Update Bybit's $1.4 Billion ETH Hack card to explain format and add n…

…ew Pi Network card with comprehensive details and references

cards/ByBit's $1.4 Billon ETH Hack.md

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 # Bybit's $1.4 Billion ETH Hack
 

cards/Pi Network.md

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+#show-card 
+
+## Introduction
+
+[Pi Network](https://minepi.com/blog/) is a digital currency project aimed at making cryptocurrency mining accessible to everyday users through mobile phones. Founded in 2018 by Stanford graduates, the project seeks to distribute cryptocurrency fairly and build a decentralized marketplace and ecosystem for its users.
+
+## Service Provided
+
+Pi Network provides a mobile-first cryptocurrency mining experience that consumes minimal battery power and processing resources. Unlike traditional cryptocurrencies that require significant computing power to mine, Pi can be mined through a mobile app by tapping a button once every 24 hours. This approach makes cryptocurrency accessible to the general public without specialized equipment or technical knowledge.
+
+## Technical Details
+
+The Pi Network operates on a consensus algorithm called the Stellar Consensus Protocol (SCP), which is more energy-efficient than traditional Proof of Work systems. Pi uses a security circle concept where users build trust networks that contribute to the overall security of the blockchain.
+## Team
+
+The Pi Network was founded by a team of Stanford graduates:
+- Dr. Nicolas Kokkalis - Head of Technology
+- Dr. Chengdiao Fan - Head of Product
+- Vincent McPhillip - Head of Community
+
+## Roadmap
+
+Pi Network follows a three-phase development roadmap:
+
+- Phase 1 (Beta): Launched in March 2019, allowing users to mine Pi on mobile devices
+- Phase 2 (Testnet): Launched in March 2020, testing the Pi blockchain
+- Phase 3 (Mainnet): Transition to a fully decentralized blockchain with KYC verification requirements and open ecosystem development
+
+## Latest Updates
+
+- 2022 Q4: Mainnet launched in closed network mode with KYC verification requirements
+- 2022 Q2: Introduction of Pi Wallet and enhanced KYC verification system
+- 2021 Q4: Preparation for Mainnet launch with mass verification system
+- 2021 Q3: Expanded ecosystem applications and developer tools
+- 2021 Q1: Launched Pi Brainstorm community ideation platform
+- 2020 Q1: Testnet launched, allowing initial blockchain operations
+- 2019 Q1: Beta version launched, allowing mobile mining
+
+## References
+
+- [Pi Network Official Blog](https://minepi.com/blog/)
+- [The Pi Network & Pi Token (YouTube)](https://youtu.be/wHjuX20y82c?si=VBD0PFi8H2JuFhj0)
+- [Pi Network Official Website](https://minepi.com)
+