B3Note

## Overview

B3Note is a decentralized platform built on the Internet Computer that allows you to create and share notes. With strong encryption and blockchain-based verification, B3Note emphasizes privacy and security. The platform offers two distinct features: anonymous note sharing and authenticated note sharing.

## Key Features

– **Anonymous Usage**: B3Note can be used anonymously, with no login required.

– **Limited Notes for Anonymous Users**: Create up to 5 notes, each with a 1-hour timeout. After this period, the notes are automatically deleted. Additionally, any generated share link will also expire after 1 hour.

– **Canister Global Timer**: A global timer is employed to clean up expired users and one-time keys, thereby enhancing system efficiency and security.

– **Secure Sharing with On-Chain Verification**: Notes can be securely shared through a simple link that carries the signature of your public key. This signature is verifiable on-chain and pairs with the note’s unique ID to confirm access to the decryption key for that note.

– **Auto Deletion**: Notes are automatically deleted either after they have been read for the first time or if they remain unread for an hour.

– **Advanced Encryption**: B3Note uses a form of witness-like encryption to ensure that only authorized users with the correct credentials can access the notes.

– **Timelock Encryption**: Encrypted decryption keys, notes, and shared links come with a built-in expiry feature, aligning with the concept of Timelock Encryption for temporary secure access.