How Smart Contracts Work

Introduction: Why This Matters

If you're thinking about using Bulisolio to get a crypto loan, you might be wondering: "How does this actually work? Is it safe? What am I really agreeing to?"

This guide answers those questions. We'll explain every piece of technology involved in your loan — from smart contracts to oracles to liquidity pools — in simple, everyday language.

You don't need to be a tech expert to understand this. We wrote it the same way we'd explain it to a friend over coffee.

By the end of this guide, you'll understand exactly what happens when you tap "Get Loan" in the Bulisolio app. No mysteries, no confusion — just clear, honest explanations.

1 What Are Smart Contracts?

Think of It Like a Vending Machine

You know how a vending machine works, right?

1. You put in $2
2. You press B4
3. The machine automatically gives you a bag of chips

The vending machine doesn't need a person to hand you the chips. It just follows its programming: IF money inserted AND button pressed, THEN dispense item.

Smart contracts work the same way. They're like digital vending machines. You put something in (like crypto), and the contract automatically gives you something back (like a loan) based on its programming.

Key Differences from Regular Contracts

Traditional Contract (like a bank loan):

• Written on paper or in a PDF
• Requires humans to process (loan officers, managers)
• Can take days or weeks to complete
• You have to trust the bank to follow the contract
• Bank can change terms or reject you for unclear reasons

Smart Contract (like a Bulisolio loan):

• Written in computer code on the blockchain
• No humans involved — runs automatically
• Completes in seconds
• You don't have to trust anyone — the code does exactly what it says
• Terms are locked in and can't be changed

Why "Smart"?

They're called "smart" because they can make decisions on their own based on rules. For example:

Why Smart Contracts Are Safer

1. Transparency: Anyone can see the code and verify what it does. No hidden terms.

2. No corruption: The contract can't be bribed, can't play favorites, can't have a bad day.

3. Guaranteed execution: If you meet the conditions, you WILL get your loan. The contract can't change its mind.

4. No middleman: You're not trusting a bank or person — you're trusting math and code.

The Downside

Smart contracts have one big limitation: they can't be changed after they're created.

This is good (protects you from bait-and-switch) but also means if there's a bug in the code, it can't be fixed. That's why smart contracts go through extensive security audits before being used.

2 What Is Base?

Blockchain Basics

Before we explain Base specifically, let's cover what a blockchain is:

Imagine a giant notebook that everyone in the world can see and write in, but no one can erase anything from. Every time someone sends crypto or uses a smart contract, it gets written down in this notebook permanently.

That's a blockchain — a shared, permanent record of everything that happens.

Why Base Instead of Ethereum?

You might have heard of Ethereum — it's the most famous blockchain for smart contracts. Base is built ON TOP of Ethereum, which means it gets all of Ethereum's security but with some big improvements:

Why This Matters for Your Loan

Fast = Better Experience: When you request a loan, you get it in 2 seconds instead of waiting 15 seconds.

Cheap = More Money for You: If it costs $20 in fees to execute a loan on Ethereum, that's $20 less you receive. On Base, fees are pennies.

Secure = Peace of Mind: Base uses the same security as Ethereum (the most battle-tested blockchain), so your crypto is safe.

Who Runs Base?

Base was created by Coinbase, one of the largest and most trusted crypto companies in the world. They built Base to make blockchain apps faster and cheaper while keeping them just as secure.

3 What Are Lending Protocols?

How Traditional Lending Works

Normally, if you want a loan:

1. You go to a bank
2. They check your credit score, income, job history
3. They decide if you're "worthy" of a loan
4. If approved, they give you money and charge interest
5. You pay them back over time

The bank makes money from the interest you pay.

How Crypto Lending Protocols Work

With a lending protocol:

1. People deposit crypto into a pool (we'll explain pools in the next section)
2. You put up crypto as collateral
3. The smart contract automatically lends you money based on math — no credit check, no approval process
4. The smart contract charges interest
5. You pay back the loan whenever you want

The interest you pay goes to the people who deposited crypto in the pool.

Popular Lending Protocols on Base

Bulisolio connects you to these trusted lending protocols:

Aave v3:

• The biggest and most trusted lending protocol
• Has been running since 2020 with billions of dollars in loans
• Used by professional investors and regular people
• Multiple security audits by top firms

Compound v3:

• Another major lending protocol, been around since 2018
• Known for simple, reliable smart contracts
• Also used by institutions and individuals
• Thoroughly audited and battle-tested

Why Use a Protocol Instead of a Crypto Exchange?

