GetClient initializes a connection to the Ethereum Network.

UpdateRegistry will update a specific registry with some new identities.

WatchTransaction will take a specific transaction model and watch for the blockchain updatesto get some information about this transaction (still pending, success, failed, error).

TxSubsOptions is the structure containing the options used while listening fora transaction completion.- Timeout is the maximum time during which the process will try to get an answer- Delay is the amount of time the process will sleep before trying to get another answer (in the same try)- MaxRetries is the maximum amount of retry we authorize to get a valid completion answer from the blockchain.