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Midbench: Tokenized Lending Pools with Disintermediated Value Capture

White Paper v2.2 | February 2026


Executive Summary

Midbench deploys on-chain lending pools for consumer credit, starting with U.S. auto loan refinancing. By replacing traditional financial intermediaries with smart contracts, the platform eliminates ~1% in annual fees that typically sit between borrowers and investors. The target segment shifts with interest rates: prime borrowers in low-rate environments (where 1% savings = 25% interest reduction), subprime in high-rate environments.

Target Market: U.S. auto borrowers seeking to refinance existing loans. The optimal segment shifts with the rate environment:

Credit Tiers: The platform uses a 5-tier credit segmentation: Super Prime (780+), Prime (720-779), Near Prime (660-719), Subprime (580-659), Deep Subprime (<580). Minimum eligibility is FICO ≥ 620. See Credit Model Documentation for details.

The core arrangement: Midbench funds all origination costs (marketing, underwriting, compliance) from its own capital, charging zero fees to Pool investors. In exchange, Midbench seeds each Pool as the founding investor, capturing value when loan returns exceed investor required returns.

The instrument: Each Pool is a Perpetual ABS—a continuously managed, tokenized lending vehicle with no stated maturity. Unlike traditional ABS trusts that amortize and wind down, a Midbench Pool can originate new loans, raise additional capital, buy back tokens, and distribute dividends indefinitely—all administered by smart contracts at near-zero marginal cost. This is a new instrument class enabled by blockchain infrastructure (see §3.6).

Conservative by design: The ~1% margin estimate is anchored to observable intermediary costs—not optimistic projections about market capture. Traditional securitizers (banks, captive finance companies) currently operate profitably while paying these costs, demonstrating that additional value exists in the lending chain. By claiming only the disintermediation savings, Midbench's projections represent a defensible floor, not a ceiling.

Three stakeholder groups:

Borrower Highlights

Traditional auto loan payments traverse multiple intermediaries—payment processors, loan servicers, custodians—each extracting fees that get embedded in borrower rates. Midbench eliminates this chain. Each loan is deployed on Base with a dedicated payment address; borrowers pay in USDC directly to the loan contract.

Payments are flexible rather than fixed-schedule: borrowers pay any amount, at any time, provided cumulative payments remain above the minimum threshold. Interest accrues per-minute, so each payment immediately reduces the outstanding balance.

All loan state is on-chain and publicly verifiable in real time—balances, payment history, and terms are immutable and require no servicer reporting or reconciliation. A sample loan report illustrates this borrower-facing interface.


1. The Problem

When you make a car payment today, your money passes through a surprising number of hands—payment processors, loan servicers, banks—each one takes a cut. These costs get baked into your interest rate, and borrowers end up paying more than they should.

Traditional Flow:
Borrower → Payment Processor → Servicer → Bank → Lender
           ↓                  ↓          ↓
         (fees)            (fees)     (fees)

Each arrow represents fees extracted from borrower payments:

IntermediaryRoleTypical Cost
Payment ProcessorHandles payment routing, ACH/card processing0.1-0.3%
Loan ServicerCustomer service, payment tracking, collections0.25-0.50%
Custodian/TrusteeHolds collateral documentation, ensures compliance0.05-0.15%
Trust AdministratorManages payment waterfall, investor reporting0.10-0.20%

These costs compound, creating a persistent ~1% annual spread between what borrowers pay and what investors receive. On a 35,000autoloanat735,000 auto loan at 7% APR, this represents ~350/year that flows to intermediaries rather than reducing borrower costs or increasing investor returns.


2. The Midbench Solution

Midbench removes these intermediaries. Each loan is deployed on Base with a dedicated payment address. Borrowers pay in USDC, and payments flow directly to the loan contract.

Midbench Flow:
Borrower → Loan Contract → Pool → Investors
              (direct)

Every cent goes to principal reduction or investor returns.