Some crypto exchanges (like Coinbase or Kraken) offer loans too. Here's why protocols are different:

Exchange Loans:

• You give your crypto to the exchange (they control it)
• They decide loan terms and can change them
• If the exchange gets hacked or goes bankrupt, your crypto might be lost
• They might freeze your account or deny your withdrawal

Protocol Loans (via Bulisolio):

• Your crypto stays in a smart contract (you control it with your private keys)
• Terms are locked in code and can't be changed
• No one can freeze your account — the contract just follows rules
• Even if Bulisolio shut down tomorrow, your loan continues on the blockchain

4 What Are Liquidity Pools?

The Community Piggy Bank Analogy

Imagine your neighborhood sets up a community piggy bank:

1. 10 neighbors each put in $1,000 (total: $10,000 in the piggy bank)
2. Anyone in the neighborhood can borrow from it if they leave collateral
3. Borrowers pay 5% interest per year
4. That interest gets split among the 10 people who put money in

That's basically how a liquidity pool works, except:

• It's on the blockchain instead of a physical piggy bank
• It's managed by smart contracts instead of neighbors
• Anyone in the world can participate
• It happens instantly with no paperwork

Why Pools Exist

When you want to borrow money, it has to come from somewhere. In traditional banking, it comes from other people's savings accounts. In crypto lending, it comes from liquidity pools.

People who deposit crypto into pools are called "liquidity providers" or "lenders." They earn interest when you borrow their crypto.

Most Liquid Pools on Base

Bulisolio only uses the most liquid (most popular) pools to ensure your loans execute quickly and smoothly:

1. ETH (Ethereum) Pool

• Typically has $50-500 million available to borrow
• Most popular collateral for loans
• Interest rates usually 2-8% per year

2. WBTC (Wrapped Bitcoin) Pool

• Bitcoin on the Base blockchain
• Typically has $20-200 million available
• Interest rates usually 2-7% per year

3. USDC Pool (What You Borrow)

• The stablecoin you receive as your loan
• Always worth $1 per USDC
• Massive liquidity (billions of dollars)

Why "Liquid" Matters

A pool with high liquidity means:

• Your loan executes instantly (plenty of money available)
• Interest rates are more stable
• You can borrow larger amounts
• It's easier to repay your loan

Low liquidity pools might not have enough money when you want a loan, or interest rates might spike unpredictably.

5 What Are Crypto Oracles?

The Problem Oracles Solve

Smart contracts live on the blockchain. They're isolated — they can't access the internet, can't check CoinGecko or Coinbase to see what ETH is worth right now.

But for loans, the contract NEEDS to know prices:

• Is your collateral worth more than your loan?
• Has the price dropped enough to trigger liquidation?
• How much USDC should you get for your ETH?

That's where oracles come in. They're like messengers that bring price information into the blockchain.

How Oracles Work

The Most Trusted Oracle: Chainlink

Bulisolio (via Aave and Compound) uses Chainlink — the industry standard for crypto price feeds. Here's why it's trusted:

1. Decentralized:

• Not one company providing prices — it's dozens of independent providers
• If one provider gives a bad price, the others outvote it

2. Multiple Data Sources:

• Chainlink checks 7-15 different exchanges for each price
• Takes the median (middle value) to avoid manipulation

3. Cryptographically Signed:

• Each price update is digitally signed (proven to come from Chainlink)
• Can't be faked or tampered with

4. Battle-Tested:

• Chainlink secures billions of dollars in DeFi protocols
• Been running since 2019 without major issues

Why Oracle Accuracy Matters

If an oracle gives the wrong price, bad things can happen:

Price too high: You might get liquidated when you shouldn't be (contract thinks your collateral is worth more than it actually is, so it lets you over-borrow)

Price too low: You get less of a loan than you should (contract thinks your collateral is worth less than it actually is)

Chainlink's design makes sure prices are as accurate as possible.

6 What Are Token Swaps?

Why Swaps Matter for Loans

Bulisolio loans work like this:

1. You deposit collateral (ETH or BTC)
2. You borrow USDC

But what if you have SOL (Solana) instead of ETH? Or USDC instead of ETH?

That's where swaps come in. Bulisolio can automatically swap your crypto into the right format before executing your loan.

