HD Wallets: Keys to the Kingdom
This week, I switch focus from the network to the human. Consensus, performance, and security matter, but none of it helps if people cannot safely manage their keys. Private key…
Security Hardening: Protecting the Network
These past two weeks, my mindset shifts slightly. Up to now, the focus has been correctness, performance, and behavior under normal conditions. This phase is about assuming things will go…
Testing and Validation: Ensuring Reliability
These past two weeks, I stop trusting myself. That sounds dramatic, but it is exactly the right mindset at this stage. A blockchain implementation cannot be mostly correct. It must…
Performance Optimization: Speed Matters
These past two weeks, ZooBC stops being about correctness and starts being about reality. Getting things right is only the first step. Once the system behaves correctly, the next question…
Network Monitor: Eyes on the Chain
This week, I stop flying blind, or with a foggy view only thanks trough the glasses of SQL queries. A blockchain without visibility is a black box, and black boxes…
Proof of Participation: Consensus Refined
These past two weeks, I spend most of my time on the part of ZooBC that matters more than anything else. Consensus. Everything else can be rewritten, optimized, or replaced.…
Block Structure: Building the Chain
Block Structure: Building the Chain These past two weeks, ZooBC finally starts doing the thing a blockchain is supposed to do. Blocks are being produced.They are validated.They are added to…
P2P Networking: Connecting the Nodes
P2P Networking: Connecting the Nodes These past two weeks, ZooBC finally starts reaching outside of itself. Until now, everything has been internal. Cryptography, transactions, state, all moving cleanly inside a…
Database Schema: Getting State Right
These past two weeks, I spend most of my time thinking about something that rarely gets love in blockchain discussions: state. Not consensus.Not networking.Not cryptography. State. If the database layer…
Transactions: The Heart of the Blockchain
These past two weeks, ZooBC finally starts to feel alive. Transactions are flowing now. Not through a peer-to-peer network yet, not across nodes scattered around the world, but internally, through…