CoinYQ Dossier

One coin became a thousand units, then a mining experiment became an exchange constitution

SUN's most important price chart break was mechanical: the 2021 token split multiplied units and changed the contract. What followed joined stablecoin pools, JustSwap and governance, but each benefit still needs a lock, a liquidity position or an executed burn.

May 26 drew a contract line through SUN's history

The 2020 mining token lives at TKkeiboTkxXKJpbmVFbv4a8ov5rAfRDMf9 and is now SUNOLD. The successor at TSSMHYeV2uE9qYH95DqyoCuNCzEL1NvU3S opened on May 26, 2021 as a one-way 1:1000 swap. Comparing prices across that date without scaling units invents a crash or windfall that the plan did not create.

Published supply changed from 19,900,730 to 19,900,730,000 while market capitalization was held constant. The platform paired that accounting break with a 3pool for USDT, USDJ and TUSD, then acquired JustSwap in October 2021 and renamed the broader DEX SunSwap.

The allocation account is also unusual: project documents claim no premine, team reserve or private placement, while assigning 47.16% to SUN DAO Governance under four-year linear unlocking. That is a treasury and release path to inspect, not proof that every holder controls it.

Four AMM generations now share one router

V2 uses a constant-product pool; V3 moved liquidity into chosen price ranges; V4 launched March 2, 2026 with a singleton, flash accounting and hooks. SunCurve uses a StableSwap curve for like-priced assets, and PSM follows reserve-backed 1:1 rules. Routing them through one interface does not make their fee, oracle or collateral risks identical.

Liquidity providers own claims represented by LP tokens or position NFTs and earn only while their capital satisfies pool rules. V4 hooks can alter fee or execution behavior for a specific pool, so users must inspect the hook as well as the router.

veSUN turns time into votes, boosts and one narrow fee stream

A 26-week to four-year SUN lock creates veSUN proportional to remaining time; four years begins at one veSUN per SUN, then decays. veSUN votes on pool mining weights, can raise mining weight to 2.5x, and shares 50% of stablecoin-pool fees in TUSD using weekly snapshots.

SUN DAO adds thresholds: more than 30 million veSUN to propose, more than 90 million for and more for than against, then a two-day lock before pending execution. Liquid SUN that was never locked cannot exercise those votes or collect that fee stream.

The burn address is final; the route to it is operated

SUN.io now lists distinct buyback inputs: V2 contributes 0.05% of each swap, the V3 TRX/USDT 0.05% fee-tier pool contributes one-sixth of its accumulated fees from May 2, 2026, SunPump contributes 100% of platform protocol revenue, and SunX contributes 50% of net revenue after operating costs such as trade mining. Operators periodically swap these assets into SUN, stage them at a pending address, and burn quarterly. Governance contracts, deployed factories and routers, and V4 hook authors each hold different powers; the reviewed documents do not identify every current key holder, so 'DAO controlled' cannot substitute for live owner and upgrade checks.

How the project changed

  1. 2020-09
    SUNOLD begins as mining distribution

    TRX staking started the first token's contract history.

  2. 2021-05-26
    The 1:1000 conversion opens

    SUNOLD and current SUN become different contracts and units.

  3. 2021-10
    SUN.io acquires JustSwap

    Stablecoin mining and the general AMM brand join as SunSwap.

  4. 2022-03-24
    Buyback and burn begins

    Product revenue starts a staged route toward the black-hole address.

  5. 2024-07-31
    SUN DAO launches

    Formal proposal and veSUN voting thresholds go live.

  6. 2026-03-02
    SunSwap V4 launches

    A singleton pool manager, flash accounting and programmable hooks expand the control surface.

Evidence and primary sources

Last evidence review: 2026-09-04

What is Sun Token?

SUN is the TRC-20 governance and incentive token used around SUN.io, whose current contract is TSSMHYeV2uE9qYH95DqyoCuNCzEL1NvU3S. It is not the 2020 token now called SUNOLD. From May 26, 2021, the old contract converted one way at 1 SUNOLD to 1,000 current SUN.