How Swaps Work

There are special smart contracts called DEXs (Decentralized Exchanges) that let you swap crypto instantly. Popular ones on Base include:

• Uniswap: The biggest DEX, handles billions in swaps per day
• Aerodrome: Base-specific DEX optimized for low fees
• Curve: Specialized for swapping stablecoins

Example: Converting SOL to ETH

Swap Costs

Swaps aren't free. There are two costs:

1. Trading Fee (0.05% - 0.30%):

• Paid to liquidity providers who make swaps possible
• Example: Swapping $10,000 of SOL might cost $10-$30 in fees

2. Gas Fee ($0.01 - $0.10 on Base):

• Paid to execute the swap transaction on the blockchain
• On Base, this is negligible (pennies)

Slippage

When you swap crypto, the price can change slightly between when you click "Swap" and when it executes (a few seconds later). This is called slippage.

Bulisolio sets a 0.5% slippage tolerance, meaning if the price changes more than 0.5%, the swap is canceled and you're notified.

7 What Are Gas Fees?

Why Gas Fees Exist

When you do anything on a blockchain — send crypto, execute a smart contract, take out a loan — computers around the world process your transaction. Those computers cost money to run (electricity, hardware, internet). Gas fees pay for that work.

Gas Fees on Base vs Ethereum

One of the biggest reasons Bulisolio chose Base:

Why such a difference? Base processes transactions more efficiently than Ethereum mainnet. It's like the difference between sending a letter across the country (expensive) vs across town (cheap).

Who Pays Gas Fees?

When you take out a Bulisolio loan:

• Depositing collateral: You pay gas (but it's $0.05-$0.10)
• Receiving loan USDC: Bulisolio pays gas (included in Concierge Commission)
• Repaying loan: You pay gas (again, $0.05-$0.10)

Gas Prices Fluctuate

Gas fees aren't fixed — they change based on network demand:

• Low demand (2am on a Tuesday): $0.01 per transaction
• Normal demand: $0.05 - $0.10 per transaction
• High demand (major NFT drop, everyone rushing in): $0.20 - $0.50

Even at peak times, Base fees are a tiny fraction of Ethereum fees.

Why This Matters for Your Loan

Imagine you want to borrow $1,000:

On Ethereum:

• Deposit collateral: $30 gas fee
• Execute loan: $50 gas fee
• Total fees: $80 (8% of your loan!)

On Base (via Bulisolio):

• Deposit collateral: $0.10 gas fee
• Execute loan: $0.20 gas fee (covered by Concierge Commission)
• Total fees you pay: $0.10 (0.01% of your loan)

8 What Is Collateral?

Real-World Example

You've probably heard of collateral in traditional finance:

Car Loan:

• Bank lends you $20,000 to buy a car
• The car is the collateral
• If you stop making payments, bank repossesses the car

Pawn Shop:

• You bring in a gold watch worth $1,000
• Pawn shop lends you $500
• The watch is the collateral
• If you don't pay back the $500, they keep the watch

Crypto Collateral

With Bulisolio loans, your collateral is crypto (ETH or BTC). Here's how it works:

1. You deposit $10,000 worth of ETH into the smart contract
2. The contract locks up your ETH (you can't access it)
3. The contract lends you $7,000 in USDC (70% of your collateral value)
4. You can spend the $7,000 USDC however you want
5. When you repay the $7,000 (plus interest), the contract unlocks your ETH
6. If you don't repay, the contract automatically sells your ETH to recover the loan

Why Crypto Collateral Is Different

Traditional Collateral (Car/House):

• Hard to sell quickly
• Value can be subjective (is that car really worth $20,000?)
• Requires lawyers/paperwork to repossess
• Takes weeks or months to liquidate

Crypto Collateral (ETH/BTC):

• Can be sold in seconds
• Value is clear (check any exchange)
• No lawyers needed — smart contract handles it automatically
• Instant liquidation if needed

You Still Own Your Collateral

This is important: the crypto is still yours. The smart contract isn't taking ownership — it's just holding it in escrow until you repay.

Think of it like checking your coat at a restaurant. The coat check holds your coat, but it's still your coat. When you're done eating, you give them the ticket and get your coat back.

Types of Acceptable Collateral

Bulisolio only accepts the most stable, liquid crypto as collateral:

✅ Accepted:

• ETH (Ethereum): Most popular, highly liquid
• WBTC (Wrapped Bitcoin): Bitcoin on Base, very stable

❌ Not Accepted (Too Risky):

• Meme coins (SHIB, DOGE, PEPE) — too volatile
• Small altcoins — not liquid enough
• NFTs — value too subjective
• Stablecoins — defeats the purpose (why borrow against $1 to get $0.70?)

