What Does Byron Phase Mean?
The Byron Phase is the first development stage in Cardano’s roadmap. Released in September 2017, it introduces developments like Ouroboros, side chains, voting delegation, and the Daedalus wallet.
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The Byron Phase is named after the famous poet “Lord Byron.”
During this phase, Cardano’s developers created a solid foundation for the blockchain, ensuring they can create more advanced features in the next phases.

New Features Introduced During Byron
During the Byron stage, Cardano developers introduced four main features that later became the cornerstones of the ecosystem. Let’s review each of them:
Side Chains
One of Cardano’s biggest developments was the introduction of side chains (independent chains connected to the main blockchain). With this evolution, third parties could officially start using Cardano as a consensus and settlement layer for new L2 blockchains.
Ouroboros
Ouroboros is a proof-of-stake (PoS) algorithm first used by Cardano during the Byron phase. It confirms transactions and creates new blocks through validators.
Ouroboros relies on a unique approach called “provably secure PoS,” which involves a rigorous mathematical framework that ensures provable security against attackers.
In comparison to Ethereum, Cardano has no slashing, practically no minimum stake, and is easily accessible to everyone. Ouroboros enables all these features.
Delegation and Voting
As Cardano is a decentralized network, many decisions are made after holding a vote within the community of ADA stakeholders.
The concept of delegation and voting enables stakeholders (users who have staked ADA) to “delegate” someone to vote on their behalf.
In this way, stakeholders could delegate their voting power to a pool operator who will submit the votes for more people at once.
Daedalus Wallet

The Cardano-native open-source wallet Daedalus was developed during the Byron phase. The wallet has since become the official wallet for storing and managing ADA, the blockchain’s native cryptocurrency.
What sets Daedalus apart is that it operates as a full node, meaning it downloads and validates the entire Cardano blockchain.
This made the network more secure and decentralized but required a lot more computational power and storage space.
Conclusion
To sum everything up, Byron was a crucial phase in Cardano’s history, setting the fundamentals for its future development.
Without the Proof of Stake consensus mechanism or the appearance of side chains, Cardano wouldn’t be the blockchain powerhouse it is today.