Backfill in Progress on Base Mainnet

Every Rental Unit.
One NFT. Audited Cash Flows.

Lobie Units is an on-chain registry where each short-term rental unit is one ERC-721 NFT that publishes its audited monthly financial series. Gordon Growth NPV computed on-chain. Harris & Trotter attested. No PII. Ever.

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Rental Units
509
Monthly Observations
18,664
Buildings
17
Data Range
Jan 2023 — Mar 2026
How it works
From SQL to on-chain in 4 steps
The protocol does ONE thing: publish audited per-unit cash flows. Every economic layer is built on top.
Step 01
SQL
Source Data
Lobie's property management system records monthly revenue, expenses, and owner payouts for each unit in a GCP SQL database.
Step 02
NFT
Mint Unit
Each unit gets one ERC-721 NFT with a deterministic tokenId derived from building + unit code. No PII on-chain (LGPD compliant).
Step 03
R$
Post Observations
Monthly financial data posted on-chain: gross revenue, 11 expense categories, net result, owner payout. Each observation has a canonical row hash.
Step 04
HT
Auditor Attests
Harris & Trotter reconciles on-chain data against bank movements, then attaches an EAS attestation UID to each verified observation.
Architecture
From property to DeFi primitive
The data pipeline that turns private SQL into composable on-chain valuations.
DATA SOURCES Lobie PMS GCP MySQL Bank Statements PIX reconciliation Harris & Trotter Auditor (ATTESTER) INDEXER (RAILWAY) Indexer Service Read SQL → Compute Hash → Post On-Chain RECORDER_ROLE | Static IP 162.220.234.15 mintUnit() postObservation() BASE MAINNET (CHAIN 8453) LobieUnitRegistry ERC-721 | 509 NFTs | 18,664 Observations | Merkle Root npvOf(tokenId, r, g) → Gordon Growth NPV attestObservation() EAS Attestation 0x4200...0021 CONSUMERS (PERMISSIONLESS) Morpho Blue BRLE Vault Index Token AI Agents Dune / APIs
On-Chain Data
Full expense decomposition per unit
Every monthly observation contains 11 expense categories plus revenue and payout — the same granularity as the internal accounting system.
R$
Revenue & Payout
grossRevenue (valor_bruto_reservas), netResult (resultado_liquido), and ownerPayout (repasse_unidade) — the valuation-relevant line.
11
Expense Categories
OTA fees, taxes, cleaning, Lobie fee, condominio, energia, IPTU, manutencao, enxoval, and other expenses — all on-chain.
NPV
Gordon Growth Valuation
npvOf(tokenId, r, g) computes on-chain NPV using trailing 12-month average payout. Default: r=6%, g=3%. Any protocol can call it.
#
Canonical Row Hash
Each observation includes keccak256 of the canonical row (excluding PII). Auditors verify the hash matches source data — full audit trail.
EAS
Auditor Attestation
Harris & Trotter attaches EAS attestation UIDs after bank reconciliation. Corrections reset the attestation — HT must re-attest.
0
Zero PII On-Chain
No names, emails, CPFs, or personal data ever touch the blockchain. LGPD compliant by design. Only financial data and hashes.
Live Portfolio Data
R$ 28M+ in total owner payouts since Jan 2023
All data sourced from on-chain observations. Updated monthly after each repasse cycle.
Monthly Portfolio Payout (R$)
Revenue by Building (R$)
Top 10 Units by Avg Payout
Data from 509 units across 17 buildings. Jan 2023 — Mar 2026. Source: LobieUnitRegistry on Base (0xd8C3...4638). March 2026 shows negative due to pending reconciliation adjustments.
Smart Contract
Verified on Basescan
Single immutable contract. ERC-721 + AccessControl. Solidity 0.8.27, OpenZeppelin v5.4.0, Cancun EVM target.
Base Base Mainnet Chain 8453
LobieUnitRegistry 0xd8C3...4638
Standard ERC-721 (Lobie Units / LOBIE)
Valuation npvOf(tokenId, r, g) — Gordon Growth
EAS (Base) 0x4200...0021
Compliance & Audit
Institutional-grade data pipeline
Every observation is reconcilable to source accounting data. Auditor-attested. Correction history preserved.
Issuer
EFIX Plataforma de Tokenização e Crowdfunding Ltda
Regulation
CVM Act 23.635/2025
Auditor
Harris & Trotter
Attestation
EAS on Base
Privacy
LGPD — Zero PII on-chain
Data Source
repasse_v2_unidades
Composability
Built to be composed on
The registry publishes data. Everything else is built on top by other protocols.
Morpho
NPV-Priced Collateral
Wrap unit NFT, use npvOf() as price feed. Borrow against audited rental cash flows on Morpho Blue.
BRLE
BRLE + Lobie Yield
Combine DI fixed income (BRLE ~14.4% APY) with real rental yield (Lobie units). Two yield sources, one platform.
Index
Lobie Index Token
Fungible token tracking volume-weighted NPV of the unit basket. Passive exposure to the entire Lobie portfolio.
AI
Agent-Queryable
AI agents can call npvOf(), observationsOf(), and units() to evaluate rental assets programmatically. Standard ERC-721 interface.

Audited cash flows. On-chain. Composable.

509 rental units across 17 buildings in Rio de Janeiro. Every month, every expense category, every payout — verified and immutable.

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