Side-by-side comparison:

TraditionalMidbench
Payment path4+ intermediariesDirect to contract
Annual fees extracted~1% of principal$0
Payment methodACH/card (3-5 day settlement)USDC (instant settlement)
Payment scheduleFixed monthly auto-debitFlexible (pay anytime)
Balance visibilityMonthly statements, customer service callsReal-time on-chain
Payment verificationTrust servicer's accountingImmutable blockchain record

The ~1% annual savings comes from eliminating:

This ~1% becomes the Margin in loan pricing, creating the spread between Net Yield to Pool (RR) and investor required returns (rr). Instead of flowing to intermediaries, it flows to the Pool—captured by the founding investor (Midbench).


3. How It Works

3.1 Architecture

┌─────────────────────────────────────────────┐
│              MIDBENCH INC.                  │
│           (Delaware C-Corp)                 │
│                                             │
│  • Raises equity capital                    │
│  • Funds loan origination                   │
│  • Seeds each Pool as founding investor     │
└─────────────────────────────────────────────┘
                     │
                     ▼
┌─────────────────────────────────────────────┐
│           FACTORY CONTRACT                  │
│             (Base L2)                       │
│                                             │
│  • Deploys new Pool contracts               │
│  • Owned by Midbench multisig               │
└─────────────────────────────────────────────┘
                     │
        ┌────────────┼────────────┐
        ▼            ▼            ▼
   ┌─────────┐  ┌─────────┐  ┌─────────┐
   │ POOL A  │  │ POOL B  │  │ POOL C  │
   │         │  │         │  │         │
   │ ERC20   │  │ ERC20   │  │ ERC20   │
   │ Tokens  │  │ Tokens  │  │ Tokens  │
   └────┬────┘  └────┬────┘  └────┬────┘
        │            │            │
        ▼            ▼            ▼
   ┌─────────────────────────────────────┐
   │           LOAN CONTRACTS            │
   │                                     │
   │  Borrowers pay directly → Pool      │
   │  distributes to token holders       │
   └─────────────────────────────────────┘

3.2 Capital Flow

  1. Midbench seeds Pool → Receives founding tokens
  2. External investors buy tokens → Via sealed-bid auctions
  3. Pool originates loans → USDC sent to borrowers
  4. Borrowers repay → Payments flow to token holders pro-rata

3.3 The Fee-Free Model

Midbench charges zero fees to Pool investors—no management fee, no performance fee, no origination fee.

Instead, Midbench profits by being the founding investor. When loan returns (RR) exceed investor required returns (rr), the founding position captures value.

MidbenchPool Token Investors
Origination costsPaid by Midbench$0
Management fees$0$0
Performance fees$0$0
ReturnsFounding position value capture + pro-rataPro-rata share

Incentive alignment: Since Midbench's returns depend on loan performance, it has direct incentive to underwrite conservatively and minimize defaults.

3.4 The Borrower Experience

Flexible Payments

Unlike traditional loans, there's no auto-debit pulling from the borrower's bank account on a fixed schedule. Borrowers pay when they want, as much as they want. As long as total payments stay above the cumulative minimum, the loan remains in good standing.

Interest accrues by the minute, so every payment immediately reduces what's owed—no waiting for end-of-month processing.

USDC-Native Payments

Borrowers pay in USDC on Base. When paying from a Coinbase account, gas is sponsor-covered, resulting in zero transaction fees for the borrower.

On-Chain Transparency

All loan state—balances, payment history, terms—is stored on-chain and publicly verifiable in real time. The record is immutable: neither Midbench nor any other party can alter payment history or modify balances post-deployment. This eliminates the reconciliation and reporting overhead inherent in traditional servicing.

See it in action: A sample loan report demonstrates the borrower experience—real-time balance, payment history, payment address, and original terms, all derived directly from on-chain state.

3.5 Midbench's Role

Before a loan goes on-chain, Midbench handles all off-chain processes:

  1. Review application — Verify information, assess creditworthiness, determine rate
  2. Fund refinance — Pay off existing loan and issue the new one
  3. Deploy loan contract — Create dedicated payment address on Base

Once deployed, the loan record becomes immutable—Midbench cannot change terms, alter payment history, or modify balances. The loan exists independently, and every payment is recorded automatically.

Midbench remains available for customer support, but the accounting is handled by the loan contract itself.