SUN.io is a family of trading systems rather than one pool. Universal routing can reach constant-product SunSwap V2, concentrated-liquidity V3 and V4, SunCurve StableSwap pools and the reserve-based PSM. Holding SUN alone supplies no LP position, stablecoin reserve claim, veSUN vote or protocol ownership.

What problem does Sun Token solve?

The redenomination lowered the unit price without creating economic value by arithmetic: published supply moved from 19,900,730 to 19,900,730,000 while market capitalization was held constant at conversion. It also separated the legacy mining token from a new governance identity tied to stablecoin swaps and later SunSwap.

SUN distribution documentation says there was no premine, team reserve, cornerstone investment or private placement, but it allocated 47.16% to SUN DAO Governance under a four-year linear unlock. Meanwhile product revenue follows different rules. Some SunSwap, SunPump and SunX revenue buys SUN into a pending-burn address and quarterly sends it to TRON's black-hole address. That reduces supply; it is not cash paid to every holder.

How does Sun Token work?

V2 pools price two assets with x*y=k. V3 and V4 concentrate liquidity by range; V4 adds a singleton, flash accounting and optional hooks. SunCurve uses a StableSwap invariant near a peg, while PSM swaps supported reserves at 1:1. LP rights come from deposited assets or position NFTs, not SUN balances.

Locking SUN for 26 weeks to four years produces time-decaying veSUN. Four years yields 1:1 veSUN initially; holders vote on pool weights, can boost mining up to 2.5x and receive 50% of documented stablecoin-pool fees in TUSD through weekly snapshots. Those benefits expire with voting power and depend on the relevant contracts and pools.

SUN DAO requires over 30 million veSUN to create a proposal and over 90 million affirmative votes, with for exceeding against; a passed proposal enters a two-day lock and then awaits execution. That is meaningful onchain control, but current executor, factory owner, router upgrade and fee-controller addresses still need transaction-level verification. V4 hooks also let pool creators attach third-party code, so a pool can carry controls beyond the base AMM.

Key facts

  • Current SUN contract: TSSMHYeV2uE9qYH95DqyoCuNCzEL1NvU3S; SUNOLD: TKkeiboTkxXKJpbmVFbv4a8ov5rAfRDMf9.
  • The May 2021 split exchanged 1 SUNOLD for 1,000 SUN and scaled stated supply to 19,900,730,000.
  • SunSwap V2 uses constant product; V3/V4 use concentrated liquidity; SunCurve targets stablecoin swaps.
  • veSUN locks range from 26 weeks to four years and voting power decays with remaining time.
  • Documented veSUN benefits include pool-weight votes, up to 2.5x mining boost and 50% of stablecoin-pool fees.
  • A proposal needs more than 30 million veSUN to initiate and more than 90 million affirmative votes to pass.
  • Buyback ratios differ across V2, V3, SunPump and SunX; accumulated SUN is burned quarterly.
  • V4 launched March 2, 2026 with hooks and a singleton pool manager.

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Frequently asked questions

Is SUNOLD the same contract as SUN?

No. SUNOLD is the legacy token at TKke…DMf9. The current SUN contract is TSSM…U3S and the official path converted old to new one way at 1:1000.

Are all SUN.io pools the same AMM?

No. V2 is constant product, V3/V4 concentrate liquidity, SunCurve is optimized around stable pegs, and PSM is a reserve-based 1:1 route.

Does holding liquid SUN earn the 50% stablecoin fee share?

No. The documented fee share requires locking SUN into veSUN and follows weekly snapshots; voting power and eligibility decay toward unlock.

Does a buyback send money to SUN holders?

No. Product revenue is swapped into SUN and later burned at the black-hole address. Any price effect is uncertain and is not a contractual cash distribution.

Does SUN confer ownership of pool reserves or SUN.io?

No. Pool claims belong to LP positions, veSUN rights require a lock, and no reviewed document makes liquid SUN an equity or general redemption claim.

External trackers

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