9 What Is LTV (Loan-to-Value)?

The Math

LTV is calculated like this:

Why LTV Matters

LTV determines how risky your loan is:

Low LTV (30-50%):

• Very safe — lots of buffer if collateral price drops
• Example: Collateral worth $10,000, loan of $3,000 (30% LTV)
• ETH would have to drop 70% before you're in danger

Medium LTV (50-70%):

• Balanced — reasonable risk, decent loan size
• Example: Collateral worth $10,000, loan of $6,000 (60% LTV)
• ETH would have to drop 40% before you're in danger

High LTV (70-85%):

• Riskier — less buffer, larger loan
• Example: Collateral worth $10,000, loan of $8,000 (80% LTV)
• ETH would only have to drop 20% before liquidation risk

Maximum LTV Limits

Different lending protocols have different maximum LTV limits:

Why isn't max LTV 100%? Because if you could borrow 100% of your collateral's value, even a tiny price drop would trigger liquidation. The gap between your LTV and 100% is your safety buffer.

How to Maximize Your LTV

If you want the biggest loan possible relative to your collateral, here's how to improve your maximum LTV:

1. Build Your Trust Score: Higher Trust Score = higher max LTV (see the Truth in Lending doc)
2. Use ETH instead of BTC: ETH typically has higher max LTV
3. Borrow During Low Volatility: When markets are calm, Bulisolio increases max LTV limits
4. Become a Legend Affiliate: Legend affiliates get 85% max LTV (5% below smart contract limit)
5. Maintain a High HODL Index: Holding crypto long-term = higher max LTV

LTV Changes Over Time

Here's the tricky part: your LTV changes as crypto prices change.

10 What Is Liquidity Health?

The Health Factor Formula

Lending protocols calculate Health Factor like this:

What the Numbers Mean

Health Factor > 1.5:

• Very safe — plenty of cushion
• Collateral would have to drop 33%+ before danger
• Sleep easy 😴

Health Factor 1.2 - 1.5:

• Moderately safe — some risk if market drops
• Check daily, consider adding more collateral
• Stay alert 👀

Health Factor 1.0 - 1.2:

• Risky zone — one bad day could trigger liquidation
• Add collateral OR repay part of your loan ASAP
• Urgent action needed! ⚠️

Health Factor < 1.0:

• Liquidation happens automatically
• Too late to save your collateral 💀

How Bulisolio Helps You Monitor Health

The Bulisolio app shows your Health Factor in real-time on the loan dashboard:

• Green indicator (> 1.5): "Your loan is healthy"
• Yellow indicator (1.2 - 1.5): "Consider adding collateral"
• Red indicator (< 1.2): "Urgent: Risk of liquidation"

Concierge Voice also sends you push notifications:

• "Your Health Factor dropped to 1.3. Would you like to add more ETH?"
• "Warning: Your loan health is at 1.1. Add collateral to avoid liquidation."
• "Critical: Health Factor 1.05. Liquidation imminent. Act now."

How to Improve Your Health Factor

If your Health Factor is dropping, you have three options:

Option 1: Add More Collateral

• Deposit more ETH or BTC to increase collateral value
• Instantly improves Health Factor
• You keep your full loan amount

Option 2: Repay Part of the Loan

• Pay back some USDC to reduce loan amount
• Also instantly improves Health Factor
• Partial repayment is allowed

Option 3: Hope the Price Recovers

• If ETH price goes back up, Health Factor improves automatically
• Risky — price might keep dropping instead
• Only do this if you're confident and Health Factor is still > 1.2

11 What Is Liquidation and When Does It Happen?

Why Liquidation Exists

Remember: when you borrow from a lending pool, that money came from other people. The smart contract's job is to protect those lenders.

If your collateral drops in value so much that it's worth less than your loan, the contract has to act fast to make sure the lenders don't lose money.

The Exact Trigger

Liquidation happens when your Health Factor drops below 1.0.

Let's see a real scenario:

Liquidation Penalty

When you get liquidated, you don't just lose the collateral equal to your loan — you also pay a liquidation penalty (typically 5-10%).

Why the penalty exists:

• Pays "liquidators" (bots that execute the liquidation transaction)
• Covers smart contract gas fees
• Incentivizes you to avoid liquidation
• Protects lenders from losses due to rapid price drops

Example:

• You owe $8,000
• Liquidation penalty: 5%
• Total amount sold: $8,000 + ($8,000 × 0.05) = $8,400
• You lose $8,400 worth of collateral instead of just $8,000

Can You Stop a Liquidation?