3.6 The Perpetual ABS — A New Instrument

Midbench Pool tokens represent a structural innovation in asset-backed finance: a Perpetual ABS (a continuously managed, tokenized lending vehicle with no stated maturity).

Traditional asset-backed securities are born dying. An issuer pools loans into a trust, sells tranches, and the trust amortizes as borrowers repay—eventually winding down to zero. Every new lending cycle requires a new securitization: new legal documents, new trust formation, new rating agency engagement, new investor roadshows. The vehicle is disposable by design.

A Midbench Pool is the opposite. It is a living, perpetual vehicle that can:

All of this happens programmatically through smart contracts, with no trust amendments, no bondholder consent votes, no new offering documents, and no incremental administrative cost.

Why This Couldn't Exist Before

Traditional finance attempted perpetual-like credit vehicles, but the cost structure made them impractical or unstable:

Structural BarrierTraditional FinanceOn-Chain (Midbench)
Ongoing administrationTrustee + servicer + custodian (~1%/year)Smart contract (~$0.15/loan/year)
Capital formationMonths of legal, book-building, underwriting per issuanceProgrammatic auction (days)
Investor reportingQuarterly PDF reports, manual reconciliationReal-time on-chain state
BuybacksRequire trust amendments, bondholder consentToken operation
Dynamic pool managementComplex legal governance, conflicts of interestTransparent contract logic
TransparencyInformation asymmetry (manager knows more than investors)All stakeholders see the same real-time data

The ~1% annual intermediary cost isn't just a savings—it is the structural barrier that prevented perpetual ABS from existing. When ongoing administration costs ~1% of assets, a perpetual vehicle must either (a) charge fees that erode investor returns, or (b) be large enough to amortize fixed costs, creating barriers to entry. Smart contracts reduce marginal administration costs to near zero, making perpetual operation economically viable at any scale.

Closest Analogues (and Why They Differ)

Several existing instruments share individual characteristics with the Perpetual ABS, but none combine them all:

InstrumentPerpetual?Dynamic Lending?Programmatic Capital?Direct Cash Flow?Real-Time Transparent?
Traditional ABSNo (amortizes)No (static pool)NoYesNo
CLOsSemi (reinvestment period, then amortizes)Yes (during reinvestment)NoYesNo
REITsYesYesYes (secondary offerings)No (equity, not debt passthrough)Quarterly
BDCsYesYesYesNo (regulated distributions)Quarterly
ABCP ConduitsIn practice (rolls short-term paper)YesYesNo (maturity mismatch)No
Closed-End FundsYesVariesLimited (rights offerings)No (trades at NAV discount)Daily NAV
Midbench PoolYesYesYesYesYes (real-time)

The closest structural analogue is a REIT—a perpetual vehicle that owns assets, pays dividends, and can issue new shares. But REITs are equity instruments backed by real estate with management companies that charge fees. Midbench Pools are direct credit passthrough vehicles with zero-fee smart contract administration.

CLOs have a reinvestment period (typically 3-5 years) during which the manager can originate new loans from principal repayments—but the reinvestment window closes, and the vehicle amortizes to maturity. The Perpetual ABS has no such constraint.

ABCP conduits were perpetual in practice, continuously rolling short-term commercial paper to fund longer-term assets. But the maturity mismatch created systemic fragility—when the commercial paper market froze in 2007-2008, conduits collapsed. Midbench Pools have no maturity mismatch: token holders own a perpetual claim on the underlying asset pool, not short-term paper that must be rolled.

The Innovation

The Perpetual ABS synthesizes five capabilities that have never coexisted in a single credit instrument:

  1. Perpetual life — No stated maturity, no wind-down, no need to recreate the vehicle
  2. Dynamic origination — Continuous lending as capital is available, not batch issuance
  3. Programmatic capital formation — Sealed-bid auctions raise capital without investment banks or offering documents
  4. Direct cash flow passthrough — Borrower payments flow to token holders pro-rata, with no intermediary handling
  5. Real-time, symmetric transparency — Every stakeholder—founding investor, subsequent investor, borrower—sees the same on-chain state simultaneously

This combination is made possible by blockchain infrastructure that collapses the cost of trust, administration, and coordination to near zero. The Perpetual ABS is not an incremental improvement on traditional securitization—it is a new instrument class enabled by a new infrastructure layer.


