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 13436991.

You can also simulate arbitrary calls.

Top active contracts

Aggregate measures over the last 10000 blocks.

By gas usage

12692710721
0x7be8…d12b (OwnableDelegateProxy, OpenSea.io, Collectibles, Marketplace, NFT, WyvernExchange)
11737141466
0x7a25…488d (UniswapV2Router02, Router 2)
7682367799
0xe592…1564 (SwapRouter)
6117839971
0xc02a…6cc2 (Stablecoin, Token Contract, https://weth.io/, WrappedEther, WETH9, Wrapped Ether (WETH), 0x Ecosystem)
5974071773
0xdac1…1ec7 (Bitfinex, Stablecoin, Token Contract, Tether USD (USDT), TetherToken, https://tether.to/)
5684520011
0xf9e2…79f2 (OwnableDelegateProxy, AuthenticatedProxy)
3980527722
0x2723…1fd2
3903378662
0x1111…aa26 (1inch.exchange, 1inch V3, AggregationRouterV3)
3876262794
0xa0b8…eb48 (FiatTokenProxy, Stablecoin, Token Contract, https://www.centre.io/, USD Coin (USDC))
3247046758
0x881d…300c (Swap Router, MetaMask)
3101125856
0xa232…bdcf (FiatTokenV2_1)
2933160530
0xfbdd…e655
2877901875
0x4798…8ddd
2817465616
0xd9e1…8b9f (SushiSwap, UniswapV2Router02)
2511845987
0x74de…6631
2243380355
0xa540…77c1 (OwnableDelegateProxy, OpenSea.io_Registry, WyvernProxyRegistry)
2033379928
0xdef1…5eff (ZeroEx)
1653133785
0xc364…fe88 (NonfungiblePositionManager)
1648514240
0x4fed…f833
1488426693
0x1a2a…54f2 (Axie Infinity, Ronin Bridge, MainchainGatewayProxy)

By calls received

664876
0xc02a…6cc2 (Stablecoin, Token Contract, https://weth.io/, WrappedEther, WETH9, Wrapped Ether (WETH), 0x Ecosystem)
234744
0xdac1…1ec7 (Bitfinex, Stablecoin, Token Contract, Tether USD (USDT), TetherToken, https://tether.to/)
209580
0xa540…77c1 (OwnableDelegateProxy, OpenSea.io_Registry, WyvernProxyRegistry)
175878
0xa232…bdcf (FiatTokenV2_1)
175866
0xa0b8…eb48 (FiatTokenProxy, Stablecoin, Token Contract, https://www.centre.io/, USD Coin (USDC))
106573
0xe592…1564 (SwapRouter)
102982
0x7a25…488d (UniswapV2Router02, Router 2)
78935
0x7be8…d12b (OwnableDelegateProxy, OpenSea.io, Collectibles, Marketplace, NFT, WyvernExchange)
68639
0xf9e2…79f2 (OwnableDelegateProxy, AuthenticatedProxy)
65716
0x2723…1fd2

By calls emitted

358150
0x7a25…488d (UniswapV2Router02, Router 2)
259560
0x7be8…d12b (OwnableDelegateProxy, OpenSea.io, Collectibles, Marketplace, NFT, WyvernExchange)
175866
0xa0b8…eb48 (FiatTokenProxy, Stablecoin, Token Contract, https://www.centre.io/, USD Coin (USDC))
138041
0xe592…1564 (SwapRouter)
118465
0xfbdd…e655
116201
0x2723…1fd2
100222
0xd9e1…8b9f (SushiSwap, UniswapV2Router02)
100092
0x1111…aa26 (1inch.exchange, 1inch V3, AggregationRouterV3)
85666
0x1a50…b812
80028
0x1a2a…54f2 (Axie Infinity, Ronin Bridge, MainchainGatewayProxy)

By balance

7974914 eth
0x0000…05fa (DepositContract)
7933327 eth
0xc02a…6cc2 (Stablecoin, Token Contract, https://weth.io/, WrappedEther, WETH9, Wrapped Ether (WETH), 0x Ecosystem)
1530764 eth
0x4ddc…0ed5 (cETH Token, Token Contract, DeFi, CEther, Compound Ether (cETH))
541187 eth
0xdf9e…3d7f (ActivePool)
534024 eth
0xdc24…7022 (Vyper_contract)
438609 eth
0x8484…2b30 (Matic Network, EtherPredicateProxy, Ether Predicate Proxy, Polygon (Matic), Ether Bridge)
411786 eth
0xa929…490c (Bridge)
375868 eth
0xde0b…7bae (EthDev, Ethereum Foundation)
306839 eth
0x011b…d515 (Arbitrum, TransparentUpgradeableProxy, Layer 2, Bridge)
211310 eth
0xbddf…12be

About

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

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