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 21181132.

You can also simulate arbitrary calls.

Top active contracts

Aggregate measures over the last 10000 blocks.

By gas usage

18752190814
0x3fc9…7fad (UniversalRouter)
11572072156
0xc02a…6cc2 (WrappedEther, https://weth.io/, Stablecoin, Token Contract, Wrapped Ether (WETH), WETH9, 0x Ecosystem)
7433823203
0xdac1…1ec7 (https://tether.to/, Tether USD (USDT), Stablecoin, Token Contract, TetherToken, Bitfinex)
5925339864
0x3451…e812
5786830313
0x7a25…488d (Router 2, UniswapV2Router02)
4669936691
0x1111…0582 (AggregationRouterV5)
4557375911
0xa0b8…eb48 (USD Coin (USDC), Stablecoin, https://www.centre.io/, Token Contract, FiatTokenProxy)
4319974991
0x3328…9c49
4139880672
0x35fc…b34e
3642371925
0x4350…02dd (FiatTokenV2_2)
3223753940
0x0000…8ba3 (Permit2)
3203374893
0xdef1…5eff (ZeroEx, Zerox Exchange)
3193886058
0x881d…300c (Swap Router, MetaMask, MetaSwap)
3154612871
0x80a6…5d9e
3119272490
0xe957…8e29 (EthcoinProxy)
3052920769
0x46af…a8b5
2486410580
0x4ea9…a3b0 (Ethcoin)
2461284542
0x74de…6631 (Spender)
2377214739
0x44a6…92a2 (TransformERC20Feature)
2342443113
0x342f…9d75 (CumulativeMerkleDrop)

By calls received

1511762
0xc02a…6cc2 (WrappedEther, https://weth.io/, Stablecoin, Token Contract, Wrapped Ether (WETH), WETH9, 0x Ecosystem)
351167
0xdac1…1ec7 (https://tether.to/, Tether USD (USDT), Stablecoin, Token Contract, TetherToken, Bitfinex)
269408
0x4350…02dd (FiatTokenV2_2)
269127
0xa0b8…eb48 (USD Coin (USDC), Stablecoin, https://www.centre.io/, Token Contract, FiatTokenProxy)
157201
0x3fc9…7fad (UniversalRouter)
92311
0x3451…e812
85474
0x0000…8ba3 (Permit2)
78703
0x0a6e…5676
74480
0x7a25…488d (Router 2, UniswapV2Router02)
46984
0x22f9…8c18 (FlashWallet)

By calls emitted

893252
0x3fc9…7fad (UniversalRouter)
269765
0xa0b8…eb48 (USD Coin (USDC), Stablecoin, https://www.centre.io/, Token Contract, FiatTokenProxy)
230288
0x7a25…488d (Router 2, UniswapV2Router02)
207103
0x3328…9c49
171299
0x80a6…5d9e
165238
0x3451…e812
129849
0x1111…0582 (AggregationRouterV5)
124234
0x06a9…b19a (ERC1967Proxy)
123736
0xc02a…6cc2 (WrappedEther, https://weth.io/, Stablecoin, Token Contract, Wrapped Ether (WETH), WETH9, 0x Ecosystem)
103084
0xf3de…9127

By balance

53001562 eth
0x0000…05fa (DepositContract)
3064892 eth
0xc02a…6cc2 (WrappedEther, https://weth.io/, Stablecoin, Token Contract, Wrapped Ether (WETH), WETH9, 0x Ecosystem)
1204601 eth
0x8315…ed3a
779363 eth
0x4904…e97e (Proxy)
504736 eth
0xbeb5…06ed (Proxy)
270274 eth
0xde0b…7bae (Ethereum Foundation, EthDev)
229207 eth
0xafcd…c5da
152717 eth
0x8484…2b30 (Polygon (Matic), Ether Predicate Proxy, Matic Network, EtherPredicateProxy, Ether Bridge)
149187 eth
0x3088…f216 (UUPSProxy)
146900 eth
0xa160…f291 (TornadoCash_eth, 100 ETH, Tornado.cash)

About

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

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