SIGNSign
Attestation + SignPass infrastructure (Binance HODLer airdrop) · TGE Apr 28, 2025 · Ethereum
FDV vs unlock schedule
Green line = realised FDV (close × total supply, since TGE). Amber bars from x-axis = cumulative supply unlocked (right axis, 0-100%). Future price unknown — line stops at "today"; bars continue forward.
Allocation & vesting
Per-bucket share of the 10.00B fixed supply, with cliff and vesting curve.
| bucket | % of supply | tokens | TGE % | cliff | vesting |
|---|---|---|---|---|---|
| Community & Rewards ⚠ Includes 10% TGE airdrop (1B SIGN) — of which Binance HODLer Airdrop took 350M (3.5%) | 40% | 4.00B | 25% | — | 25% at TGE, remainder monthly over 12 months (rolling community rewards & future airdrops thereafter) |
| Backers | 20% | 2.00B | 0% | 12M | 12-month cliff (ends 2026-04-28), then 24-month linear monthly unlocks. First major cliff release ~401M SIGN (4.01% of total supply / ~20.8% of circulating) |
| Foundation | 20% | 2.00B | — | — | Multi-year quarterly grants aligned with protocol milestones (~4-year structured release) |
| Ecosystem | 10% | 1.00B | — | — | Quarterly developer-incentive releases tied to milestones (~4-year structured release) |
| Early Team Members | 10% | 1.00B | 0% | 12M | 12-month cliff (ends 2026-04-28), then 48-month linear monthly unlocks (total 60M to fully unlocked) |
| Liquidity | 1% | 100.0M | 100% | — | Fully unlocked at TGE — 100M SIGN for CEX/DEX market making |
Cumulative supply unlock
Per project tokenomics. Each row is a checkpoint.
Key dates
Past + upcoming events. Severity rail on the left.
- Apr 28, 2025past
TGE — token live on Binance
1.2B SIGN circulating at launch (12% of supply). Binance HODLer Airdrop distributes 350M SIGN (3.5%) to qualifying BNB holders. Liquidity bucket (100M / 1%) fully unlocked. Community TGE chunk (25% of 40% bucket = 1B SIGN).
- Apr 29, 2025past
Upbit + OKX listings — KRW pump
SIGN +60% on Upbit listing vs. slow Binance debut. OKX adds SIGN/USDT perpetual. Korean retail bid lifts initial price discovery.
- Sep 24, 2025past
All-time high — $0.1325
Price peaks at $0.1325 amid broader attestation/identity narrative + Sign Protocol whitepaper buzz. FDV ~$1.3B at the top.
- Oct 10, 2025past
All-time low — $0.01223
Capitulation low ~2 weeks after ATH. -91% from peak. Coincides with strategic round announcement ($25.5M from YZi Labs + IDG Capital) — strategic round price likely set well below market.
- Jan 28, 2026past
Mid-year community/foundation tranche (~$11.6M impact)
KuCoin flagged unlock event ≈ 17.68% of circulating supply. Likely a Community rewards / Foundation / Ecosystem milestone tranche — not a cliff expiry. Persistent monthly community vesting from 12-month tail of TGE bucket.
- Apr 28, 2026past
🔥🔥 Double cliff expiration — Backers (20%) + Team (10%) start vesting
The single biggest scheduled supply event. 12-month cliff ends for BOTH Backers (20% / 2B SIGN) AND Early Team (10% / 1B SIGN). First Backers monthly tranche ≈ 401M SIGN (~$7M at current price) = 4.01% of total supply, 20.78% of circulating supply. Team begins 48-month linear unlock starting same date.
- May 28, 2026
Second monthly Backers tranche
Continuing linear: ~83M SIGN/month from Backers bucket (2B / 24mo) + ~21M SIGN/month from Team (1B / 48mo) = ~104M SIGN of new supply each month through April 2028.
- Apr 28, 2027
End of Year 2 — ~48% circulating
Backers ~50% unlocked (12 of 24 monthly tranches). Team ~25% unlocked (12 of 48). Community 12-month vesting tail complete — pure rolling rewards thereafter. Foundation + Ecosystem continue quarterly structured releases.
- Apr 28, 2028
Backers fully vested + Year 3 mark — ~71% circulating
Backers bucket (2B SIGN) finishes 24-month linear vesting → fully unlocked. Team ~50% unlocked. Foundation/Ecosystem ~75% through 4-year curves.
- Apr 28, 2029
Year 4 mark — ~100% circulating
Team finishes 48-month linear vesting (12-month cliff + 48-month linear = 60-month total from TGE). Foundation + Ecosystem 4-year releases complete. Full 10B SIGN circulating.
