETH))
- 756862 eth
- 0x4ddc…0ed5 (Compound Ether (cETH), CEther, DeFi, Token Contract, cETH Token)
- 638452 eth
- 0x011b…d515 (Bridge, Arbitrum, Layer 2, TransparentUpgradeableProxy)
- 593597 eth
- 0x07ee…3eca (Contract 1, Exchange, Gemini)
- 388353 eth
- 0x8484…2b30 (Polygon (Matic), EtherPredicateProxy, Ether Predicate Proxy, Ether Bridge, Matic Network)
- 348270 eth
- 0xde0b…7bae (EthDev, Ethereum Foundation)
- 336354 eth
- 0xdf9e…3d7f (ActivePool)
- 311863 eth
- 0xa929…490c (Bridge)
- 308632 eth
- 0xdc24…7022 (Vyper_contract)
About
An experiment by palkeo. Feel free to contact me at oko@palkeo.com.
Thanks to my generous Ethereum hosting provider for a spot in his attic. Powered by a free-range Internet.