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 21231917.

You can also simulate arbitrary calls.

Top active contracts

Aggregate measures over the last 10000 blocks.

By gas usage

17975770801
0x3fc9…7fad (UniversalRouter)
10869669422
0xc02a…6cc2 (WrappedEther, https://weth.io/, Stablecoin, Token Contract, Wrapped Ether (WETH), WETH9, 0x Ecosystem)
7988230467
0xdac1…1ec7 (https://tether.to/, Tether USD (USDT), Stablecoin, Token Contract, TetherToken, Bitfinex)
6527587912
0x3451…e812
5514049190
0x1111…0582 (AggregationRouterV5)
5254113997
0x7a25…488d (Router 2, UniswapV2Router02)
4553731989
0xdef1…5eff (ZeroEx, Zerox Exchange)
4377495651
0xa0b8…eb48 (USD Coin (USDC), Stablecoin, https://www.centre.io/, Token Contract, FiatTokenProxy)
3772189928
0x881d…300c (Swap Router, MetaMask, MetaSwap)
3626808079
0x44a6…92a2 (TransformERC20Feature)
3498544295
0x4350…02dd (FiatTokenV2_2)
2973098867
0x0000…8ba3 (Permit2)
2912697848
0x74de…6631 (Spender)
2768991358
0x22f9…8c18 (FlashWallet)
2714860063
0x3328…9c49
2601826773
0x35fc…b34e
2508451932
0xf3de…9127
2254806242
0x1111…2a65 (AggregationRouterV6)
2241517756
0x80a6…5d9e
2168979189
0x46af…a8b5

By calls received

1442046
0xc02a…6cc2 (WrappedEther, https://weth.io/, Stablecoin, Token Contract, Wrapped Ether (WETH), WETH9, 0x Ecosystem)
373097
0xdac1…1ec7 (https://tether.to/, Tether USD (USDT), Stablecoin, Token Contract, TetherToken, Bitfinex)
258578
0x4350…02dd (FiatTokenV2_2)
258486
0xa0b8…eb48 (USD Coin (USDC), Stablecoin, https://www.centre.io/, Token Contract, FiatTokenProxy)
147196
0x3fc9…7fad (UniversalRouter)
101246
0x3451…e812
75591
0x0000…8ba3 (Permit2)
72243
0x22f9…8c18 (FlashWallet)
67829
0x7a25…488d (Router 2, UniswapV2Router02)
49712
0x1111…0582 (AggregationRouterV5)

By calls emitted

843773
0x3fc9…7fad (UniversalRouter)
258935
0xa0b8…eb48 (USD Coin (USDC), Stablecoin, https://www.centre.io/, Token Contract, FiatTokenProxy)
212458
0x7a25…488d (Router 2, UniswapV2Router02)
181707
0x3451…e812
145824
0x22f9…8c18 (FlashWallet)
145057
0x1111…0582 (AggregationRouterV5)
143642
0xdef1…5eff (ZeroEx, Zerox Exchange)
133347
0x06a9…b19a (ERC1967Proxy)
133279
0x3328…9c49
122079
0x80a6…5d9e

By balance

53360612 eth
0x0000…05fa (DepositContract)
2972540 eth
0xc02a…6cc2 (WrappedEther, https://weth.io/, Stablecoin, Token Contract, Wrapped Ether (WETH), WETH9, 0x Ecosystem)
1177007 eth
0x8315…ed3a
859107 eth
0x4904…e97e (Proxy)
510638 eth
0xbeb5…06ed (Proxy)
269274 eth
0xde0b…7bae (Ethereum Foundation, EthDev)
236207 eth
0xafcd…c5da
153546 eth
0x8484…2b30 (Polygon (Matic), Ether Predicate Proxy, Matic Network, EtherPredicateProxy, Ether Bridge)
146500 eth
0xa160…f291 (TornadoCash_eth, 100 ETH, Tornado.cash)
137478 eth
0xd19d…876f

About

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

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