Notable — Apr 28, 2026
First anniversary cliff: 30% of supply (Backers + Team) starts unlocking simultaneously
- Original tokenomics published April 2025: Backers 20% with 6-month cliff + 24-month linear (later revised); Team 10% with 12-month cliff + 48-month linear.
- Confirmed schedule at TGE: BOTH Backers and Team carry 12-month cliffs ending 2026-04-28 — synchronized, not staggered.
- Immediate result: ~401M SIGN cliff release to Backers = the largest one-day supply jump in SIGN history (+20.78% to circulating supply in a single day).
- Market context: SIGN trades at ~$0.016 in May 2026, -87% from $0.1325 ATH. Strategic round investors (Oct 2025, $25.5M at undisclosed price) face their first vesting checkpoint into a depressed market.
- No procedural drama (no last-minute revisions à la Billions Network) — but the synchronized double-cliff design itself is the structural risk Sign Protocol bakes in.
Funding history
| round | closed | raised | price |
|---|---|---|---|
| Seed (as EthSign) | Mar 9, 2022 | $12M | — |
| Series A (YZi Labs lead) | Jan 28, 2025 | $16M | — |
| Strategic (YZi Labs + IDG Capital) | Oct 1, 2025 | $26M | — |
Known data gaps
- Foundation + Ecosystem vesting curves: described in tokenomics docs as "multi-year quarterly releases aligned with milestones" but no public per-quarter token amounts. The 4-year framing is an inference from end-of-Year-4 = 100% target.
- Strategic round price (Oct 2025, $25.5M from YZi Labs + IDG Capital): not disclosed publicly. Token-to-USD ratio for this tranche is unknown.
- Per-month unlock USD calendar: Tokenomist + CryptoRank pages gate detailed per-tranche dates behind premium subscriptions. Only headline cliff events (April 28 anniversary) are public.
- Community 40% bucket: 10% is TGE airdrop, then "monthly over 12 months" but the remaining 30% (rolling rewards / future airdrops) has no fixed emission schedule — discretionary protocol payouts.
- No confirmation that SIGN participated in Binance Megadrop specifically — the 350M HODLer Airdrop on April 28, 2025 was a HODLer Airdrop (BNB holders), not the Megadrop launchpool product.
Sources
- CoinMarketCap — Sign (SIGN) live— Total supply 10B, circulating 1.93B (19.3%), ATH $0.1325 on 2025-09-24, ATL $0.01223 on 2025-10-10, contract 0x868f...A4c3 on Ethereum, FDV $163.11M
- Tokenomist — Sign unlocks— Allocation: Community 39%, Foundation 20%, Backers 20%, Team 10%, Ecosystem 10%, Liquidity 1%. Next unlock May 28 2026 to Backers. Cliff-mechanism majority.
- XT Exchange / Medium — What is SIGN— TGE April 28 2025 at 10:00 UTC, 1.2B initial circulating (12%), 350M Binance HODLer Airdrop, Backers 24mo linear + 6mo cliff (later revised to 12mo), Team 48mo linear + 12mo cliff, Community 25% TGE + 12mo monthly tail
- Bitget News — Sign tokenomics— Total 10B, 10% airdropped at TGE, 40% community / 60% backers+team+foundation+ecosystem distribution rationale
- CryptoRank — Sign vesting— Tier-1 vesting tracker reference (premium-gated detail)
- KuCoin Blog — JUP & SIGN unlock schedule 2026— Jan 28 2026 unlock event ≈ $11.61M, 17.68% of circulating supply
- CoinDesk — SIGN rises 60% on Upbit listing— Upbit listing April 29 2025, OKX SIGN/USDT perp same day, slow Binance debut → Korean retail bid
- The Block — YZi Labs leads $16M Series A in Sign— January 28 2025: $16M Series A, YZi Labs lead, Altos / HackVC / Amber participate
- Crypto Briefing — Sign $25M strategic round— October 2025: $25.5M strategic round led by YZi Labs + IDG Capital, brings cumulative raise to $55M+
- The Block — EthSign $12M seed (all 3 Sequoia units)— March 9 2022: $12M seed as EthSign — Sequoia US + India + China + Mirana + Amber + Circle + NGC + HashKey + Matrixport
- EconoTimes — SIGN April 28 2026 unlock— April 28 2026 cliff: ~401.1M SIGN to Backers ≈ $7M at unlock, 20.78% of circulating supply
- BingX Learn — What is Sign Omni-chain Protocol— Sign Protocol = omni-chain attestation + TokenTable distribution platform; SignPass; evolution of EthSign post-2024 rebrand