4. Economic Model

4.1 Key Variables

VariableDescription
RRNet Yield to Pool (net of credit losses)
rrPool Token Investor Required Return
I0I_0Initial seed investment (by Midbench)
ItI_tSubsequent investments (by external investors)

Core requirement: R>rR > r for value creation.

4.2 Loan Pricing Formula

Each loan is priced using:

Gross APR=r+Margin+ECL\text{Gross APR} = r + \text{Margin} + \text{ECL}

Where:

Why Margin = ~1%: Traditional lenders pay ~1% annually for intermediary services (servicing, custody, trustees). Midbench eliminates these costs, so this ~1% can be added to loan pricing without making rates uncompetitive. The Margin creates the RrR - r spread that funds the platform.

Why ~1% is a Conservative Floor:

Traditional auto loan securitization is a profitable business. Investment banks and captive finance companies (Ally, Toyota Financial, Ford Credit) routinely:

  1. Originate or purchase loans at par or slight premium
  2. Pool loans into asset-backed securities
  3. Sell tranches to investors at prices that generate profit

They accomplish this while paying the ~1% in annual intermediary costs (servicers, trustees, custodians). Their profitability comes from multiple sources:

Value SourceDescriptionTypical Magnitude
Origination marginSpread between borrower rate and funding cost1-3% upfront
Excess spreadInterest collected minus investor coupons minus losses0.5-2% annually
Servicing incomeFees for managing the loan portfolio0.25-0.50% annually
Residual valueEquity tranche appreciation if losses are lowVariable

The implication for Midbench: If traditional players generate returns after paying intermediaries, then eliminating those intermediaries provides Midbench with at minimum that ~1%. But Midbench also occupies positions in the value chain that securitizers currently monetize—origination, capital deployment, and residual ownership via founding tokens.

What we claim vs. what may exist:

Traditional SecuritizerMidbench Model
Intermediary costsPaid (~1%)Eliminated
Origination marginCapturedNot modeled
Excess spreadCapturedNot modeled
Residual upsideCapturedCaptured (founding tokens)

The 1% figure represents the identifiable, auditable cost layer being removed—not the total value opportunity. By anchoring projections solely to disintermediation savings and ignoring potential capture of securitizer spreads, the economic model is deliberately conservative. The actual value capture could be higher, but we anchor projections to a defensible floor.

Net Yield to Pool: R=r+MarginR = r + \text{Margin}

With dynamic r based on Treasury rates:

4.2.1 Why Constant R Across Credit Tiers?

A natural question: shouldn't riskier loans require higher R to compensate for greater return volatility?

In finance theory: Higher variance should command a risk premium, even if expected returns are equal. However, this applies at the individual loan level.

In a diversified pool: Idiosyncratic default risk diversifies away. With 10,000+ loans:

Systematic risk is priced into r: Risk that doesn't diversify (recessions affect all borrowers) is reflected in the Pool Token Investor Required Return, which is discovered via auction or market trading. If the pool's credit composition shifts riskier, investors demand higher r.

This approximation works when:

  1. Pool is well-diversified (10,000+ loans)
  2. Pool composition is controlled via underwriting criteria
  3. Investors price the whole pool, not individual loans
  4. Auction/trading mechanisms adjust r if pool risk profile changes

4.3 Value Creation

Each dollar invested creates value when R>rR > r:

NPV per dollar=Rrr\text{NPV per dollar} = \frac{R - r}{r}

With R=6%R = 6\% and r=5%r = 5\%, each dollar creates $0.20 in NPV.

4.4 Value Capture

Value capture is how Midbench profits without charging fees. By eliminating intermediaries, the platform creates the Margin (~1%) that would otherwise go to servicers, custodians, and trustees. As the founding investor, Midbench captures this value through its token position—not through fee extraction.

In an efficient market with known future returns:

Later investors pay fair value and receive fair returns. Midbench is compensated for building the platform and funding origination.

