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 12295889.

You can also simulate arbitrary calls.

Top active contracts

Aggregate measures over the last 10000 blocks.

By gas usage

29325238159
0x7a25…488d (UniswapV2Router02, Router 2)
9804292357
0xdac1…1ec7 (Token Contract, https://tether.to/, Stablecoin, TetherToken, Tether USD (USDT))
8893378611
0xc02a…6cc2 (WETH9, https://weth.io/, Wrapped Ether (WETH), Token Contract, Stablecoin, 0x Ecosystem, WrappedEther)
4412737161
0xa0b8…eb48 (FiatTokenProxy, Token Contract, Stablecoin, https://www.centre.io/, USD Coin (USDC))
3521242842
0xb727…78a2 (FiatTokenV2)
3040581082
0xdb38…5944 (Dex, Router, 1inch.exchange)
2914767857
0x1111…aa26 (AggregationRouterV3, 1inch V3, 1inch.exchange)
2310326990
0x881d…300c (Swap Router, MetaMask)
1860007949
0x74de…6631
1547275859
0xf82d…9f88
1415573767
0x77fb…0ce0
1401353238
0x0d4a…1852
1364481827
0x811b…954f
1288188432
0x629a…6205 (SorareTokens)
1257663780
0xd274…4937
1135444911
0xa2b4…817d (KishuInu)
1134432171
0xdef1…5eff (ZeroEx)
1116874044
0xd9e1…8b9f (SushiSwap, UniswapV2Router02)
1047285828
0xaeb9…56b2
962338788
0x95ad…c4ce

By calls received

912610
0xc02a…6cc2 (WETH9, https://weth.io/, Wrapped Ether (WETH), Token Contract, Stablecoin, 0x Ecosystem, WrappedEther)
394632
0xdac1…1ec7 (Token Contract, https://tether.to/, Stablecoin, TetherToken, Tether USD (USDT))
279474
0x7a25…488d (UniswapV2Router02, Router 2)
172799
0xb727…78a2 (FiatTokenV2)
172783
0xa0b8…eb48 (FiatTokenProxy, Token Contract, Stablecoin, https://www.centre.io/, USD Coin (USDC))
74336
0x77fb…0ce0
71413
0x95ad…c4ce
59232
0x0d4a…1852
56229
0x811b…954f
55457
0x6b17…1d0f (Token Contract, Dai Stablecoin (DAI), Maker, DeFi)

By calls emitted

1032369
0x7a25…488d (UniswapV2Router02, Router 2)
172783
0xa0b8…eb48 (FiatTokenProxy, Token Contract, Stablecoin, https://www.centre.io/, USD Coin (USDC))
78988
0xc02a…6cc2 (WETH9, https://weth.io/, Wrapped Ether (WETH), Token Contract, Stablecoin, 0x Ecosystem, WrappedEther)
75529
0x811b…954f
74266
0x0d4a…1852
73906
0xdb38…5944 (Dex, Router, 1inch.exchange)
70348
0x1111…aa26 (AggregationRouterV3, 1inch V3, 1inch.exchange)
60593
0xf82d…9f88
56082
0x0000…9f56
52713
0x74de…6631

By balance

7166736 eth
0xc02a…6cc2 (WETH9, https://weth.io/, Wrapped Ether (WETH), Token Contract, Stablecoin, 0x Ecosystem, WrappedEther)
3924386 eth
0x0000…05fa (DepositContract)
1716901 eth
0x4ddc…0ed5 (Compound Ether (cETH), CEther, Token Contract, DeFi)
1580010 eth
0xc61b…193c
1154855 eth
0xdf9e…3d7f (ActivePool)
427273 eth
0x3dfd…76d3 (Lending Pool Core V1, Loans, LendingPoolLiquidationManager, Aave)
398652 eth
0xa929…490c (Bridge)
307182 eth
0x1db9…fcf4
235444 eth
0xc542…4567 (Vyper_contract)
193875 eth
0xf774…730b

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.