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Mechanism Memo

PBX Protocol Documentation

Technical reference for the air quality market. Covers system architecture, the rebalancing signal, fee mechanics, and economic projections.

What is PBX?

PBX is the first financial instrument where investing in air quality and positioning for outsized upside are structurally the same action. Each listed region — Toronto, New York, Chicago at launch — has its own token trading against USDC in an AMM pool. A protocol-controlled rebalancing agent monitors real-time PM2.5 data and trades to enforce a single rule: each region's price should reflect its air quality relative to the others.

Cleaner air → price rises. Dirtier air → price falls.

Every trade generates fees that split three ways: one-third funds air quality improvement, one-third executes programmatic buyback-and-burn, and one-third funds protocol operations. The speculation is the impact mechanism.

Why Air Quality?

PM2.5 concentrations swing 300–400% daily across multiple regions driven by rush hours, weather fronts, and seasonal shifts. That volatility, continuously priced on-chain for the first time, is what generates the trading volume that powers the mechanism.

$142M

environmental prediction market volume within weeks of launch

$10M+

annual consumer sensor spending

70,000+

PurpleAir sensors paid for out of pocket

Multi-billion

weather derivative market volume annually

The demand to trade on environmental data is not theoretical.

System Components

Regional Tokens

One token per region (TOR, NYC, CHI at launch), each trading in a constant-product AMM pool against USDC.

PM2.5 Air Quality Input

Real-time data feed from PurpleAir sensor network, aggregated across 50+ sensors per region with outlier filtering.

The Rebalancing Agent

Protocol-controlled trading system that monitors the price-to-air-quality ratio across all regions and executes swaps to keep them aligned.

Fee Layer

Every trade incurs 60 bps, split equally: Air Fund (20 bps), Buyback & Burn (20 bps), Treasury (20 bps).

Harvesters

Decentralized execution layer: Air Quality Harvester (pulls PM2.5), Agent Harvester (triggers rebalancing), Fee Harvester (distributes fees).

The Rebalancing Signal

For each region i, the protocol defines two values: Pi (token price) and PM2.5i (concentration). The efficiency score is computed as:

effi = PM2.5i−0.5 / Pi

The goal is to keep efficiency scores aligned across all regions. When a region's efficiency is high — meaning it is underpriced for its air quality — the Agent buys it. When efficiency is low (overpriced), the Agent sells.

Sensitivity and Square-Root Dampening

The exponent −0.5 (square root) was chosen deliberately. It produces graduated responses without over-reacting to extremes:

  • ~50% response for routine 4× daily swings
  • ~42% dampening for noise in the clean band (5–15 µg/m³)
  • ~68% weight drop for extreme events (10→100+ µg/m³)

Air Quality Data

PBX uses PM2.5 concentration directly — not the EPA's composite AQI. Raw concentration gives continuous, granular signal; the composite AQI bins readings into a coarser index that loses information at the margins.

Data sourcePurpleAir
Sensor network70,000+ sensors
Region activation50+ active sensors
Update cadence≤ 5-minute intervals

Numeric Walkthrough

Two tables illustrate how the rebalancing mechanism works in practice — from a symmetric baseline to a single-region air quality improvement.

Initial State — All Regions Equal

RegionPM2.5 (µg/m³)PriceEfficiency Score
Toronto (TOR)10$1.000.316
New York (NYC)10$1.000.316
Chicago (CHI)10$1.000.316

Scenario A — Toronto PM2.5 Drops

Toronto PM2.5 drops from 10 to 8 µg/m³. The Agent detects that Toronto is now underpriced relative to its improved air quality and buys TOR until efficiency scores re-align.

RegionPM2.5 (µg/m³)Equilibrium PriceChange
Toronto (TOR)8$1.118+11.8%
New York (NYC)10$1.000
Chicago (CHI)10$1.000

A 20% improvement in PM2.5 translates to an 11.8% price appreciation — the square-root dampening moderates the response proportionally.

Stress Testing

The most demanding scenario is a correlated smoke event where all three regions spike simultaneously — but by different amounts. Under linear formula, relative spread would be ~20%. Under square-root dampening, spread compresses to ~9%.

Correlated Smoke Event

RegionPM2.5 SpikeLinear SpreadSqrt Spread
Toronto (TOR)30 µg/m³−18%−10%
New York (NYC)50 µg/m³−30%−16%
Chicago (CHI)20 µg/m³−12%−7%
Max spread~20%~9%

The dampening prevents correlated macro events from producing outsized price divergences that would distort the relative signal across regions.

Price Dynamics

PBX enforces relative efficiency balance. It does not cap absolute price level. If net inflows raise all prices while PM2.5 is stable, all prices rise together — the mechanism only acts when the ratio across regions diverges.

