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Milestone for Cardano: First block created on the Shelley Blockchain


  • The internal Cardano Shelley beta test network started on April 25th with the creation of the Genesis block.
  • The test network is one of the last steps before the hybrid phase for the transition of the Shelley Mainnet is officially started.

Cardano has come a big step closer to the launch of the Shelley Mainnet. Charles Hoskinson, the inventor of Cardano and CEO of Input Output Hong Kong (IOHK), wrote in a tweet published yesterday that „a wizard has arrived in the land of Cardano exactly when he was supposed to“ and shared a screenshot with Duncan Coutts, Cardano’s head of technical operations.

This shows that Cardano has already mined the first Shelley block on April 25th at 23:27:38 UTC. As Coutts writes, the process worked the first time he ran the command line installation.

In response to a Twitter user’s request, Hoskinson made it clear that the block is not yet the first block in the hybrid phase of the transition to Shelley, but only an internal test network:

Not quite. Friends and family infrastructure are slowly coming online. But we are approaching the hybrid phase.

Launch of the Shelley Mainnet step by step

As recently reported, the launch of Cardano Shelley Mainnet will take place in several phases. In the first stage there will be an internal test phase, which, as has now been announced, started last Saturday 25 April. This will be followed by a „hybrid phase“ which will allow users to make the transition from the current Byron phase to Shelley.

As Shelley introduces a new address type, BECH32, all users will need to migrate to the new Shelley wallet. After the hybrid phase there will be a hard fork, so the protocol will no longer care about Byron and will work solely according to the Shelley rules. From this point on it will also be possible to redeem ITN rewards, participate in staking and delegation.

Until now, ADA holders have only been able to stake and delegate their ADA and receive rewards within the Shelley Incentivized Testnet (ITN). For the launch of the Shelley ITN, a snapshot was taken which limited the number of possible participants because no new users were allowed. This will change with the Shelley Mainnet.

A big step towards the launch of the Shelley Mainnet was recently taken with the launch of the first version (V1.0.0) of the Cardano Daedalus Wallet. The wallet is also developed by IOHK and offers all the functionality needed for staking and delegating ADA.