Weekly Update – Strengthening Compliance & Security Foundations on Casper Frontend • Validated full ICO page functionality with thorough end-to-end testing • Researched CSPR.click integration for smooth user authentication (social login + self-custodial experience) • Analyzed potential partnership platforms to expand our ecosystem Contracts • Continued integration of ERC-7943 into the NFT contract for robust RWA compliance • Added advanced security & regulatory features: – Whitelisting for minting and transfers (enables verified/KYC users) – Asset freezing to restrict transfers during legal disputes – Forced transfers by authorized admins (supports seizures, wallet recovery, and regulatory compliance) – Wrapped transfer logic to automatically enforce whitelisting and freeze checks – Switched to the Access Controls module for clear separation of duties (e.g., dedicated roles for freezing, whitelisting, minting/burning) We’re also actively coordinating with Halborn on our upcoming security audit. To maximize effectiveness and cost efficiency, we’ve decided to bundle in three additional contracts the marketing contracts for real estate buying/selling and two metadata contracts ported from EVM — before the review. This avoids duplicate work and ensures everything is audited together. As a result, we’re adjusting our timeline and expect the ICO to move forward in approximately three weeks once these integrations and the audit scope are fully aligned. In the meantime, testnet activity continues smoothly. Want to experiment with transactions? Grab test CSPR here: testnet.cspr.live/tools/fauc… Quick note: The recent Vercel incident had no impact on us — our code isn’t hosted there, and we’re only using test keys. Everything remains normal on our end. These deliberate steps are making BIG Token one of the most compliance-ready and audit-conscious projects building real-world asset tokenization on Casper. Quality over speed. How do you feel about projects that take the extra time for proper security and compliance? Worth it, or would you prefer faster launches? Let us know your thoughts 👇 #BIGToken #CasperNetwork #RWA #LeaseFi #SmartContractAudit #Halborn

🚀 BIG Token Weekly Update Frontend: - Major ICO page UI improvements + new components for unlocked tokens (claiming & unbonding) - Updated main dashboard routing - Started migration of auth & registration to wallet-based flow Backend: - Continued building the blockchain indexer service - Hardened vesting & staking features with new API endpoints - Corrected reward calculations & aligned schemas with latest contract changes - Improved data consistency and idempotency - Expanded integration test coverage for staking, vesting & auth flows Contracts: - Tested contract upgrading on Casper network - Preparing deployment of new contracts: Escrow, Lease, NFT, Roles - Improved event emission for accurate reward data on frontend - Fixed & strengthened all tests to ensure full functionality is preserved Steady progress across the stack. The foundation is getting stronger every week. More updates soon 👀 #BIGToken #CasperNetwork #Web3

🚀 KeyChain Pulse: Building transparent RWA on @Casper_Network. No major drops today, but let's recap wins and gather your input for the road ahead. Infrastructure first. 1/4 #BIG #CasperNetwork #RWA

Quick dev note: Picking up the pace on coding—expecting ICO staking, vesting, and token contracts wrapped in 2-3 weeks. Solid momentum toward utility launch. Infrastructure first. Think #BIG #CasperNetwork

Frontend: New logo added to ICO page header, whitepaper link now in footer for easy access. Testnet purchases still live—try the flow: leasefi.vercel.app/ico Precision over hype. 2/3

Dev update: ICO page refreshed & live on testnet! Purchases enabled (USDT/USDC/CSPR via wallet). Head over: leasefi.vercel.app/ico Wallet connect fixed, GitHub tab added, rewards & tokenomics sections aligned to latest whitepaper, footer now links our social handles. Testnet mode for safe testing. Infrastructure first. Think #BIG #CasperNetwork 1/3

🚀 BIG Project Update — Building the Right Way We’ve been heads-down refining BIG, and we wanted to share a meaningful update with our community. After extensive evaluation, we made the decision to move away from a traditional Private Sale → Public ICO model. Due to the current state of DEX infrastructure on the Casper network, we chose not to rush liquidity into an environment that doesn’t yet meet our long-term standards. What changed — and why it matters: • One Private Sale only • Liquidity will be added later via a DEX/CEX when the ecosystem is ready • Tokens previously reserved for a public ICO have been reallocated to staking rewards To reward early conviction, private sale participants will now benefit from enhanced staking incentives, with 6% of the staking pool released annually — creating consistent, sustainable rewards for long-term holders. Our whitepaper continues to evolve as we identify efficiencies and modernize the protocol. Every update is focused on longevity, utility, and responsible growth. Lastly, development is moving fast — the private sale website is nearing completion, and we’re excited to share more very soon. We’re not here to rush. We’re here to build something that lasts. Think #BIG.

Development Update We wrapped another internal review on the BIG web platform. • UI/UX layouts and design systems are complete • Dashboard structures and navigation finalized • Front-end and back-end teams are now executing on code This is the phase where everything starts becoming real. #CryptoDevelopment #Web3Builders #BIG

Development update: LeaseFi has been submitted to the @Casper_Network Hackathon 2026 (qualification round) and is currently under review. This is part of our process of building, testing, and validating the platform within the Casper ecosystem. We’ll share updates as the review progresses.

Building something real takes time. BIG is being developed step by step — starting with clear problems, then careful design, then execution. We’re not rushing announcements. We’re focused on getting it right. Updates will come as progress is made.

Progress update: We’ve completed 6 of the initial smart contracts and are now actively looking for independent auditors to review them. Security and correctness matter more than speed. We’ll share updates as we move forward.