Docs

Sherwood Fi is the first platform to tokenize U.S. county tax lien and tax deed markets — bringing institutional-grade, real-estate-backed yield (8–16% target net) to retail investors with 24/7 secondary liquidity and USDC settlement on Robinhood Chain.

Tax liens and tax deeds are among the oldest defensive yield assets in the United States. Historically reserved for large institutions at in-person county auctions, Sherwood Fi tokenizes them so any wallet holder can access them onchain.

• Fixed statutory interest rate embedded in each token
• Defined redemption window enforced by smart contract
• Underlying parcel reference (APN / assessor ID)
• Senior first-position claim on real property
• 24/7 secondary market with instant USDC settlement

Core value proposition: bring a traditional high-yield, real-estate-backed asset class to blockchain with real liquidity and retail accessibility — enforced entirely by code.

Testnet metrics (illustrative): TVL ~$18.4M, secondary volume ~$6.2M, 4,218+ active certificates. Figures update in real time during early access.

Sherwood Fi requires an EVM-compatible wallet on Robinhood Chain. Supported wallets include MetaMask, Rabby, Phantom, Coinbase Wallet, and Robinhood Wallet.

1. Install a browser wallet or Robinhood Wallet (iOS/Android — native Robinhood Chain support).
2. Navigate to sherwoodfi.site and click Connect Wallet.
3. Approve the connection request.
4. If on an unsupported network, switch to Robinhood Chain (see RPC configuration).

Frontend stack: Wagmi + Viem for wallet connection, transaction signing, and chain switching.

Robinhood Chain is an EVM-compatible Layer 2 built on the Arbitrum stack, optimized for tokenized real-world assets with low fees and fast settlement.

import { defineChain } from "viem";

export const robinhoodChain = defineChain({
  id: 4663,
  name: "Robinhood Chain",
  nativeCurrency: { name: "Ether", symbol: "ETH", decimals: 18 },
  rpcUrls: {
    default: { http: ["https://rpc.mainnet.chain.robinhood.com"] },
  },
  blockExplorers: {
    default: {
      name: "Blockscout",
      url: "https://robinhoodchain.blockscout.com",
    },
  },
});

All Sherwood Fi markets settle in USDC. Bridge USDC to Robinhood Chain before purchasing tokenized certificates.

1. Acquire USDC on Ethereum mainnet or a supported source chain.
2. Bridge via LayerZero or the native Robinhood Chain bridge.
3. Confirm USDC balance on Robinhood Chain (chain ID 4663).
4. Retain a small ETH balance for gas fees.
5. Approve USDC spend when purchasing certificates (standard ERC-20 approval flow).

A one-time eligibility verification is required before trading. This can be executed onchain via the EligibilityGate contract or through a lightweight offchain KYC flow, depending on jurisdiction.

1. Connect wallet on Robinhood Chain.
2. Complete one-time KYC / eligibility check.
3. Wait for early-access cohort approval (phased rollout).
4. Approved wallets unlock primary issuance and secondary market access.

1. Connect wallet on Robinhood Chain + complete one-time eligibility check.
2. Browse markets — filter by state, yield, term, and collateral coverage.
3. Approve USDC and purchase a tokenized certificate. Position appears in portfolio instantly.
4. Hold for statutory yield at redemption, or list on the secondary market at any time.

Portfolio data, accrued interest, and market positions update in real time via onchain events and indexer queries.

Sherwood Fi tokenizes two distinct instruments. Each is represented as an ERC-721 certificate with immutable statutory terms.

Current testnet / early-access markets. Statutory rates are set by jurisdiction — not by Sherwood Fi.

Target net yield across markets: 8–16%. Settlement currency: USDC. Marketplace uptime: 24/7.

Yield is generated through statutory interest paid when the property owner redeems the lien. Terms are fixed at mint and enforced by the RedemptionHandler contract — no discretionary payouts.

• Redemption window encoded in token metadata at issuance.
• Interest accrues from certificate purchase date.
• Owner redemption triggers automatic USDC distribution to the holder.
• Token is burned on settlement. Lien cleared onchain.
• Alternative exit: sell on secondary market before redemption at any time.

Collateral coverage measures how many times the underlying property value exceeds the lien face amount. Parcel references are embedded in each token and verifiable onchain.

Property status and valuation data may be verified via the CollateralVerifier contract and external oracles (Chainlink or Robinhood-native feeds) where jurisdiction requires it.

Sherwood Fi is a full-stack onchain RWA protocol. Certificates are minted on Robinhood Chain, traded on an onchain marketplace, and settled in USDC.

User → Wallet (Wagmi/Viem)
     → EligibilityGate (one-time)
     → Marketplace (USDC → CertificateFactory mint)
     → ERC-721 Lien Certificate (portfolio)
     → RedemptionHandler (yield) OR Marketplace (secondary exit)

Core protocol contracts. All deployments require dual audit from recognized firms before mainnet launch. Emergency pause functionality included.

Each lien certificate is an ERC-721 token. Metadata is immutable after mint. The token is the legal-economic claim representation onchain.

{
  "market": "maricopa-az",
  "type": "Tax Lien",
  "statutoryRate": "16.0%",
  "maxTerm": "36mo",
  "parcelRef": "APN-304-12-045B",
  "county": "Maricopa",
  "state": "AZ",
  "faceValue": "1250.00",
  "collateralCoverage": "22x",
  "seniorClaim": true,
  "currency": "USDC",
  "issuedAt": "2026-03-15T00:00:00Z"
}

• Transferable on secondary market.
• Burned on redemption settlement.
• All payments and ownership changes verifiable onchain.

Indexer events drive real-time portfolio updates in the frontend. No offchain database required for position state — the chain is the source of truth.

The Marketplace contract supports a hybrid orderbook / AMM model for 24/7 certificate trading with atomic USDC + NFT settlement.

1. List certificate at ask price in USDC from Portfolio.
2. Buyer submits bid or accepts ask — matched onchain.
3. Atomic swap: USDC to seller, NFT to buyer in a single transaction.
4. No redemption required. Exit anytime during certificate term.

Revenue model: origination fees + secondary trading fees. $SHER stakers receive revenue share and fee discounts (see Tokenomics). Gas paid separately in ETH.

$SHER is the utility and governance token of Sherwood Fi. It aligns long-term participants with protocol growth and fee revenue.

• Priority early-access allocation for new county markets
• Governance votes on new market listings and protocol parameters
• Staking for fee discounts on primary and secondary trades
• Revenue share from marketplace origination and trading fees
• Increased position limits for staked holders

Protocol revenue is generated from marketplace activity, not from investor yield. Statutory interest flows entirely to certificate holders.

• Origination fees on primary certificate purchases.
• Trading fees on secondary market transactions.
• Portion of fees distributed to $SHER stakers via GovernanceStaking contract.
• Remaining fees fund protocol development and audit reserves.

Security is non-negotiable for an RWA protocol handling real-property claims. Sherwood Fi follows a defense-in-depth approach.

• Minimum two independent audits from recognized firms before mainnet.
• Pausable contracts with multisig-controlled emergency stop.
• Onchain transparency as the primary trust mechanism — all certificates, payments, and redemptions verifiable.
• SPV / wrapped offchain structures under evaluation for legal enforceability of underlying liens.
• Jurisdiction-aware eligibility gating for regulatory compliance.

Documentation deliverables planned: Litepaper, full Tokenomics paper, audited contract reference, and pitch deck. This docs portal is the living technical reference.