Before it happens: Yes! Add collateral or repay part of your loan to get Health Factor above 1.0.

After it happens: No. Smart contracts execute instantly. Once Health Factor < 1.0, liquidation triggers in seconds.

Warning Signs Before Liquidation

Bulisolio gives you multiple warnings:

• Health Factor 1.3: Yellow warning in app
• Health Factor 1.2: Push notification
• Health Factor 1.1: Email alert + urgent push notification
• Health Factor 1.05: Critical alert + Concierge Voice calls you

You typically have hours or even days of warnings before liquidation, unless there's a sudden flash crash.

12 What Is Bulisolio's Role?

You might be wondering: "If smart contracts do everything automatically, what does Bulisolio actually do? Why can't I just use Aave or Compound directly?"

Great question! Here's what Bulisolio provides:

1. Simplified User Experience

Without Bulisolio:

• You need to understand Web3 wallets (MetaMask, WalletConnect)
• You need to find the right lending protocol yourself
• You need to understand smart contract interfaces
• You need to manually check Health Factors
• You need to do your own swaps if you have the wrong crypto
• You need to set up your own alerts and monitoring

With Bulisolio:

• Simple app interface — just tap "Get Loan"
• We find the best lending protocol for you automatically
• Concierge Voice handles all the technical details
• Automated monitoring with proactive alerts
• Automatic swaps if needed
• 24/7 AI support to answer questions

2. Smart Routing

Bulisolio checks multiple lending protocols (Aave, Compound, etc.) and picks the one with:

• Lowest interest rate for your loan
• Best liquidity (fastest execution)
• Highest LTV limits
• Most favorable terms overall

You get the best deal without having to research and compare manually.

3. Risk Management & Loan Underwriting

While smart contracts have maximum LTV limits (e.g., 83%), Bulisolio uses its Loan Underwriting Engine (LUE) to give you a personalized LTV limit based on:

• Your Trust Score
• Your HODL Index
• Current market volatility
• Your loan history

This protects you from over-borrowing and reduces your liquidation risk.

4. Proactive Protection

Bulisolio monitors your loan 24/7 and:

• Sends alerts before you're in danger
• Suggests exactly how much to add/repay to stay safe
• Can auto-execute protective actions (if you enable it)
• Educates you on what's happening via Concierge Voice

5. Multi-Currency Support

Have SOL but the lending pool wants ETH? Bulisolio automatically:

1. Swaps your SOL for ETH at the best rate
2. Deposits the ETH as collateral
3. Executes your loan

All in one seamless transaction.

6. Spending Integration

Once you receive your USDC loan, Bulisolio makes it easy to actually spend it:

• Spend directly from Secure Vault via non-custodial Visa card
• Transfer to any external wallet via WalletConnect

You don't have to figure out how to convert USDC to spendable cash — we handle it.

7. Trust Scoring & Better Terms

As you build Trust Score by:

• Holding crypto long-term (HODL Index)
• Paying loans on time
• Maintaining healthy loans

Bulisolio rewards you with:

• Higher LTV limits (borrow more)
• Lower Concierge Commission rates
• Priority support

13 The Bulisolio Secure Vault Wallet

Why You Need a Vault Wallet

To use smart contracts on Base, you need a wallet on the Base network. But most people only have:

• Bitcoin wallet (can't use on Base)
• Ethereum mainnet wallet (different network than Base)
• Exchange account (Coinbase/Kraken, not a real wallet)

The Vault Wallet solves this. It's a Base network wallet that:

• Is created automatically when you complete KYC
• Lives on your device (you control it)
• Can hold USDC, ETH, WBTC, and other Base tokens
• Works with smart contracts on Base

How the Vault Wallet Works

The Vault Wallet uses threshold cryptography (MPC - Multi-Party Computation) to keep your crypto secure. Instead of one private key that could be lost or stolen, your wallet is protected by three shards:

Shard 1: Device Shard

• Stored in your phone/computer's secure hardware chip
• Can't be extracted or copied
• Lost if you lose your device (but see below)

Shard 2: Identity Shard

• Tied to your Apple ID / Google Account
• Used for biometric recovery (Face ID / Touch ID)
• Survives device loss

Shard 3: Recovery Phrase Shard

• Derived from your 12-word recovery phrase
• You write this down and keep it safe
• Lets you recover wallet on any device

