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 13243976.

You can also simulate arbitrary calls.

Top active contracts

Aggregate measures over the last 10000 blocks.

By gas usage

16684493847
0x7be8…d12b (WyvernExchange, Marketplace, OpenSea.io, Collectibles, OwnableDelegateProxy, NFT)
9889610604
0x7a25…488d (UniswapV2Router02, Router 2)
8021268790
0xe592…1564 (SwapRouter)
7008743084
0xf9e2…79f2 (OwnableDelegateProxy, AuthenticatedProxy)
6079520319
0xdac1…1ec7 (Stablecoin, TetherToken, Tether USD (USDT), https://tether.to/, Token Contract)
5852145051
0xc02a…6cc2 (Stablecoin, https://weth.io/, 0x Ecosystem, Wrapped Ether (WETH), WrappedEther, WETH9, Token Contract)
4053090385
0xa0b8…eb48 (FiatTokenProxy, Stablecoin, https://www.centre.io/, Token Contract, USD Coin (USDC))
3707106009
0x881d…300c (Swap Router, MetaMask)
3449291623
0x1111…aa26 (1inch.exchange, AggregationRouterV3, 1inch V3)
3244457562
0xa232…bdcf (FiatTokenV2_1)
2889125002
0x74de…6631
2782862627
0xa540…77c1 (WyvernProxyRegistry, OwnableDelegateProxy, OpenSea.io_Registry)
2755753529
0x2723…1fd2
2710063540
0x1a2a…54f2 (Axie Infinity, MainchainGatewayProxy, Ronin Bridge)
2616344554
0x8407…f21e (MainchainGatewayManager)
1936169943
0xd9e1…8b9f (UniswapV2Router02, SushiSwap)
1883789659
0xdef1…5eff (ZeroEx)
1813129921
0x4fed…f833
1808322037
0xfbdd…e655
1771875935
0x013c…5557 (ServiceV14)

By calls received

634857
0xc02a…6cc2 (Stablecoin, https://weth.io/, 0x Ecosystem, Wrapped Ether (WETH), WrappedEther, WETH9, Token Contract)
282109
0xa540…77c1 (WyvernProxyRegistry, OwnableDelegateProxy, OpenSea.io_Registry)
241696
0xdac1…1ec7 (Stablecoin, TetherToken, Tether USD (USDT), https://tether.to/, Token Contract)
187570
0xa232…bdcf (FiatTokenV2_1)
187553
0xa0b8…eb48 (FiatTokenProxy, Stablecoin, https://www.centre.io/, Token Contract, USD Coin (USDC))
112538
0x7be8…d12b (WyvernExchange, Marketplace, OpenSea.io, Collectibles, OwnableDelegateProxy, NFT)
104221
0xe592…1564 (SwapRouter)
90066
0x7a25…488d (UniswapV2Router02, Router 2)
89338
0xf9e2…79f2 (OwnableDelegateProxy, AuthenticatedProxy)
76035
0x33e7…5ad2 (Registry)

By calls emitted

338091
0x7be8…d12b (WyvernExchange, Marketplace, OpenSea.io, Collectibles, OwnableDelegateProxy, NFT)
312347
0x7a25…488d (UniswapV2Router02, Router 2)
187553
0xa0b8…eb48 (FiatTokenProxy, Stablecoin, https://www.centre.io/, Token Contract, USD Coin (USDC))
143903
0x1a2a…54f2 (Axie Infinity, MainchainGatewayProxy, Ronin Bridge)
135378
0xe592…1564 (SwapRouter)
91785
0x1111…aa26 (1inch.exchange, AggregationRouterV3, 1inch V3)
83102
0x74de…6631
80379
0x2723…1fd2
71103
0xfbdd…e655
61809
0xdef1…5eff (ZeroEx)

By balance

7682946 eth
0x0000…05fa (DepositContract)
6973226 eth
0xc02a…6cc2 (Stablecoin, https://weth.io/, 0x Ecosystem, Wrapped Ether (WETH), WrappedEther, WETH9, Token Contract)
1688934 eth
0x4ddc…0ed5 (cETH Token, CEther, DeFi, Compound Ether (cETH), Token Contract)
653157 eth
0x011b…d515 (TransparentUpgradeableProxy, Arbitrum, Bridge, Layer 2)
521822 eth
0xdf9e…3d7f (ActivePool)
504898 eth
0x8484…2b30 (Ether Bridge, Matic Network, Polygon (Matic), EtherPredicateProxy, Ether Predicate Proxy)
482542 eth
0xdc24…7022 (Vyper_contract)
411786 eth
0xa929…490c (Bridge)
391868 eth
0xde0b…7bae (Ethereum Foundation, EthDev)
390741 eth
0x07ee…3eca (Contract 1, Exchange, Gemini)

About

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

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