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 20396203.

You can also simulate arbitrary calls.

Top active contracts

Aggregate measures over the last 10000 blocks.

By gas usage

17462942569
0x3fc9…7fad (UniversalRouter)
11276828056
0xc02a…6cc2 (WrappedEther, https://weth.io/, Stablecoin, Token Contract, Wrapped Ether (WETH), WETH9, 0x Ecosystem)
8225104742
0xe37e…bd09
7125664777
0x7a25…488d (Router 2, UniswapV2Router02)
6740941778
0xdac1…1ec7 (https://tether.to/, Tether USD (USDT), Stablecoin, Token Contract, TetherToken, Bitfinex)
4997659303
0x0a25…fa59 (XENTorrent)
4973770042
0x1111…0582 (AggregationRouterV5)
3816375592
0xa0b8…eb48 (USD Coin (USDC), Stablecoin, https://www.centre.io/, Token Contract, FiatTokenProxy)
3476543379
0x8888…f946 (PendleRouterV4)
3375220838
0xf3de…9127
3353495670
0x80a6…5d9e
3333513358
0x0645…6fb8 (XENCrypto)
3252421817
0x46af…a8b5
3073958775
0x3328…9c49
3051686804
0x4350…02dd (FiatTokenV2_2)
2943503129
0x2414…d6cc
2855927796
0x0000…8ba3 (Permit2)
2805833447
0x881d…300c (Swap Router, MetaMask, MetaSwap)
2661994024
0xdef1…5eff (ZeroEx, Zerox Exchange)
2178644671
0x74de…6631 (Spender)

By calls received

1501242
0xc02a…6cc2 (WrappedEther, https://weth.io/, Stablecoin, Token Contract, Wrapped Ether (WETH), WETH9, 0x Ecosystem)
337686
0xdac1…1ec7 (https://tether.to/, Tether USD (USDT), Stablecoin, Token Contract, TetherToken, Bitfinex)
238444
0x4350…02dd (FiatTokenV2_2)
238304
0xa0b8…eb48 (USD Coin (USDC), Stablecoin, https://www.centre.io/, Token Contract, FiatTokenProxy)
142702
0x3fc9…7fad (UniversalRouter)
129530
0x4bba…4a4d (Math)
116344
0xe37e…bd09
90941
0x7a25…488d (Router 2, UniswapV2Router02)
84017
0x0a25…fa59 (XENTorrent)
75593
0x0000…8ba3 (Permit2)

By calls emitted

859265
0x3fc9…7fad (UniversalRouter)
271095
0x7a25…488d (Router 2, UniswapV2Router02)
239004
0xa0b8…eb48 (USD Coin (USDC), Stablecoin, https://www.centre.io/, Token Contract, FiatTokenProxy)
210305
0xe37e…bd09
169382
0x80a6…5d9e
166074
0xf3de…9127
152734
0x3328…9c49
129556
0x0645…6fb8 (XENCrypto)
120743
0x1111…0582 (AggregationRouterV5)
113644
0xc02a…6cc2 (WrappedEther, https://weth.io/, Stablecoin, Token Contract, Wrapped Ether (WETH), WETH9, 0x Ecosystem)

By balance

48423773 eth
0x0000…05fa (DepositContract)
2726199 eth
0xc02a…6cc2 (WrappedEther, https://weth.io/, Stablecoin, Token Contract, Wrapped Ether (WETH), WETH9, 0x Ecosystem)
1891211 eth
0x8315…ed3a
537431 eth
0x4904…e97e (Proxy)
502006 eth
0xbeb5…06ed (Proxy)
308273 eth
0xde0b…7bae (Ethereum Foundation, EthDev)
294207 eth
0xafcd…c5da
243000 eth
0x2208…3a9d
213925 eth
0xd19d…876f
208442 eth
0x3088…f216 (UUPSProxy)

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.