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 22192616.

You can also simulate arbitrary calls.

Top active contracts

Aggregate measures over the last 10000 blocks.

By gas usage

11770308347
0xdac1…1ec7 (Bitfinex, Token Contract, Tether USD (USDT), TetherToken, https://tether.to/, Stablecoin)
10046808962
0x66a9…a8af (UniversalRouter)
9743703259
0xa0b8…eb48 (FiatTokenProxy, Token Contract, USD Coin (USDC), Stablecoin, https://www.centre.io/)
8738233969
0x5141…a190
7856722139
0x4350…02dd (FiatTokenV2_2)
7709554222
0xc02a…6cc2 (WETH9, https://weth.io/, Token Contract, WrappedEther, 0x Ecosystem, Wrapped Ether (WETH), Stablecoin)
4486851476
0x0000…2734 (AllowanceHolder)
4190884254
0x0d0e…428f (MainnetSettler)
4045059836
0x1111…2a65 (AggregationRouterV6)
3638216643
0xe2c5…1e3e (TrustedMulticallForwarder)
3516918842
0x0645…6fb8 (XENCrypto)
3465329213
0x3acf…b2f5 (Proxy)
3450258056
0x2f6c…2bab (LegacyMarket)
3371994067
0x1111…0582 (AggregationRouterV5)
3254899178
0x7a25…488d (UniswapV2Router02, Router 2)
3233867071
0x0000…8a90 (PoolManager)
2918603623
0x881d…300c (MetaMask, MetaSwap, Swap Router)
2572198735
0x1231…4eae (LiFiDiamond)
2416414721
0xffff…5847 (Proxy)
2391992603
0x50d8…5cb8 (CoreRouter)

By calls received

1052725
0xc02a…6cc2 (WETH9, https://weth.io/, Token Contract, WrappedEther, 0x Ecosystem, Wrapped Ether (WETH), Stablecoin)
618051
0xdac1…1ec7 (Bitfinex, Token Contract, Tether USD (USDT), TetherToken, https://tether.to/, Stablecoin)
595490
0x4350…02dd (FiatTokenV2_2)
592226
0xa0b8…eb48 (FiatTokenProxy, Token Contract, USD Coin (USDC), Stablecoin, https://www.centre.io/)
234171
0x2715…4f41
142630
0x5b1b…81dd (TokenState)
139661
0x0000…8a90 (PoolManager)
117957
0x4caf…a6f3
98172
0xbbbb…ffcb (Morpho)
96741
0x66a9…a8af (UniversalRouter)

By calls emitted

594478
0xa0b8…eb48 (FiatTokenProxy, Token Contract, USD Coin (USDC), Stablecoin, https://www.centre.io/)
480748
0x66a9…a8af (UniversalRouter)
258629
0xc5f0…3504 (Synthetix)
197923
0xe65c…df3d
191846
0x1036…41dc
166138
0x5141…a190
163801
0x0d0e…428f (MainnetSettler)
145518
0xca59…90bf
142264
0x1f63…0e18
127278
0xf9cf…e5fa

By balance

59603921 eth
0x0000…05fa (DepositContract)
2860927 eth
0xc02a…6cc2 (WETH9, https://weth.io/, Token Contract, WrappedEther, 0x Ecosystem, Wrapped Ether (WETH), Stablecoin)
1706463 eth
0x4904…e97e (Proxy)
1110925 eth
0x8315…ed3a
484033 eth
0xbeb5…06ed (Proxy)
162834 eth
0x8484…2b30 (Ether Predicate Proxy, Matic Network, EtherPredicateProxy, Polygon (Matic), Ether Bridge)
125599 eth
0xa160…f291 (Tornado.cash, TornadoCash_eth, 100 ETH)
122761 eth
0xbed1…11f6 (TransparentUpgradeableProxy)
120600 eth
0xd19d…876f
108393 eth
0xdf9e…3d7f (ActivePool)

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.