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 20109769.

You can also simulate arbitrary calls.

Top active contracts

Aggregate measures over the last 10000 blocks.

By gas usage

22101614307
0x3fc9…7fad (UniversalRouter)
10821016355
0xc02a…6cc2 (WrappedEther, https://weth.io/, Stablecoin, Token Contract, Wrapped Ether (WETH), WETH9, 0x Ecosystem)
6403730224
0xdac1…1ec7 (https://tether.to/, Tether USD (USDT), Stablecoin, Token Contract, TetherToken, Bitfinex)
5268054869
0xdef1…5eff (ZeroEx, Zerox Exchange)
5231335564
0x7a25…488d (Router 2, UniswapV2Router02)
4285283379
0x44a6…92a2 (TransformERC20Feature)
3864006676
0xe37e…bd09
3533052088
0x1111…0582 (AggregationRouterV5)
3514163928
0x0000…8ba3 (Permit2)
3334415570
0x3328…9c49
3245153441
0x22f9…8c18 (FlashWallet)
3198746967
0x2414…d6cc
3143020981
0x881d…300c (Swap Router, MetaMask, MetaSwap)
3044901346
0xa0b8…eb48 (USD Coin (USDC), Stablecoin, https://www.centre.io/, Token Contract, FiatTokenProxy)
2949217624
0x80a6…5d9e
2861173060
0x46af…a8b5
2475937686
0x0645…6fb8 (XENCrypto)
2438874166
0xc364…fe88 (NonfungiblePositionManager)
2428986310
0x4350…02dd (FiatTokenV2_2)
2400477064
0x74de…6631 (Spender)

By calls received

1429316
0xc02a…6cc2 (WrappedEther, https://weth.io/, Stablecoin, Token Contract, Wrapped Ether (WETH), WETH9, 0x Ecosystem)
311592
0xdac1…1ec7 (https://tether.to/, Tether USD (USDT), Stablecoin, Token Contract, TetherToken, Bitfinex)
192161
0xa0b8…eb48 (USD Coin (USDC), Stablecoin, https://www.centre.io/, Token Contract, FiatTokenProxy)
192053
0x4350…02dd (FiatTokenV2_2)
178830
0x3fc9…7fad (UniversalRouter)
114665
0x4bba…4a4d (Math)
88214
0x0000…8ba3 (Permit2)
87059
0x22f9…8c18 (FlashWallet)
83521
0xbe0e…226b (AethirToken)
71551
0x7a25…488d (Router 2, UniswapV2Router02)

By calls emitted

1068323
0x3fc9…7fad (UniversalRouter)
196855
0x7a25…488d (Router 2, UniswapV2Router02)
192422
0xa0b8…eb48 (USD Coin (USDC), Stablecoin, https://www.centre.io/, Token Contract, FiatTokenProxy)
178917
0x22f9…8c18 (FlashWallet)
168229
0x3328…9c49
167991
0xdef1…5eff (ZeroEx, Zerox Exchange)
167589
0x06a9…b19a (ERC1967Proxy)
148352
0x80a6…5d9e
114709
0x0645…6fb8 (XENCrypto)
111652
0xe37e…bd09

By balance

46298362 eth
0x0000…05fa (DepositContract)
2890796 eth
0xc02a…6cc2 (WrappedEther, https://weth.io/, Stablecoin, Token Contract, Wrapped Ether (WETH), WETH9, 0x Ecosystem)
1776937 eth
0x8315…ed3a
502536 eth
0x4904…e97e (Proxy)
493186 eth
0xbeb5…06ed (Proxy)
322707 eth
0xafcd…c5da
309273 eth
0xde0b…7bae (Ethereum Foundation, EthDev)
196595 eth
0xd19d…876f
163529 eth
0x3088…f216 (UUPSProxy)
161188 eth
0x8484…2b30 (Polygon (Matic), Ether Predicate Proxy, Matic Network, EtherPredicateProxy, Ether Bridge)

About

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

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