4.5 Numerical Example

Subprime auto refinance market (based on ABS-EE data analysis):

MetricTraditional SubprimeMidbench
Gross borrower APR (market rate)13-14%13-14%
Credit losses~5-6%~5-6%
Intermediary costs~1%~0%
Net investor yield~7%~8%

How the numbers connect (subprime example):

Gross APR       = r + Margin + ECL
    14%         = 7% + 1% + 6%

Net Yield (R)   = r + Margin
     8%         = 7% + 1%

Value Created   = Margin = R - r = 1%

Why All Credit Tiers? Competitive analysis using historical Treasury rates shows Midbench pricing is competitive across all segments: near_prime (+44 bps vs market median), prime (+104 bps), super_prime (+181 bps), and subprime/deep_subprime (within market IQR). The ~100-200 bps spread above market represents intentional margin (Base Margin + Uncertainty Buffer for launch phase), not model error.

Model parameters: R=6%R = 6\%, r=5%r = 5\%, Midbench seeds 100K,100subsequent100K, 100 subsequent 1M raises

MetricValue
Total Capital Raised$100.1M
Total NPV Created$20.0M
Midbench Seed$100K
Value of Midbench Position$4.1M
Midbench IRR60%
External Investor IRR5%

Key insight: External investors earn their required return. Midbench earns outsized returns for being first and funding origination.


5. Stakeholder Analysis

5.1 Pool Token Investors

What you get:

Risk factors:

Comparison to traditional credit funds:

TraditionalMidbench
Net yield4-6%5-6%
FeesManagement + carryNone
TransparencyQuarterly reportsReal-time on-chain
LiquidityLock-upsERC20 transferable
Manager alignmentLimitedShared token holdings

5.2 Midbench Equity Investors

Value capture: Midbench captures value created by disintermediation through its founding positions across multiple Pools.

Returns depend on:

5.3 Borrowers


6. Risk Factors

RiskImpactMitigation
Higher defaultsLower RRConservative underwriting, diversification
Smart contract bugsLoss of fundsAudits, bug bounties, upgradeable proxies
Rate environment changesToken price adjusts to reflect new rrTransparent pricing; investors can enter/exit at fair value
Regulatory changesCompliance costsLegal counsel, KYC/AML infrastructure
Competition from traditional financeCompressed spreadsThe ~1% margin is a conservative floor derived from identifiable intermediary costs. Traditional securitizers operate profitably paying these costs—their continued profitability validates that the spread opportunity exists. Full margin compression would require the entire industry to adopt disintermediated infrastructure, which faces coordination problems and legacy system dependencies
Competition from on-chain playersReduced differentiationFigure proved on-chain lending works but stopped short of full disintermediation (ACH payments). Midbench completes the vision with USDC-native payments, capturing the ~1% they leave on the table. Their $15B validates the market; our architecture captures the remaining opportunity

Critical threshold: If RrR \leq r, no value is created. However, the ~1% margin estimate is anchored to observable intermediary costs, not optimistic projections. Traditional ABS markets validate that spreads above this floor exist—the question is how much Midbench captures, not whether value exists.

6.1 Why the Model is Conservative

The economic projections in this white paper are deliberately anchored to a defensible floor rather than optimistic estimates:

  1. Only disintermediation savings are modeled — The ~1% margin comes from eliminating intermediary costs. No credit is taken for origination margins, excess spread, or other value that traditional securitizers capture.

  2. Traditional players validate the opportunity — Banks and captive finance companies are profitable after paying intermediary costs. Their continued profitability demonstrates that additional value exists in the lending chain beyond what we claim.

  3. Upside is unmodeled — If Midbench captures any portion of what securitizers currently extract (origination spreads, excess spread), returns exceed projections. The model assumes zero capture of these sources.

  4. Conservative credit assumptions — PD model over-predicts defaults (providing safety margin), LGD uses segment averages (not optimistic recovery assumptions), and pricing includes Uncertainty Buffers for launch phase.

This approach means:

By not claiming upside in projections, the model provides a realistic floor that investors can underwrite with confidence.

6.2 Market Validation: Completing What Figure Started

Figure Technologies pioneered on-chain lending and proved it works. Founded in 2018, Figure built the Provenance blockchain and has originated over $15 billion in loans with ownership, custody, and trading occurring on-chain. Their success established a crucial foundation:

Midbench completes the vision.

