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 11960881.

You can also simulate arbitrary calls.

Top active contracts

Aggregate measures over the last 10000 blocks.

By gas usage

18507977486
0x7a25…488d (UniswapV2Router02, Router 2)
6858669238
0xdac1…1ec7 (TetherToken, https://tether.to/, Token Contract, Stablecoin, Tether USD (USDT))
6468310112
0xc02a…6cc2 (WETH9, https://weth.io/, WrappedEther, Token Contract, Wrapped Ether (WETH), Stablecoin, 0x Ecosystem)
6426281184
0xe069…0c71 (Router, Dex, 1inch.exchange)
3396497618
0x1111…f3ae (1inch.exchange v2, OneInchExchange, Dex)
2712959478
0xa0b8…eb48 (USD Coin (USDC), FiatTokenProxy, https://www.centre.io/, Token Contract, Stablecoin)
2325218257
0xb727…78a2 (FiatTokenV2)
1719970071
0xd9e1…8b9f (SushiSwap, UniswapV2Router02)
1546357902
0x2216…4946
1420070538
0xaeb9…56b2
1368377991
0xdef1…5eff (ZeroEx)
1248036221
0x881d…300c (Swap Router, MetaMask)
1168795755
0x0000…9f56
1117631335
0x2a54…5533 (BlockFi 3)
1115103877
0x629a…6205 (SorareTokens)
1104779202
0x7fc6…dae9 (DeFi, AAVE Token, InitializableAdminUpgradeabilityProxy, Aave Token (AAVE), Loans)
1091914456
0x3472…e53d
1075268233
0xc13e…ece8 (AaveTokenV2)
1032488910
0x7d27…c7a9 (InitializableImmutableAdminUpgradeabilityProxy)
1030700240
0x74de…6631

By calls received

618997
0xc02a…6cc2 (WETH9, https://weth.io/, WrappedEther, Token Contract, Wrapped Ether (WETH), Stablecoin, 0x Ecosystem)
319683
0xdac1…1ec7 (TetherToken, https://tether.to/, Token Contract, Stablecoin, Tether USD (USDT))
168052
0x7a25…488d (UniswapV2Router02, Router 2)
139117
0xb727…78a2 (FiatTokenV2)
139092
0xa0b8…eb48 (USD Coin (USDC), FiatTokenProxy, https://www.centre.io/, Token Contract, Stablecoin)
84565
0xe069…0c71 (Router, Dex, 1inch.exchange)
71849
0x6b17…1d0f (DeFi, Maker, Token Contract, Dai Stablecoin (DAI))
34798
0x2216…4946
32785
0x8358…28fe
31283
0x3472…e53d

By calls emitted

590191
0x7a25…488d (UniswapV2Router02, Router 2)
157013
0xe069…0c71 (Router, Dex, 1inch.exchange)
139092
0xa0b8…eb48 (USD Coin (USDC), FiatTokenProxy, https://www.centre.io/, Token Contract, Stablecoin)
76256
0x0000…9f56
65206
0x7d27…c7a9 (InitializableImmutableAdminUpgradeabilityProxy)
55846
0xc02a…6cc2 (WETH9, https://weth.io/, WrappedEther, Token Contract, Wrapped Ether (WETH), Stablecoin, 0x Ecosystem)
50677
0xd9e1…8b9f (SushiSwap, UniswapV2Router02)
48003
0x9776…6b48 (Synthetix)
44575
0xdef1…5eff (ZeroEx)
37941
0x0d4a…1852

By balance

6313249 eth
0xc02a…6cc2 (WETH9, https://weth.io/, WrappedEther, Token Contract, Wrapped Ether (WETH), Stablecoin, 0x Ecosystem)
3337442 eth
0x0000…05fa (DepositContract)
1072704 eth
0x4ddc…0ed5 (DeFi, Token Contract, Compound Ether (cETH), CEther)
1009530 eth
0x07ee…3eca (Gemini, Contract 1, Exchange)
458340 eth
0xde0b…7bae (EthDev, Ethereum Foundation)
350458 eth
0x3dfd…76d3 (Lending Pool Core V1, Aave, LendingPoolLiquidationManager, Loans)
170087 eth
0x6a11…6cca (Mooniswap)
162113 eth
0xcafe…a5d8 (Pool)
159600 eth
0xa160…f291 (100 ETH, Tornado.cash, TornadoCash_eth)
131426 eth
0xa929…490c (Bridge)

About

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

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