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 16098043.

You can also simulate arbitrary calls.

Top active contracts

Aggregate measures over the last 10000 blocks.

By gas usage

23981661252
0x68b3…fc45 (SwapRouter02)
20198436070
0x0645…6fb8 (XENCrypto)
19981904886
0x0de8…f628 (CoinTool_App)
8842034920
0x0a90…0eba
7836932310
0x0000…e581 (Seaport)
6359072562
0x7a25…488d (UniswapV2Router02, Router 2)
6037436228
0xc02a…6cc2 (Stablecoin, Token Contract, 0x Ecosystem, WETH9, WrappedEther, Wrapped Ether (WETH), https://weth.io/)
5656030897
0xdac1…1ec7 (Tether USD (USDT), Bitfinex, Stablecoin, Token Contract, TetherToken, https://tether.to/)
4667939454
0xa0b8…eb48 (Stablecoin, Token Contract, https://www.centre.io/, USD Coin (USDC), FiatTokenProxy)
3838878127
0x1e00…3c71 (Conduit)
3818230835
0xa232…bdcf (FiatTokenV2_1)
3330639258
0x5322…3f20
3220245800
0x881d…300c (Swap Router, MetaMask)
2825361134
0x0000…5127 (ERC1967Proxy)
2774433536
0x031a…47c6 (BlurExchange)
2542911582
0x39da…d541 (BlurSwap)
2522919495
0x74de…6631
2188843839
0x1e7e…b68a
2106361448
0xc364…fe88 (NonfungiblePositionManager)
2064204986
0x2f84…0479 (XenProxy)

By calls received

694653
0xc02a…6cc2 (Stablecoin, Token Contract, 0x Ecosystem, WETH9, WrappedEther, Wrapped Ether (WETH), https://weth.io/)
336671
0x4bba…4a4d (Math)
241831
0xdac1…1ec7 (Tether USD (USDT), Bitfinex, Stablecoin, Token Contract, TetherToken, https://tether.to/)
233576
0xa232…bdcf (FiatTokenV2_1)
233553
0xa0b8…eb48 (Stablecoin, Token Contract, https://www.centre.io/, USD Coin (USDC), FiatTokenProxy)
213046
0x68b3…fc45 (SwapRouter02)
173323
0x0645…6fb8 (XENCrypto)
71178
0x7a25…488d (UniswapV2Router02, Router 2)
70391
0x0de8…f628 (CoinTool_App)
57582
0x004c…0c00 (PausableZone)

By calls emitted

494227
0x68b3…fc45 (SwapRouter02)
336665
0x0645…6fb8 (XENCrypto)
233379
0xa0b8…eb48 (Stablecoin, Token Contract, https://www.centre.io/, USD Coin (USDC), FiatTokenProxy)
213632
0x7a25…488d (UniswapV2Router02, Router 2)
127751
0x0000…e581 (Seaport)
123847
0x0de8…f628 (CoinTool_App)
96646
0x1e00…3c71 (Conduit)
89334
0x74de…6631
68422
0x0000…5127 (ERC1967Proxy)
60809
0xc02a…6cc2 (Stablecoin, Token Contract, 0x Ecosystem, WETH9, WrappedEther, Wrapped Ether (WETH), https://weth.io/)

By balance

15456471 eth
0x0000…05fa (DepositContract)
3707401 eth
0xc02a…6cc2 (Stablecoin, Token Contract, 0x Ecosystem, WETH9, WrappedEther, Wrapped Ether (WETH), https://weth.io/)
796658 eth
0x8315…ed3a
348877 eth
0xdf9e…3d7f (ActivePool)
339271 eth
0xde0b…7bae (Ethereum Foundation, EthDev)
338872 eth
0x4ddc…0ed5 (CEther, cETH Token, Token Contract, Compound Ether (cETH), DeFi)
272696 eth
0x07ee…3eca (Exchange, Gemini, Contract 1)
270556 eth
0x8484…2b30 (EtherPredicateProxy, Polygon (Matic), Ether Bridge, Ether Predicate Proxy, Matic Network)
262567 eth
0x756d…373c
250890 eth
0xdc24…7022 (Vyper_contract)

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.