Figure moved loan records on-chain but left loan payments on legacy rails. Borrowers still pay via ACH bank debits, meaning Figure incurs all the costs of traditional payment infrastructure—processing fees, reconciliation, failed payment handling, and multi-day settlement times.

Midbench takes the final step: fully on-chain payments via USDC.

AspectFigure (First Generation)Midbench (Next Generation)
Loan records✓ On-chain✓ On-chain
Ownership/custody✓ On-chain✓ On-chain
Secondary trading✓ On-chain✓ On-chain
Borrower payments✗ ACH (legacy)✓ USDC (on-chain)
Payment costsIncurredEliminated
Settlement3-5 daysInstant
ReconciliationRequiredAutomatic

The result: ~1% additional margin.

Figure proved that on-chain lending works. Midbench captures the remaining ~1% by eliminating the last legacy dependency—payment infrastructure. This isn't incremental improvement; it's the completion of a fully disintermediated lending stack.

Value LayerFigureMidbench
Securitization economics
Custody/transfer efficiency
Payment disintermediation+~1%

Figure's success at scale validates the foundation. Midbench builds on that foundation to capture the full disintermediation opportunity.


7. Model Validation & Backtesting

Validation run: January 24, 2026

7.1 Data Foundation

The credit model is trained on 16.7 million loans from SEC ABS-EE filings (2021-2025), representing the complete universe of U.S. auto loan securitizations:

MetricValue
Training loans16,694,329
Test set loans734,861
Training default rate2.06%
Issuers represented40+ (captives, banks, subprime specialists)

7.2 PD Model Discrimination

The XGBoost probability-of-default model was validated on a held-out test set:

MetricValue
AUC0.775
Gini0.549
KS Statistic0.438
Calibration StatusNeeds recalibration (over-predicts)

The model correctly rank-orders borrowers by risk (top decile captures 3.85× lift), though predicted PDs exceed actual defaults. This conservative bias is acceptable for launch—overprediction leads to higher APR quotes, providing a safety margin.

7.3 Backtest Results

Historical backtest applying the pricing engine to 500K sampled loans with known outcomes:

MetricResult
Loans analyzed482,102
Approved loans384,699 (80%)
Decline rate20.2%
Total principal$11.7B
Expected interest income$3.02B
Actual credit losses$30.6M
Net P&L$2.99B
Loss coverage ratio99×
Actual default rate1.22%
Avg Treasury Rate (historical)2.80%
Avg Market APR4.95% (median)
Model vs Market+296 bps

Note: Market APR uses median (robust to outliers), excludes rate outliers >30% (data errors) and rate-subvented loans (captive 0% APR promotions).

By credit tier (approved loans):

TierCountPrincipalNet P&LDefault RateModel APR
Super Prime154,187$4.80B$877M0.25%6.30%
Prime103,445$3.21B$638M0.66%6.53%
Near Prime85,063$2.56B$691M2.07%8.39%
Subprime42,004$1.16B$643M4.43%16.29%

APR Comparison (Model vs Market Median):

TierModel APRMarket MedianSpread
Super Prime6.30%3.80%+250 bps
Prime6.53%4.54%+199 bps
Near Prime8.39%6.64%+175 bps
Subprime16.29%11.14%+515 bps

7.4 Market Positioning

Analysis of model APRs vs. actual market rates (sample: 598,671 non-subvented loans):

Note: Rate-subvented loans (31% of ABS pool) are excluded from this analysis. Captive finance 0% APR promotions are manufacturer subsidies, not market-comparable rates.

TierModel APRMarket MedianSpreadAssessment
Super Prime6.30%4.49%+181 bps✅ Competitive
Prime6.53%5.49%+104 bps✅ Competitive
Near Prime8.39%7.95%+44 bps✅ Highly competitive
Subprime16.29%14.09%+220 bps✅ Within IQR
Deep Subprime19.82%18.32%+150 bps✅ Competitive

Estimated market capture: At current pricing with historical Treasury rates, our model is competitive across all segments. Near_prime shows the tightest spreads (+44 bps), followed by prime (+104 bps) and super_prime (+181 bps).

