Oko contract explorer

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 16914135.

You can also simulate arbitrary calls.

Top active contracts

Aggregate measures over the last 10000 blocks.

By gas usage

12399921086
0xef1c…bf6b (UniversalRouter)
11701069867
0x0000…5127 (ERC1967Proxy)
11579555126
0x983e…862d (BlurExchange)
8047807833
0x0a25…fa59 (XENTorrent)
7525071181
0x3240…0324
7389541382
0x0000…0dd6 (Seaport)
6517194452
0x0645…6fb8 (XENCrypto)
6485164899
0xc02a…6cc2 (Wrapped Ether (WETH), WETH9, WrappedEther, 0x Ecosystem, https://weth.io/, Token Contract, Stablecoin)
6049118922
0x7a25…488d (UniswapV2Router02, Router 2)
5971241729
0xc796…ec89
4942959057
0xdac1…1ec7 (Tether USD (USDT), TetherToken, Bitfinex, https://tether.to/, Token Contract, Stablecoin)
3443769689
0x1111…0582 (AggregationRouterV5)
3308769454
0xabea…fbef (Proxy)
3300634050
0x1e00…3c71 (Conduit)
3118700061
0xa0b8…eb48 (USD Coin (USDC), https://www.centre.io/, FiatTokenProxy, Token Contract, Stablecoin)
3117475642
0x8e97…d2d9 (ZkSync)
2676929807
0x881d…300c (MetaMask, Swap Router)
2590115353
0x0000…8ba3 (Permit2)
2538842163
0xa232…bdcf (FiatTokenV2_1)
2484382820
0x07ce…3722 (ERC1967Proxy)

By calls received

714930
0xc02a…6cc2 (Wrapped Ether (WETH), WETH9, WrappedEther, 0x Ecosystem, https://weth.io/, Token Contract, Stablecoin)
221593
0xdac1…1ec7 (Tether USD (USDT), TetherToken, Bitfinex, https://tether.to/, Token Contract, Stablecoin)
168783
0x4bba…4a4d (Math)
164445
0xa0b8…eb48 (USD Coin (USDC), https://www.centre.io/, FiatTokenProxy, Token Contract, Stablecoin)
164268
0xa232…bdcf (FiatTokenV2_1)
137613
0x8ffd…5c86
108162
0xef1c…bf6b (UniversalRouter)
91928
0x0645…6fb8 (XENCrypto)
83246
0x0000…cd4e (OperatorFilterRegistry)
71536
0x3240…0324

By calls emitted

424095
0xef1c…bf6b (UniversalRouter)
221644
0x7a25…488d (UniswapV2Router02, Router 2)
214991
0x0000…5127 (ERC1967Proxy)
204963
0x3240…0324
169309
0x0645…6fb8 (XENCrypto)
163987
0xa0b8…eb48 (USD Coin (USDC), https://www.centre.io/, FiatTokenProxy, Token Contract, Stablecoin)
87908
0x1e00…3c71 (Conduit)
83788
0x1111…0582 (AggregationRouterV5)
77244
0x74de…6631
68713
0xae0e…d419 (Proxy)

By balance

17858791 eth
0x0000…05fa (DepositContract)
3778576 eth
0xc02a…6cc2 (Wrapped Ether (WETH), WETH9, WrappedEther, 0x Ecosystem, https://weth.io/, Token Contract, Stablecoin)
1074198 eth
0x8315…ed3a
471403 eth
0xdc24…7022 (Vyper_contract)
400378 eth
0xdf9e…3d7f (ActivePool)
335272 eth
0xde0b…7bae (Ethereum Foundation, EthDev)
294264 eth
0x4ddc…0ed5 (CEther, Token Contract, Compound Ether (cETH), cETH Token, DeFi)
289359 eth
0x99c9…4be1 (L1ChugSplashProxy)
241138 eth
0x8484…2b30 (Matic Network, Ether Bridge, Ether Predicate Proxy, EtherPredicateProxy, Polygon (Matic))
222009 eth
0x756d…373c

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.