Pars Protocol

Bonds Overview

Financial mechanism allowing the protocol to acquire treasury assets in exchange for PARS at a discount.

Bonds Overview (اوراق قرضه)

Bonds (اوراق قرضه - Oraghe Gharzeh) are a financial mechanism that allows the protocol to acquire treasury assets in exchange for PARS at a discount. Bonds serve as the primary method for growing protocol reserves and managing PARS supply.

What Are Bonds?

Bonds are a market-driven exchange mechanism:

  • Users provide assets (stablecoins, ETH, LP tokens)
  • Protocol provides PARS at a discount to market price
  • Transaction settles over a vesting period

Unlike lending, bonds are purchases—not loans that require repayment.

Why Bonds?

For the Protocol

BenefitDescription
Treasury GrowthAccumulates reserves without external funding
Supply ManagementControls PARS supply based on demand
Liquidity AcquisitionAcquires permanent protocol-owned liquidity
Price StabilityProvides counter-cyclical supply mechanisms

For Users

BenefitDescription
Discounted PARSAcquire PARS below market price
Treasury ParticipationContribute to protocol health
Predictable TermsKnown discount and vesting schedule

Bond Types

Reserve Bonds (اوراق ذخیره)

Reserve Bonds accept reserve assets in exchange for PARS:

┌─────────────────────────────────────────────────────────────────┐
│                    RESERVE BOND FLOW                             │
├─────────────────────────────────────────────────────────────────┤
│                                                                  │
│   Bonder                  Protocol                  Treasury     │
│     │                        │                          │        │
│     │  1. Provide USDC       │                          │        │
│     │ ──────────────────────►│                          │        │
│     │                        │  2. Deposit to Treasury  │        │
│     │                        │ ────────────────────────►│        │
│     │                        │                          │        │
│     │  3. PARS (discounted)  │                          │        │
│     │     vests over time    │                          │        │
│     │ ◄──────────────────────│                          │        │
│     │                        │                          │        │
│                                                                  │
└─────────────────────────────────────────────────────────────────┘

Accepted assets: USDC, DAI, FRAX, ETH

Purpose: Accumulate treasury reserves


Inverse Bonds (اوراق معکوس)

Inverse Bonds provide reserve assets in exchange for PARS:

┌─────────────────────────────────────────────────────────────────┐
│                    INVERSE BOND FLOW                             │
├─────────────────────────────────────────────────────────────────┤
│                                                                  │
│   Bonder                  Protocol                  Treasury     │
│     │                        │                          │        │
│     │  1. Provide PARS       │                          │        │
│     │ ──────────────────────►│                          │        │
│     │                        │  2. Burn PARS            │        │
│     │                        │  (reduces supply)        │        │
│     │                        │                          │        │
│     │  3. USDC (instant)     │  4. Withdraw reserves    │        │
│     │ ◄──────────────────────│◄─────────────────────────│        │
│     │                        │                          │        │
│                                                                  │
└─────────────────────────────────────────────────────────────────┘

Output assets: USDC, DAI (stablecoins)

Purpose: Absorb sell pressure, stabilize price below range

Note: Inverse bonds vest instantly (no waiting period)


Liquidity Bonds (اوراق نقدینگی)

Liquidity Bonds accept LP tokens in exchange for PARS:

Accepted assets: PARS/ETH LP, PARS/USDC LP

Purpose: Acquire protocol-owned liquidity


PARS Bonds (اوراق پارس)

PARS Bonds exchange PARS for PARS with time-locking:

Purpose: Transition from liquid staking to time-locked staking

Use case: Users lock PARS for discounted future PARS

Bond Pricing

Sequential Dutch Auction (SDA)

Bonds use a modified dutch auction mechanism:

┌─────────────────────────────────────────────────────────────────┐
│                    SDA PRICING                                   │
├─────────────────────────────────────────────────────────────────┤
│                                                                  │
│  Discount                                                       │
│    ▲                                                            │
│    │      ╱╲                                                    │
│    │     ╱  ╲       ╱╲                                          │
│    │    ╱    ╲     ╱  ╲                                         │
│    │   ╱      ╲   ╱    ╲                                        │
│    │  ╱        ╲ ╱      ╲                                       │
│  0 │ ╱──────────╳────────╲──────────────────────────► Time      │
│    │                                                            │
│    │  Purchase   Recovery   Purchase   Recovery                 │
│    │                                                            │
│                                                                  │
│  Discount increases over time until purchase                    │
│  Each purchase resets the price; discount then grows again      │
│                                                                  │
└─────────────────────────────────────────────────────────────────┘

Key Properties

PropertyDescription
No oracle dependencyPrice set by market demand
Self-regulatingSupply sold evenly over bond term
Market-drivenDiscount reflects actual demand

Discount Calculation

discount = (market_price - bond_price) / market_price × 100%
  • Positive discount: Bond offers PARS below market
  • Negative discount: Bond offers PARS above market (no purchase)

Vesting

Most bonds vest over time to prevent immediate selling:

Bond TypeVesting Period
Reserve Bonds5 days
Liquidity Bonds5 days
PARS BondsVariable (user-selected)
Inverse BondsInstant

Claiming

Vested PARS can be claimed at any time:

  • Partial claims allowed
  • No penalty for early partial claim
  • Fully vested after vesting period

Bond Markets

Active Markets

The protocol maintains multiple active bond markets:

MarketAssetStatus
USDC ReserveUSDCActive
DAI ReserveDAIActive
ETH ReserveETHActive
PARS/ETH LPLP TokenActive

Market Parameters

Each market has governance-controlled parameters:

ParameterDescription
CapacityMaximum PARS available for bonding
VestingTime until bond fully vests
Control variablePrice adjustment speed
Min/Max pricePrice boundaries

Range-Bound Stability Integration

Bonds integrate with Range-Bound Stability (RBS):

Above Upper Cushion

Reserve Bonds activate:

  • Sell PARS at premium
  • Accumulate reserves
  • Reduce PARS supply pressure

Below Lower Cushion

Inverse Bonds activate:

  • Buy PARS with reserves
  • Burn purchased PARS
  • Support price

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