Inspiration

The rapid growth of DeFi highlighted a major gap — real-world assets (RWAs) like real estate, invoices, and cash-flow assets remain largely disconnected from on-chain ecosystems. Existing solutions rely heavily on centralized verification, opaque valuation, and fragmented compliance systems.

We were inspired to build a trustless, programmable, and verifiable RWA infrastructure that brings real-world value fully on-chain while inheriting Ethereum-level security.

What it does

Prop99 is a rollup-native RWA protocol built on Mantle L2 that enables:

Trustless verification of real-world assets using multi-AI oracle consensus
Transparent and auditable asset valuation
Tokenization of RWAs into on-chain assets
Seamless integration into DeFi and RealFi ecosystems
Ethereum-secured verification via rollup anchoring

It transforms physical assets into verifiable, composable digital assets.

How we built it

We designed a modular, rollup-native architecture.

Core Components

OracleRouter → Accepts asset submission and verification requests
AI Oracle Network (off-chain) → Performs document analysis, satellite verification, and market evaluation
ConsensusEngine → Aggregates oracle responses with quorum + confidence scoring
VerificationAnchor → Anchors final results to Ethereum via Mantle L2 → L1 messaging
AssetRegistry → Stores verified asset metadata and state
RWATokenFactory → Deploys asset-specific tokens
ComplianceModule → Handles regulated transfers and lifecycle control

Key Technologies

Mantle L2 (rollup execution layer)
Ethereum (security anchoring)
IPFS (document storage via hashes)
AI-based oracle validation
Smart contracts (Solidity, modular factory pattern)

Flow

User submits asset data + document hashes
AI oracles independently verify and evaluate
Consensus engine aggregates results
Verification anchored to Ethereum
Token minted representing the asset
Asset becomes DeFi-compatible

Challenges we ran into

Trust minimization in AI oracles

Ensuring no single oracle could manipulate valuations required designing a robust consensus mechanism.

Off-chain to on-chain coordination

Synchronizing AI computations with on-chain validation and ensuring deterministic results.

Rollup security guarantees

Making sure Mantle L2 verification meaningfully inherits Ethereum security.

Data integrity & authenticity

Handling real-world documents securely using IPFS while maintaining auditability.

Compliance integration

Designing protocol-native compliance without introducing centralization.

Accomplishments that we're proud of

Built a complete end-to-end RWA pipeline (submission → verification → tokenization)
Designed a multi-oracle AI consensus system for trustless validation
Successfully integrated Mantle L2 with Ethereum anchoring
Implemented factory-based tokenization architecture for scalability
Created a fully working prototype + frontend demo during the hackathon
Delivered a production-level architecture, not just a concept

What we learned

Real-world asset tokenization is not just a smart contract problem — it’s a data verification problem
AI can act as an oracle layer, but consensus is critical to remove trust
Rollups can enable scalable systems, but security anchoring must be explicit
Designing for compliance early is essential for real-world adoption
Building modular architectures makes systems easier to scale and extend