2-out-of-3 Recovery: You only need 2 of the 3 shards to access your wallet. This means:

• Lose your device? Use Identity + Recovery Phrase on a new device
• Lose your recovery phrase? Use Device + Identity
• Switch to a new phone? Use Identity + Recovery Phrase

What Goes in the Vault Wallet

The Vault Wallet is used for three main purposes:

1. Loan Collateral & Proceeds

• You transfer ETH/BTC to your Vault Wallet
• Vault Wallet deposits it into the smart contract
• Loan proceeds (USDC) are sent to your Vault Wallet

2. Affiliate Commission Payouts

• If you're an affiliate, commissions are paid in USDC
• USDC is sent to your Vault Wallet on the 15th of each month
• You can then withdraw it or use it however you want

3. Loan Repayments

• When you repay a loan, USDC comes from your Vault Wallet
• Concierge Voice can help you fund your Secure Vault

Security Features

• No single point of failure: Losing one shard doesn't lose your wallet
• Encrypted backups: Shards are encrypted with military-grade encryption
• Biometric access: Face ID / Touch ID for daily use
• Non-custodial: Bulisolio never has access to your private keys
• Open-source: Wallet code is audited and transparent

14 Why Bulisolio Charges a Concierge Commission

Let's be completely transparent about Bulisolio's business model and why we charge a commission.

What Is the Concierge Commission?

The Concierge Commission is a small percentage fee (typically 0.20% - 0.50%) deducted from your loan proceeds. It's a one-time fee, not a recurring charge.

What You're Paying For

That $35 (in the example above) pays for:

1. AI Infrastructure (~$12)

• Gemini and Claude API costs for Concierge Voice
• 24/7 monitoring and alerts
• Natural language processing
• Personalized loan recommendations

2. Blockchain Gas Fees (~$8)

• Moving your collateral to the vault wallet
• Executing the loan smart contract
• Sending you the USDC proceeds
• All the swaps and routing needed

3. Smart Routing & Risk Management (~$5)

• Checking multiple protocols to find best rates
• Loan Underwriting Engine calculations
• Trust Score and HODL Index tracking
• Personalized LTV limit determination

4. Integration Services (~$5)

• Non-custodial Visa card for spending your USDC
• WalletConnect protocol support

5. Security & Compliance (~$3)

• KYC verification
• Security audits and monitoring
• Regulatory compliance
• Data encryption and storage

6. Support & Development (~$2)

• Customer support team
• App maintenance and updates
• New feature development
• Bug bounty program

Why Not Just Use Aave Directly?

You absolutely can! Aave and Compound are public protocols. But here's what you're doing yourself:

• Learning Web3 wallet setup and security
• Manually bridging assets to Base
• Understanding smart contract interfaces
• Checking multiple protocols for best rates
• Setting up your own monitoring and alerts
• Manually converting USDC to spendable cash
• Figuring out liquidation protection strategies

If you have the time and technical skill, great! But most people would rather pay $35 to have all of this handled professionally.

How Commission Rates Are Determined

Your rate depends on several factors (see Truth in Lending for details):

• Trust Tier: Higher tier = lower rate (0.20% for Legend, 0.50% for Starter)
• Loan Amount: Larger loans may get slightly lower rates
• Active Promotions: We occasionally run promotional rates
• Legend Affiliate Status: Legend affiliates get the lowest available rate

The Value Proposition

Compare Bulisolio to traditional alternatives:

15 How Bulisolio Keeps You Safe from Liquidation

Liquidation is the biggest risk with crypto loans. Here's how Bulisolio protects you:

1. Conservative LTV Limits

While Aave might allow 83% LTV, Bulisolio's underwriting caps you at 75% or less (depending on your Trust Tier and market conditions). This 8%+ buffer protects you from unexpected price swings.

