ICON (ICX)
Unlock Schedule
ICON (ICX) Token Unlock & Vesting Schedule
The unlock chart above provides a clear visual overview of the ICON (ICX) token release schedule, showing when and how tokens enter circulation across investor, team, treasury, and community allocations. Understanding these tokenomics dynamics is critical for evaluating potential supply pressure, inflation impact, and market liquidity over time — key factors that can influence ICX price performance.
Each color segment in the chart corresponds to a specific allocation group described in the Allocations section below. Underlying assumptions and data models used to reconstruct this schedule are explained in detail under Assumptions, while broader utility insights and token use cases are covered in Tokenomics & Utility.
Tokenomics & Utility
ICX has a clear economic model formalized by the ICON Incentives Scoring System (IISS). The most recent major upgrade, IISS 3.1, set nominal inflation at 3.99% annually and defined how newly minted ICX is distributed among stakeholders:
- Approximately 77% to stakers (voters) who delegate to validators.
- About 13% to validators (block producers).
- Around 10% to the CPS (Contribution Proposal System) fund, which pays for grants and ecosystem work.
- A future share for “Relays” is reserved for when BTP is fully live; allocations can be adjusted via governance. (icon.community)
IISS 3.1 also tightened how rewards are earned. Validators must post a bond (set at 5% of their total vote share on activation) to receive full rewards, creating “skin in the game” and enabling slashing for misbehavior once parameters are activated. Staker yields float based on the overall percentage of ICX staked. A key change links fees and inflation: network fees are burned and used to offset issuance, so heavy on‑chain and cross‑chain usage can make net inflation trend toward zero. (medium.com)
Utility-wise, ICX is used for:
- Paying transaction fees on ICON (L1 gas).
- Covering cross‑chain messaging fees through ICON’s GMP (xCall) and integrated protocols.
- Staking and governance, by delegating to validators and voting on network proposals.
- As a base asset in ecosystem apps like decentralized exchanges and stablecoin systems. (icon.foundation)
Assumptions
- Supply is uncapped; ongoing issuance under IISS continues indefinitely.
ICON’s monetary policy mints ICX monthly via IISS and has no hard maximum supply; we model known fixed schedules and set total_supply to null.
- PoS rewards before IISS 3.1 are modeled as an aggregate linear estimate.
ICON governance notes that pre-3.1 issuance was variable and not deterministic month-to-month; we estimate total issuance for 2019-10-29 to 2021-11-30 by inference from current total supply and documented 3M/month post-3.1 setting.
- Fee burns may reduce net issuance below the modeled gross 3,000,000 ICX/month after 2021-12.
Under Fee 3.0 and IISS 3.1, transaction fees are used to fund rewards; if fees equal 3M ICX/month, net inflation can be 0 for that month. We model gross issuance for consistency.
- Reserve-funded incentives are modeled to exhaust only the on-chain reserve balance over 5 years.
ICON committed up to 200M ICX for interoperability incentives primarily from the ICX reserve; to avoid double counting beyond known reserve, we model linear distribution of the 128,073,500 ICX reserve across 5 years starting 2022-01-14.
- Team vesting schedule is approximated as 4-year linear from mainnet genesis.
No official detailed vesting schedule has been published; Foundation reported ~9.995M ICX distributed to team by 2019-07-12. We model a standard multi-year vest for monthly granularity.
- Foundation treasury spending is discretionary; modeled as far-future cliff except for the documented 3,000,000 ICX pre-vote giveaway.
Foundation’s 14% allocation had no published vest; to avoid overstating circulating unlocks, we schedule a placeholder cliff in 2100-01-01 and model the known giveaway as a short linear release.
- 1. https://www.icon.foundation/blog/2018/icon-mainnet-1-0-launched-d54b9132017e
- 2. https://www.icon.foundation/blog/2017/token-unlock-and-exchange-listing-schedule-cc02068569d
- 3. https://www.icon.foundation/blog/2019/update-to-circulating-supply-calculation-a50518a87847
- 4. https://www.icon.foundation/blog/2017/icon-token-sale-allocation-ce2464739554
- 5. https://docs.icon.community/operate-icon/economics/rewards-and-penalties
- 6. https://icon.community/learn/icon-icx-tokenomics-a6d269c8908/
- 7. https://www.icon.foundation/blog/2022/icon-development-roadmap-update-december-2021-952fb051734d
- 8. https://www.icon.foundation/blog/2022/icon-commits-200m-to-cryptos-first-ever-interoperability-incentive-fund-155550671fd
- 9. https://www.icon.foundation/blog/2019/official-icx-listing-on-kraken-cryptocurrency-exchange-38ad395cea70
- 10. https://coinmarketcap.com/currencies/icon/
- 11. https://www.coingecko.com/en/coins/icon/usd
- 12. https://forum.icon.community/t/iiss-3-1-structure/1309