A coin that moves with the planet's temperature.

Sun Codex ties its supply to the global temperature anomaly: it burns tokens when the planet warms, and regenerates them when it cools. Four independent data sources, aggregated on-chain, keep the contract anchored to a single real-world number.

REFERENCE ANOMALY +1.60°C

GENESIS → COLLAPSE THRESHOLD

0,00°C+5,00°C

Temperature Whitepaper Smart contract

01 — Supply

A fixed supply, burned before it even starts

Total supply minted at Genesis: 3,000,000,000 tokens Initial split: 80% liquidity pool · 20% holders

80%Liquidity pool

10%Community

5%Founders

5%Sponsor

Liquidity pool 2,400,000,000 80% of total supply

Community & airdrop 300,000,000 10% of total supply

Founders 150,000,000 5% of total supply

Sponsor 150,000,000 5% of total supply

CURRENT STATE

At today's real temperature, +1.60°C, about 16% of each bucket has already been burned: the liquidity pool stands at 2,016,000,000 / 2,400,000,000 tokens, and the holders' share (community + founders + sponsor) stands at 504,000,000 / 600,000,000 tokens. The interactive module in the next section shows how these numbers move across the whole scale, from 0°C to +5.00°C.

02 — Mechanism

The contract breathes with the climate

The scale runs from the Genesis block, set at 0°C of anomaly relative to the pre-industrial era, up to the irreversible threshold of +5.00°C: past that point the contract freezes forever, permanently. Move the cursor (or your finger, on mobile) in the module below to see the pool and holders move across the whole scale.

BURN

Hits the liquidity pool

When the anomaly rises above today's level, the contract burns tokens directly from the liquidity pool. The rate isn't constant: it accelerates as it approaches +5.00°C.

MINT

Goes to holders, not the pool

If the temperature drops below today's level, the contract puts tokens back into circulation proportionally among holders (community, founders, sponsor) — the liquidity pool stays frozen at its burn level.

FREEZE

An irreversible collapse

At +5.00°C the contract freezes permanently: no burn, no mint, no climate transaction will ever be able to change the supply again.

03 — Oracles

Five independent sources, one on-chain number

The five spheres orbiting the planet up top represent the datasets aggregated by the oracle service to compute the temperature anomaly used by the contract — at least 3 of the 5 sources need to respond to still compute the median.

HC5

HadCRUT5

Met Office Hadley Centre / UEA CRU

Historical reference series for the global temperature anomaly, among the most cited in the scientific literature.

NOAA

NOAAGlobalTemp

National Oceanic and Atmospheric Administration

Combined ocean-land dataset from the National Oceanic and Atmospheric Administration.

GIS

GISTEMP

NASA Goddard Institute for Space Studies

Historical series of global surface temperature anomalies.

ERA5

ECMWF / Copernicus Climate Change Service

High-resolution European climate reanalysis.

JRA

JRA-3Q

Japan Meteorological Agency

Japanese climate reanalysis, the fifth source added for extra redundancy.

Oracle runtime: Witnet (Radon script + in-house bridge server) Data hub: Met Office Climate Dashboard Update: automatic, monthly via a dedicated cron job Launch chain: Arbitrum Cross-chain expansion: under evaluation

04 — Fee

A fee separate from the climate mechanism

Every transaction pays a 2% fee, independent of the temperature-linked burn and mint.

Transaction fee

Applied to every transfer of the token.

Liquidity pool

Automatically added to the pool. The LP tokens generated are burned to a dead address: the liquidity can never be withdrawn.

Environmental partners

Split among the project's non-profit partner organizations.

05 — Anti-whale

Limits designed to avoid a cliff effect

The thresholds only apply to purchases made directly from the liquidity pools: sales and wallet-to-wallet transfers are never limited. Instead of jumping from strict rules to total freedom in one go on a fixed date — a predictable, exploitable cliff — the limits ease gradually, in a single step decided at deploy time.

INITIAL PHASE — first 2 months after launch

Max per transaction 0.5%15,000,000 tokens

Max per wallet 1%30,000,000 tokens

Cooldown between purchases 5 min

PERMANENT PHASE — from month three, forever

Max per transaction 1%30,000,000 tokens

Max per wallet 3%90,000,000 tokens

Cooldown between purchases none

A piece of climate for everyone

These rules exist to protect people, not to restrict them. Selling, receiving, or sending tokens is always free: the thresholds only apply to those buying from the pool. The goal is simple — we don't want Sun Codex to end up concentrated in a few whale-risk wallets, but for as many people as possible to hold their own piece of climate, small or large.

06 — Governance

Immutable by choice, not by technical limit

After deployment, almost no parameter can ever be changed by anyone.

Immutable parameters Total supply, burn and mint formulas, +5.00°C collapse threshold, partner NGO wallets, and fee structure: fixed forever from the moment of deployment.

Only exception The oracle adapter address can only be updated via a 3-of-5 multisig with a 7-day time-lock, to allow migrating the oracle infrastructure without ever being able to touch supply or mechanism.

Chain Canonical contract on Arbitrum, with possible future cross-chain extension via dedicated bridges.

Security hardening ReentrancyGuard on all sensitive functions, slippage protection on liquidity and swaps, and temperature updates restricted to the cron job's dedicated wallet only — low-permission and separate from the multisig — no other address can force it, not even with a flash loan.

07 — Partners

The fee share going to those working on the ground

The project is in talks with non-profit organizations to receive the environmental share of the transaction fee.

Rainforest Foundation

In talks

Protection of tropical forests and the rights of the communities living in them.

Save the Children

In talks

Child protection, including in contexts most exposed to the effects of climate change.

Bithope

In talks

Crypto-based non-profit fundraising.