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 19932387.

You can also simulate arbitrary calls.

Top active contracts

Aggregate measures over the last 10000 blocks.

By gas usage

23258699703
0x3fc9…7fad (UniversalRouter)
11696568194
0xc02a…6cc2 (WrappedEther, https://weth.io/, Stablecoin, Token Contract, Wrapped Ether (WETH), WETH9, 0x Ecosystem)
6866958729
0xdac1…1ec7 (https://tether.to/, Tether USD (USDT), Stablecoin, Token Contract, TetherToken, Bitfinex)
5781985042
0xdef1…5eff (ZeroEx, Zerox Exchange)
5648587364
0xe37e…bd09
5236661839
0x7a25…488d (Router 2, UniswapV2Router02)
4887839845
0x3328…9c49
4690504407
0x2414…d6cc
4650769203
0x1111…0582 (AggregationRouterV5)
4492196581
0x44a6…92a2 (TransformERC20Feature)
4293435443
0x80a6…5d9e
4166966473
0x46af…a8b5
4076669931
0xa0b8…eb48 (USD Coin (USDC), Stablecoin, https://www.centre.io/, Token Contract, FiatTokenProxy)
3938513676
0x0000…8ba3 (Permit2)
3924678745
0x881d…300c (Swap Router, MetaMask, MetaSwap)
3393113800
0x22f9…8c18 (FlashWallet)
3234995955
0x4350…02dd (FiatTokenV2_2)
3099301308
0x74de…6631 (Spender)
2544229139
0x0645…6fb8 (XENCrypto)
2156108783
0x2fd0…49f0 (FillQuoteTransformer)

By calls received

1547516
0xc02a…6cc2 (WrappedEther, https://weth.io/, Stablecoin, Token Contract, Wrapped Ether (WETH), WETH9, 0x Ecosystem)
338494
0xdac1…1ec7 (https://tether.to/, Tether USD (USDT), Stablecoin, Token Contract, TetherToken, Bitfinex)
247605
0xa0b8…eb48 (USD Coin (USDC), Stablecoin, https://www.centre.io/, Token Contract, FiatTokenProxy)
247599
0x4350…02dd (FiatTokenV2_2)
189631
0x3fc9…7fad (UniversalRouter)
158947
0x4bba…4a4d (Math)
95988
0x0000…8ba3 (Permit2)
91850
0xe37e…bd09
91646
0x22f9…8c18 (FlashWallet)
82339
0x0645…6fb8 (XENCrypto)

By calls emitted

1106078
0x3fc9…7fad (UniversalRouter)
248140
0xa0b8…eb48 (USD Coin (USDC), Stablecoin, https://www.centre.io/, Token Contract, FiatTokenProxy)
223490
0x3328…9c49
213355
0x7a25…488d (Router 2, UniswapV2Router02)
211244
0x80a6…5d9e
187085
0xdef1…5eff (ZeroEx, Zerox Exchange)
186742
0x22f9…8c18 (FlashWallet)
163313
0xe37e…bd09
158975
0x0645…6fb8 (XENCrypto)
139189
0x1111…0582 (AggregationRouterV5)

By balance

45000573 eth
0x0000…05fa (DepositContract)
2929323 eth
0xc02a…6cc2 (WrappedEther, https://weth.io/, Stablecoin, Token Contract, Wrapped Ether (WETH), WETH9, 0x Ecosystem)
1757874 eth
0x8315…ed3a
472054 eth
0xbeb5…06ed (Proxy)
468468 eth
0x4904…e97e (Proxy)
357707 eth
0xafcd…c5da
309273 eth
0xde0b…7bae (Ethereum Foundation, EthDev)
208715 eth
0xdf9e…3d7f (ActivePool)
205797 eth
0x3088…f216 (UUPSProxy)
171765 eth
0xd19d…876f

About

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

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