# contract: Common

Documentation:
```
@title Common functions
@author Ocean Protocol Team
```

## Functions

### external getCurrentBlockNumber

Documentation:

```
@notice getCurrentBlockNumber get block number
@return the current block number
```

### public isContract

Documentation:

```
@dev isContract detect whether the address is 
         is a contract address or externally owned account
@return true if it is a contract address
```
Parameters:
* address addr