Agent acts iff |eff_i - eff_j| > threshold for any i ≠ j

This means early liquidity providers benefit from both macro-level adoption growth (all prices up) and local air quality improvement (relative price up). The two return sources are structurally independent.

The Three Streams

20 bps

Air Fund

Measurement expansion, exposure reduction, and mitigation initiatives. The feedback loop: more trading → more fees → more funding → better measurement → stronger narrative → more trading.

Buyback & Burn (20 bps)

Programmatic token purchases biased toward regions with better air quality, permanently burning supply. Creates a deflationary pressure tied directly to environmental performance.

Treasury (20 bps)

Protocol operations, infrastructure, growth, and long-term sustainability. Enables the team to expand to new regions and improve the rebalancing system over time.

Progressive Reduction

Fees compress as protocol market cap grows. This creates a competitive schedule that attracts high-volume traders at scale while maintaining impact funding at every tier.

Volume TierTotal FeeAir FundBuybackTreasury
Launch60 bp202020
$250M circ cap52 bp181816
$1B38 bp141410
$10B20 bp884
$100B+10 bp442

Why PBX Wins

vs Prediction Markets

Prediction markets expire, forcing capital to exit and re-enter. PBX is continuous — no expiration, no forced unwinding. Capital that enters for one air quality event stays and compounds across the next one.

vs Weather Derivatives

Weather derivative markets require institutional access, ISDA agreements, and minimum contract sizes in the millions. PBX is accessible to anyone with a wallet, and every dollar of volume contributes directly to the Air Fund.

vs Doing Nothing

Traditional environmental charity: capital is consumed. PBX: capital circulates. The same dollar that funds air quality improvement is the same dollar generating returns for the trader who put it in.

Two Audiences

PBX has two distinct user groups with different motivations — and both are essential to the flywheel.

Utility Adopters

Buy and hold for impact. They set the price floor and provide the baseline liquidity that keeps the AMM stable.

Speculators

Trade for volatility and arbitrage. They bring the volume that funds the Air Fund, drives buyback-and-burn, and tightens price discovery.

The reinforcement loop: utility adopters raise the floor → higher floor means larger price swings on the same PM2.5 move → larger swings attract more speculators → more volume → more Air Fund contributions → better air quality → stronger narrative → more utility adopters.

Capital Efficiency

Constant-product AMMs produce non-linear price appreciation relative to net inflow. The table below shows token price and growth multiples at various net inflow levels, starting from a $0.005 seed price.

Net InflowToken PriceGrowth from $0.005
$100K$0.0714×
$500K$0.4488×
$1M$1.17234×
$5M$12.752,549×

These are AMM mechanics, not projections. The relationship is deterministic: in a constant-product pool, price is a function of the ratio of reserves.

Fee Projections

Month-24 annual fee projections across three turnover scenarios. Turnover is defined as daily trading volume as a percentage of total market cap.

ScenarioDaily TurnoverAnnual FeesAir Fund / yr
Conservative1.5%$16.8M$6.1M
Base case8%$89.4M$32.5M
Beta observed38%$424.8M$154.5M

The beta observed figure is anchored to actual turnover rates observed in comparable early-stage environmental and prediction market tokens. It is not a best-case assumption.

Investment Thesis

PBX rests on three beliefs — each independently validated by existing market data.

People care enough about air quality to spend money on it.

$142M in environmental prediction market volume within weeks of launch. 70,000+ PurpleAir sensors paid for out of pocket. The willingness to pay for air quality signal is demonstrated, not assumed.

A well-designed mechanism converts demand into sustained volume.

300–400% daily PM2.5 swings produce continuous rebalancing events. 38% beta-observed daily turnover in comparable protocols. The volatility that powers the signal is structural — it is not manufactured.

Modest early adoption creates meaningful scale.

$5M net inflow to the AMM pools drives token prices to ~$12.75, producing a ~$3.82B FDV across three regions at launch. The mechanism amplifies small early positions into large protocol-level numbers.

Legal Disclaimer

This document is provided for informational purposes only and does not constitute an offer to sell or a solicitation to buy any security, token, or financial instrument. All projections, simulations, and scenarios presented herein are hypothetical and are provided for illustrative purposes only. Past performance of comparable instruments is not indicative of future results. Participation in digital asset markets involves substantial risk, including the possible loss of principal. This document does not constitute investment advice. Readers should conduct their own due diligence and consult with qualified professional advisors before making any investment decision. PBX tokens have not been registered under any securities law and are not being offered or sold in any jurisdiction where such offering or sale would be prohibited.