Strategic implication: With dynamic rate-based pricing using historical Treasury rates, Midbench is competitive across all credit segments. The ~200 bps average spread above market represents intentional margin (Base Margin + Uncertainty Buffer) rather than model miscalibration.

7.5 Stress Testing

Profitability assessed under adverse economic scenarios:

ScenarioPD MultiplierLGDProfitable?Loss Coverage
Baseline1.0×83%✅ Yes3.2×
Mild Recession1.5×85%✅ Yes2.0×
Moderate Recession2.0×88%✅ Yes1.4×
Severe Recession3.0×90%✅ Yes1.07×
Auto Sector Crisis1.5×95%✅ Yes1.6×

Key findings:

7.6 Model Limitations (Honest Assessment)

ComponentStatusEvidenceLaunch Posture
PD ModelModerate reliabilityTest AUC 0.775Conservative (over-predicts)
CalibrationOver-predictedMean error 2.5%Acceptable safety margin
LGDSegment averages onlyFlat 83%Validated against chargeoffs
EADEmpirical lookupTerm × tier matrixReasonable
Population adjustmentSpeculativeABS ≠ refinance populationLarge buffers

Launch phase design: Pricing is intentionally conservative. Uncertainty Buffer (100 bps), DeFi Channel Premium, and Segment Risk Margins stack to provide cushion against model error. Early production exists to generate calibration data, not to prove the model is correct.


8. Technical Implementation

8.1 Smart Contracts

Pool Contract: ERC20 token + sealed-bid auctions + loan management + distributions

Loan Contract: A deliberately "dumb" contract—minimal container that holds borrower payments and can be accessed only by Pool

8.2 Security

8.3 Deployment

Built on Base (Coinbase L2):

Zero-fee borrower payments: Coinbase sponsors gas for USDC transfers from Coinbase accounts. This means:

$1.00 paid by borrower=$1.00 received by pool token investors\text{\$1.00 paid by borrower} = \text{\$1.00 received by pool token investors}

Every cent borrowers send reaches investors—no transaction fees, no payment processing costs.

Negligible protocol gas costs: ~0.15/loan/year,coveredbyMidbench.Ona0.15/loan/year, covered by Midbench. On a 35,000 loan saving ~$350/year from disintermediation, gas is over 2,000× smaller than the savings.


9. Conclusion

Midbench eliminates ~1% in annual intermediary costs from consumer lending. This creates value that flows to:

  1. Pool Token Investors: Higher net yields, zero fees, real-time transparency
  2. Midbench: Founding investor returns that fund platform development
  3. Borrowers: Potential for better rates as platform scales

The model works when loan returns exceed investor required returns (R>rR > r). Midbench's founding position creates alignment—both Midbench and Pool investors benefit from strong loan performance.


10. Iterative Capital Raises & Token Pricing

This section details the capital formation mechanics of the Perpetual ABS instrument introduced in §3.6.

10.1 The Iterative Appreciation Model

Because each Midbench Pool is a Perpetual ABS—not a fixed-life trust—it can raise capital through multiple sequential auctions into a single token, indefinitely. This creates iterative appreciation for existing holders:

Round 0: Midbench seeds $100K at BV = $1.00     → 100,000 tokens
Round 1: Investor A buys at $1.20/token         → Premium flows to Pool
         Pool now: $220K assets, 200K tokens    → BV = $1.10
Round 2: Investor B buys at $1.32/token         → Premium flows to Pool
         Pool now: $352K assets, 300K tokens    → BV = $1.173

Each new capital raise at a premium increases book value for all existing holders.

10.2 Fair Value Pricing

The fair value of a pool token is determined by discounting expected cash flows at the investor's required return:

Pfair=Rr×BVP_{fair} = \frac{R}{r} \times BV

Where:

At fair value, the investor earns exactly their required return rr.