2. Real-Time Monitoring

Bulisolio checks your Health Factor every 30 seconds and:

• Detects drops before they become critical
• Sends alerts at multiple warning levels (1.3, 1.2, 1.1, 1.05)
• Calculates exactly how much to add/repay to stay safe

3. Volatility-Adjusted Limits

When crypto markets get volatile, Bulisolio automatically:

• Lowers maximum LTV for new loans
• Sends extra alerts to users with existing loans
• Recommends adding collateral proactively

4. Concierge Voice Education

Most liquidations happen because users don't understand the risks. Concierge Voice:

• Explains liquidation in simple terms
• Shows you scenarios: "If ETH drops 20%, here's what happens"
• Walks you through how to protect yourself
• Answers questions 24/7

5. Auto-Protection (Optional)

You can enable "Auto-Add Collateral" where Bulisolio:

• Automatically moves crypto from your other wallets to your vault
• Deposits it as additional collateral if Health Factor drops below 1.2
• Prevents liquidation without you having to manually intervene

(This requires connecting external wallets via WalletConnect and pre-authorizing the action)

6. Multi-Level Alerts

Bulisolio never lets you be surprised by liquidation:

7. Recommended Safety Practices

Bulisolio recommends (but doesn't force) these practices:

• Borrow at 60% LTV or less instead of maxing out at 75%
• Set aside extra collateral that you can add quickly if needed
• Check your loan daily during volatile markets
• Enable push notifications so you never miss an alert
• Keep some USDC in your vault for partial repayments if needed

Summary: Putting It All Together

Let's recap everything you've learned with a complete loan example:

Key Takeaways

• Smart contracts execute your loan automatically based on code
• Base makes transactions fast (2 sec) and cheap ($0.01-$0.10)
• Lending protocols (Aave/Compound) provide the USDC you borrow
• Liquidity pools are where the borrowed USDC comes from
• Oracles (Chainlink) tell smart contracts what crypto prices are
• Swaps let you use any crypto as collateral
• Gas fees are tiny on Base (usually under $0.20)
• Collateral is your crypto locked in the smart contract
• LTV is what percentage of your collateral you're borrowing
• Health Factor shows if your loan is safe (>1.0) or in danger (<1.0)
• Liquidation happens automatically if Health Factor < 1.0
• Bulisolio simplifies everything, monitors 24/7, and protects you
• Vault Wallet is your secure Base wallet with 3-shard protection
• Concierge Commission (~0.35%) pays for convenience and services
• Safety features include alerts, conservative limits, and education

Final Thoughts

Crypto loans powered by smart contracts are a revolutionary new technology. They're faster, cheaper, more transparent, and more accessible than traditional loans. But they're also complex and have unique risks.

Bulisolio exists to bridge that gap — to give you all the benefits of DeFi lending without requiring you to become a blockchain expert. We handle the complexity, you get the loan.

Have questions? Ask Concierge Voice in the app, or email us at education@bulisolio.com. We're here to help you understand and use this technology safely and successfully.

16 What Are Delegated Loans? New

Why Delegated Loans Exist

Standard smart contract loans (we call these Class 1 loans) only let you borrow against collateral you already have. If you have $5,000 in ETH, you can borrow up to a certain percentage of that — nothing more. But what if your crypto portfolio is smaller than the loan you need? Or what if you need a loan and you're waiting for more ETH to arrive?

Delegated loans solve this. Bulisolio moves a portion of its own USDC treasury capital onto the Base blockchain to co-sign your smart contract loan. The combined collateral — yours plus Bulisolio's — backs a larger loan than your crypto alone could support.

Think of it like a co-signer on a car loan. Your friend (Bulisolio) has good credit and money, and they put their name on the loan with you. You get approved for a bigger loan. If you don't pay, your co-signer is on the hook. That's why co-signers charge fees — and why delegated loans have higher commission rates.

The Four Loan Classes

Bulisolio offers four loan types, called "loan classes." Your Loan Underwriting Engine (LUE) automatically assigns you the best class you qualify for:

Who Qualifies for Delegated Loans?

Delegated loans (Classes 2, 3, 4) require more than a Premium subscription and KYC. Because Bulisolio's own capital is at risk, underwriting uses stricter criteria:

Spectral Finance Score: Spectral Finance is an on-chain credit scoring service. It reads your public blockchain history — not your bank credit score — and gives you a score based on how you've handled DeFi loans and crypto in the past. A high Spectral score means you've proven you manage on-chain money responsibly. Class 2 loans require a Spectral score of 550 or higher. Class 3 and 4 loans require 650 or higher.

Coinbase EAS Verification (Classes 3 and 4): EAS stands for "Ethereum Attestation Service." When you verify your identity through Coinbase, they issue a tamper-proof stamp on the blockchain (called an attestation) confirming who you are. This adds an extra layer of identity trust for higher-risk delegated loans. Concierge Voice will walk you through getting an EAS attestation if you need it.

HODL Index Tier (Class 2): You must be at Gold or Diamond HODL tier to qualify for Class 2 loans. This shows you hold crypto long-term and are less likely to panic during market downturns.

