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 19343607.

You can also simulate arbitrary calls.

Top active contracts

Aggregate measures over the last 10000 blocks.

By gas usage

17631312150
0x3fc9…7fad (UniversalRouter)
7827501471
0xc02a…6cc2 (Token Contract, WETH9, Wrapped Ether (WETH), 0x Ecosystem, https://weth.io/, Stablecoin, WrappedEther)
7548421873
0x5f6a…a47d
7422924662
0xdac1…1ec7 (Token Contract, Bitfinex, Tether USD (USDT), https://tether.to/, Stablecoin, TetherToken)
7379216782
0x0bd8…e561
5342816457
0x3a05…9115
4943215634
0x7a20…619a
4448341816
0x0ec6…b6cb
4416682704
0x1111…0582 (AggregationRouterV5)
3949728037
0xd7bf…fb32
3606076463
0xdef1…5eff (ZeroEx, Zerox Exchange)
3386249232
0x0000…8ba3 (Permit2)
3377381456
0xa0b8…eb48 (https://www.centre.io/, USD Coin (USDC), FiatTokenProxy, Token Contract, Stablecoin)
3361947964
0x5d44…e9d0
3050814135
0x84ef…a836
2982901508
0x881d…300c (MetaMask, MetaSwap, Swap Router)
2708934232
0x6974…c524
2668978961
0x4350…02dd (FiatTokenV2_2)
2538200765
0x7a25…488d (Router 2, UniswapV2Router02)
2528319566
0xd2c2…ff22

By calls received

998421
0xc02a…6cc2 (Token Contract, WETH9, Wrapped Ether (WETH), 0x Ecosystem, https://weth.io/, Stablecoin, WrappedEther)
322167
0xdac1…1ec7 (Token Contract, Bitfinex, Tether USD (USDT), https://tether.to/, Stablecoin, TetherToken)
180670
0x4350…02dd (FiatTokenV2_2)
180553
0xa0b8…eb48 (https://www.centre.io/, USD Coin (USDC), FiatTokenProxy, Token Contract, Stablecoin)
175465
0x3fc9…7fad (UniversalRouter)
145835
0x3642…e883
93736
0x9807…c8fe
93733
0xf2f6…9525
82584
0x0000…8ba3 (Permit2)
70642
0x2b33…4425 (Kernel)

By calls emitted

650173
0x3fc9…7fad (UniversalRouter)
212725
0x9807…c8fe
181043
0xa0b8…eb48 (https://www.centre.io/, USD Coin (USDC), FiatTokenProxy, Token Contract, Stablecoin)
158621
0x0ec6…b6cb
154091
0x3a05…9115
145810
0x1111…0582 (AggregationRouterV5)
139273
0xae7a…fe84 (Eth2 Depositor, Staking, stETH (stETH))
129269
0xdef1…5eff (ZeroEx, Zerox Exchange)
110695
0x3328…9c49
107837
0x7a25…488d (Router 2, UniswapV2Router02)

By balance

40363786 eth
0x0000…05fa (DepositContract)
3037032 eth
0xc02a…6cc2 (Token Contract, WETH9, Wrapped Ether (WETH), 0x Ecosystem, https://weth.io/, Stablecoin, WrappedEther)
1560517 eth
0x8315…ed3a
361576 eth
0xbeb5…06ed (Proxy)
310273 eth
0xde0b…7bae (Ethereum Foundation, EthDev)
253453 eth
0xdf9e…3d7f (ActivePool)
204201 eth
0x3240…0324 (DiamondProxy)
196469 eth
0xe25a…436e
174592 eth
0x8484…2b30 (Ether Bridge, Matic Network, Polygon (Matic), Ether Predicate Proxy, EtherPredicateProxy)
171821 eth
0x4904…e97e (Proxy)

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.