Price LevelFormulaInvestor ReturnInterpretation
Below BVP<BVP < BV> RInvestor extracts value from existing holders
At BV (par)P=BVP = BVRInvestor captures full margin
Fair ValueP=Rr×BVP = \frac{R}{r} \times BVrInvestor earns market return
Above fair valueP>Rr×BVP > \frac{R}{r} \times BV< rInvestor subsidizes existing holders

10.3 Reserve Price Rationale

Each auction includes a reserve price—a minimum clearing price below which the auction does not settle. This serves three purposes:

  1. Protect existing holders: New capital should be accretive, not dilutive
  2. Enforce fair value: The reserve price is typically set at fair value (Rr×BV\frac{R}{r} \times BV)
  3. Sustainable business model: Midbench's founding position must appreciate to fund operations

The premium is dynamic, not fixed:

The fair value premium (Rr1\frac{R}{r} - 1) depends on current market conditions:

ScenarioRrPremium
Base case6.0%5.0%20%
Rising rates7.5%6.5%15%
Compressed spreads5.5%5.0%10%
Wider spreads7.0%5.0%40%

The 20% figure is illustrative based on current market conditions (R ≈ 6%, r ≈ 5%), not a guarantee. Actual premiums will vary with:

10.4 Fair Value by Round

As book value compounds through successive raises, the fair value price increases. Note: The premium percentage is not fixed—it depends on R and r at the time of each raise:

RoundBV BeforeR/r at TimeFair ValuePremium
1$1.001.20 (6%/5%)$1.2020%
2$1.101.15 (6.5%/5.65%)$1.2715%
3$1.131.25 (6.25%/5%)$1.4125%

The premium floats with market conditions; the absolute price reflects both BV growth and the current R/r ratio.

10.5 What You're Buying

When bidding in a Pool token auction, investors are purchasing:

  1. A pro-rata claim on future loan cash flows that yield RR annually
  2. NOT a claim on current USDC (which will be deployed into loans)
  3. A perpetual instrument with no maturity date

Your expected return depends on your entry price:

Expected Return=R×BVPbid\text{Expected Return} = R \times \frac{BV}{P_{bid}}

If You Bid...Your Expected ReturnRisk/Reward
$1.00 (BV)6.00%Maximum upside—you believe R will be achieved
$1.105.45%Moderate discount for platform risk
$1.20 (fair value)5.00%You earn market return for auto credit risk

10.6 Comparison to Traditional ABS Pricing

AspectTraditional ABSMidbench Pool Tokens
Pricing mechanismBook-building with underwriter guidanceSealed-bid auction with reserve price
Minimum priceSoft (issuer can pull deal)Hard (settlement fails if not met)
Price discoveryUnderwriter + institutional investorsMarket via auction
Prior investor protectionN/A (each deal is independent)Reserve price protects existing holders
Issuer recourseWithdraw dealAuction fails; bids refunded

The reserve price mechanism is similar to Dutch auction IPOs (e.g., Google 2004), where the issuer sets a floor and lets the market determine the clearing price above it.

10.7 Auction Failure

If an auction cannot clear at or above the reserve price:

  1. The auction does not settle
  2. All bidder commitments are refunded
  3. No new tokens are minted
  4. Existing holders are unaffected

This is a feature, not a bug. A failed auction indicates the market does not value the opportunity at fair value—Midbench can then reassess loan pipeline, credit performance, or market conditions.

10.8 Reserve Price Calculation

For each auction, the reserve price is computed as:

Preserve=Rr×BVcurrentP_{reserve} = \frac{R}{r} \times BV_{current}

Using observable inputs:

ComponentSourceExample (Jan 2026)
Book Value (BV)pool.totalAssets() / pool.totalSupply()$1.00
5-Year TreasuryFRED (DGS5)4.25%
Auto ABS SpreadBloomberg (BAUTO)0.75%
Required Return (r)Treasury + Spread5.00%
Net Yield (R)r + Margin6.00%
Reserve PriceR/r × BV$1.20

Appendix: Model Equations

EquationDescription
Dt=RBVt1D_t = R \cdot BV_{t-1}Dividends = Net Yield × Book Value
NPVt=ItRrrNPV_t = I_t \cdot \frac{R-r}{r}NPV per investment
Vt=RrBVtV_t = \frac{R}{r} \cdot BV_tTerminal market value
Preserve=RrBVP_{reserve} = \frac{R}{r} \cdot BVReserve price (fair value)

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This white paper is for informational purposes only and does not constitute an offer to sell or a solicitation of an offer to buy any securities.