Delegation Reserve Availability: Bulisolio maintains a dedicated Delegation Reserve — a portion of its treasury set aside to back delegated loans. When the reserve is below a minimum threshold, all delegated loan options are temporarily suspended across all users. This is a safety mechanism to protect Bulisolio's treasury and ensure all active delegated loans remain well-funded. Class 1 loans are always available regardless.

Mandatory Minimum Payments for Delegated Loans

Unlike Class 1 loans (where payments are voluntary), Classes 2, 3, and 4 require mandatory monthly minimum payments. Here's why: if you don't make payments on a delegated loan and the collateral gets liquidated, Bulisolio loses the capital it co-signed. Mandatory payments keep your loan health factor in a safe range and reduce Bulisolio's risk.

Missing a mandatory payment immediately freezes your eligibility for future delegated loans, triggers escalated monitoring by the Risk Sentinel, and deducts 200 points from your Trust Score — double the penalty for a Class 1 missed payment. Concierge Voice will send urgent reminders and give you a cure window to catch up before any further action is taken.

Class 4: Legend Affiliate Line of Credit (LALoC)

Class 4 is special — it's a revolving line of credit, not a one-time loan. Legend-tier affiliates (those with 500 or more active referred subscribers) who are also Premium subscribers can apply for a LALoC with a credit limit that scales with their affiliate subscriber count, up to $50,000.

A revolving credit line works like a credit card. You draw funds when you need them, repay them, and the credit becomes available again. Each draw has its own commission rate (dynamic, based on a formula that includes market conditions and a Fear & Greed Index component) and mandatory minimum payment. The idea is that Legend affiliates have deeply committed to the Bulisolio ecosystem and have demonstrated long-term trustworthiness — so they earn access to a flexible, recurring lending facility.

17 What Is the Bulisolio Escrow Contract? New

Why a Separate Escrow Contract?

When you take a Class 1 (SC) loan, only one smart contract is involved: the lending protocol (Aave or Compound) that holds your collateral and manages the loan. If you don't make payments, you just risk liquidation — which only affects your collateral, not Bulisolio's capital.

But for delegated loans (Classes 2, 3, and 4), Bulisolio has skin in the game. Its own capital is locked in or co-pledged to your loan. The Escrow Contract is the mechanism that protects this capital. Think of it as the legally binding co-signer agreement — except instead of being on paper, it's coded directly into the blockchain where it can be enforced automatically.

What the Escrow Contract Does

1. Records the Delegation: The escrow contract stores how much USDC Bulisolio co-signed for your specific loan. This is transparent and viewable on BaseScan (the Base blockchain explorer) at any time.
2. Tracks Payment Status: It communicates with the Bulisolio API to verify whether mandatory minimum payments are being made on time. If a payment is missed, the escrow updates its state accordingly.
3. Manages the Cure Window: If a payment is missed, the escrow contract starts a cure window — a set period during which you can make the overdue payment and bring the loan back to good standing. Paying during the cure window stops any further escalation.
4. Enables Unilateral Close (Last Resort): If the cure window expires without payment, Bulisolio can call the initiateUnilateralClose() function on the escrow contract. This starts a timelock (a mandatory waiting period) before the close can execute. During the timelock, you still have one final chance to cure. If the timelock expires and no cure occurs, Bulisolio can call executeUnilateralClose() to recover its delegated capital and close the loan.

What a Timelock Means for You

A timelock is built-in protection. Even when Bulisolio initiates a unilateral close, it can't happen instantly. There is always a mandatory waiting period. This gives you time to see the notification from Concierge Voice, gather the funds, and cure the default before the close executes. The exact length of the timelock is set in the escrow contract at the time your loan is originated and shown to you on your loan terms screen.

Is the Escrow Contract Audited?

Yes — this is a hard requirement. Bulisolio's Escrow Contract must pass a professional third-party security audit before any Class 2, 3, or 4 loan is offered to users in production. No audit means no delegated loans. When the audit is complete and passed, Bulisolio will announce it via in-app notification and on bulisolio.com. Until that announcement, all delegated loan options will show as "not currently available."

Where to See Your Escrow Contract

Every delegated loan confirmation screen includes:

• The escrow contract address on Base
• A direct link to view it on BaseScan (the Base blockchain explorer)
• The current timelock duration and cure window settings

You can always ask Concierge Voice: "Hey Bulis, show me my escrow contract status" to get a plain-language explanation of where things stand.