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 12645605.

You can also simulate arbitrary calls.

Top active contracts

Aggregate measures over the last 10000 blocks.

By gas usage

25854441851
0x7a25…488d (Router 2, UniswapV2Router02)
8429537093
0xc02a…6cc2 (Wrapped Ether (WETH), 0x Ecosystem, WrappedEther, https://weth.io/, Token Contract, Stablecoin, WETH9)
8219718433
0xdac1…1ec7 (https://tether.to/, Tether USD (USDT), TetherToken, Token Contract, Stablecoin)
8036330130
0xe592…1564 (SwapRouter)
7309176844
0xfd3d…0626
4714434482
0xa0b8…eb48 (FiatTokenProxy, https://www.centre.io/, USD Coin (USDC), Token Contract, Stablecoin)
4318452908
0x1111…aa26 (1inch.exchange, 1inch V3, AggregationRouterV3)
3775217897
0xa232…bdcf (FiatTokenV2_1)
3732822742
0x881d…300c (Swap Router, MetaMask)
3460900239
0xc364…fe88 (NonfungiblePositionManager)
2989527463
0x74de…6631
2675161281
0x0000…fa1c (1inch.exchange, ChiToken, CHI Token, Chi Gastoken by 1inch (CHI))
2256703245
0xdef1…5eff (ZeroEx)
2159883653
0x7be8…d12b (OwnableDelegateProxy, OpenSea.io, Marketplace, Collectibles, WyvernExchange, NFT)
2046670728
0xa57b…d6cf
1910661810
0xa0c6…7c77 (RootChainManagerProxy, Bridge, Matic Network)
1805411707
0x296a…631b (RootChainManager)
1461499305
0xd9e1…8b9f (UniswapV2Router02, SushiSwap)
1405593520
0x7d27…c7a9 (InitializableImmutableAdminUpgradeabilityProxy)
1397581685
0x4fed…f833

By calls received

964920
0xc02a…6cc2 (Wrapped Ether (WETH), 0x Ecosystem, WrappedEther, https://weth.io/, Token Contract, Stablecoin, WETH9)
345325
0xdac1…1ec7 (https://tether.to/, Tether USD (USDT), TetherToken, Token Contract, Stablecoin)
223316
0xa232…bdcf (FiatTokenV2_1)
223302
0xa0b8…eb48 (FiatTokenProxy, https://www.centre.io/, USD Coin (USDC), Token Contract, Stablecoin)
218183
0x7a25…488d (Router 2, UniswapV2Router02)
109244
0xe592…1564 (SwapRouter)
76758
0xfd3d…0626
67938
0x6b17…1d0f (Maker, DeFi, Token Contract, Dai Stablecoin (DAI))
45372
0x7d1a…ebb0 (MaticToken, Matic Network, Token Contract, Matic Token (MATIC))
40036
0xa540…77c1 (OwnableDelegateProxy, WyvernProxyRegistry, OpenSea.io_Registry)

By calls emitted

774070
0x7a25…488d (Router 2, UniswapV2Router02)
223302
0xa0b8…eb48 (FiatTokenProxy, https://www.centre.io/, USD Coin (USDC), Token Contract, Stablecoin)
146011
0xfd3d…0626
141142
0xe592…1564 (SwapRouter)
106275
0x0000…9f56
88319
0xa57b…d6cf
85817
0x0000…fa1c (1inch.exchange, ChiToken, CHI Token, Chi Gastoken by 1inch (CHI))
79909
0xc02a…6cc2 (Wrapped Ether (WETH), 0x Ecosystem, WrappedEther, https://weth.io/, Token Contract, Stablecoin, WETH9)
78182
0x7d27…c7a9 (InitializableImmutableAdminUpgradeabilityProxy)
77352
0xdef1…5eff (ZeroEx)

By balance

6385740 eth
0xc02a…6cc2 (Wrapped Ether (WETH), 0x Ecosystem, WrappedEther, https://weth.io/, Token Contract, Stablecoin, WETH9)
5536130 eth
0x0000…05fa (DepositContract)
1112204 eth
0x4ddc…0ed5 (DeFi, Compound Ether (cETH), Token Contract, cETH Token, CEther)
971639 eth
0xdf9e…3d7f (ActivePool)
957130 eth
0x8484…2b30 (Ether Predicate Proxy, Matic Network, EtherPredicateProxy)
800010 eth
0xc61b…193c
399083 eth
0xde0b…7bae (EthDev, Ethereum Foundation)
384424 eth
0xa929…490c (Bridge)
382691 eth
0xdc24…7022 (Vyper_contract)
203639 eth
0xc542…4567 (Vyper_contract)

About

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

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