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 12891737.

You can also simulate arbitrary calls.

Top active contracts

Aggregate measures over the last 10000 blocks.

By gas usage

16162632505
0x7a25…488d (UniswapV2Router02, Router 2)
9587971374
0xe592…1564 (SwapRouter)
9087144823
0x1a2a…54f2 (Ronin Bridge, MainchainGatewayProxy, Axie Infinity)
8785810392
0x8407…f21e (MainchainGatewayManager)
7506201646
0xc02a…6cc2 (WETH9, 0x Ecosystem, WrappedEther, https://weth.io/, Token Contract, Stablecoin, Wrapped Ether (WETH))
6398266508
0xdac1…1ec7 (Tether USD (USDT), Token Contract, Stablecoin, TetherToken, https://tether.to/)
5292936340
0x7be8…d12b (Marketplace, WyvernExchange, Collectibles, OwnableDelegateProxy, NFT, OpenSea.io)
5250572960
0xfd3d…0626
4393823138
0x1111…aa26 (1inch.exchange, AggregationRouterV3, 1inch V3)
4117491220
0x881d…300c (MetaMask, Swap Router)
3698020909
0xa0b8…eb48 (FiatTokenProxy, Token Contract, Stablecoin, https://www.centre.io/, USD Coin (USDC))
3243745546
0x74de…6631
3005912416
0xc364…fe88 (NonfungiblePositionManager)
2970475852
0xa232…bdcf (FiatTokenV2_1)
2472794105
0x03f7…b329 (UniswapV2Router02)
2380265692
0xdef1…5eff (ZeroEx)
2379745696
0xf9e2…79f2 (AuthenticatedProxy, OwnableDelegateProxy)
2142131727
0x9423…c8d7 (TopDog)
1699499121
0x4fed…f833
1593404704
0xfbdd…e655

By calls received

858062
0xc02a…6cc2 (WETH9, 0x Ecosystem, WrappedEther, https://weth.io/, Token Contract, Stablecoin, Wrapped Ether (WETH))
274944
0xdac1…1ec7 (Tether USD (USDT), Token Contract, Stablecoin, TetherToken, https://tether.to/)
265045
0x33e7…5ad2 (Registry)
196109
0xa232…bdcf (FiatTokenV2_1)
196096
0xa0b8…eb48 (FiatTokenProxy, Token Contract, Stablecoin, https://www.centre.io/, USD Coin (USDC))
165619
0x42b1…57e0
134877
0x7a25…488d (UniswapV2Router02, Router 2)
134117
0x9813…18d9 (BoneToken)
132917
0xe592…1564 (SwapRouter)
93705
0xa540…77c1 (WyvernProxyRegistry, OpenSea.io_Registry, OwnableDelegateProxy)

By calls emitted

573916
0x1a2a…54f2 (Ronin Bridge, MainchainGatewayProxy, Axie Infinity)
471156
0x7a25…488d (UniswapV2Router02, Router 2)
196096
0xa0b8…eb48 (FiatTokenProxy, Token Contract, Stablecoin, https://www.centre.io/, USD Coin (USDC))
171283
0xe592…1564 (SwapRouter)
120138
0xfd3d…0626
107955
0x9423…c8d7 (TopDog)
103892
0x7be8…d12b (Marketplace, WyvernExchange, Collectibles, OwnableDelegateProxy, NFT, OpenSea.io)
85183
0xdef1…5eff (ZeroEx)
84811
0x74de…6631
80866
0x1111…aa26 (1inch.exchange, AggregationRouterV3, 1inch V3)

By balance

7032556 eth
0xc02a…6cc2 (WETH9, 0x Ecosystem, WrappedEther, https://weth.io/, Token Contract, Stablecoin, Wrapped Ether (WETH))
6413090 eth
0x0000…05fa (DepositContract)
1287708 eth
0x4ddc…0ed5 (DeFi, CEther, cETH Token, Token Contract, Compound Ether (cETH))
745775 eth
0x8484…2b30 (Matic Network, Ether Bridge, Ether Predicate Proxy, Polygon (Matic), EtherPredicateProxy)
608871 eth
0xdf9e…3d7f (ActivePool)
481027 eth
0xdc24…7022 (Vyper_contract)
463761 eth
0xa929…490c (Bridge)
376241 eth
0x07ee…3eca (Gemini, Exchange, Contract 1)
325001 eth
0x2208…3a9d
243411 eth
0x1db9…fcf4

About

An experiment by palkeo. Feel free to contact me at oko@palkeo.com.

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