Crypto Newbie / Simulators / DPoS
Delegated Proof-of-Stake Simulator
Tron, Cosmos Hub, Polygon, EOS, Tezos and dozens of chains use Delegated PoS. The mechanics are subtle: only the top-N validators by total voting power become block producers; everyone else earns zero. Delegators choose a validator, validator takes a commission cut (5-20%), the rest is distributed pro-rata to delegators. This simulator shows what happens to APR when your validator is near the cutoff vs deep in the active set.
Network config
Validators
| Validator | Self stake | Commission % | Uptime | Voting power |
|---|---|---|---|---|
| Validator A (large) ● | 1.50M | |||
| Validator B ● | 250.0k | |||
| Validator C ● | 105.0k | |||
| Validator D (small) ● | 31.0k | |||
| Validator E (below cut) ○ | 5.0k |
Delegators
| Delegator | Stake | Delegated to | Annual reward | Effective APR |
|---|---|---|---|---|
| Whale | 141.1k | 14.11% | ||
| Mid holder | 22.1k | 44.10% | ||
| Small holder | 9.4k | 187.40% | ||
| Retail | 2.9k | 291.55% |
Validators below top-N earn ZERO rewards — only the active set produces blocks.
Validator rewards (annual)
| Validator | % of active stake | Gross | Validator net (commission) | Active |
|---|---|---|---|---|
| Validator A (large) | 79.5% | 148.5k | 7.4k | Active |
| Validator B | 13.3% | 24.5k | 2.5k | Active |
| Validator C | 5.6% | 10.2k | 815 | Active |
| Validator D (small) | 1.6% | 3.1k | 153 | Active |
| Validator E (below cut) | — | 0 | 0 | Inactive |
Concentration
79.5%
⚠ Top validator > 33% — governance risk.
The top-N cutoff — the most important DPoS rule
Cosmos Hub's active set is 180 validators. Tron is 27. EOS is 21. Validators ranked 181 / 28 / 22 on Cosmos / Tron / EOS earn ZERO rewards — they spend money running infrastructure for nothing. This cutoff creates a fierce competition for delegators: validators below the cut beg for delegations to push them above the line. Delegators chasing safety often park their stake with the top-3 validators, concentrating power further.
Commission — the validator's business model
When a validator earns 100 tokens of reward, they take their commission (e.g., 10%) and distribute the remaining 90 to delegators. Validators compete by lowering commission — Lido takes ~10%, many Cosmos validators run 5% or even 0% as a marketing move. Lower commission = better delegator APR, but also less revenue for the validator to fund operations + redundancy. Picking a validator at 0% commission is often a sign of subsidisation (someone's funding them to attract delegations), not sustainable economics.
Why DPoS centralises faster than pure PoS
In pure PoS (Ethereum), 1M validators each running a node = 1M decentralisation units. In DPoS, even with millions of delegators, only the top-N validators are actually running consensus. Cosmos Hub has ~180 validator entities securing $1B+ TVL — far fewer than Ethereum's 1M+ validators securing similar value. Trade-off: DPoS scales socially (governance is easier with 180 known parties than 1M anonymous), but the active set is a much smaller attack surface.
Slashing on DPoS — delegators lose with their validator
If your chosen validator gets slashed (double-signing, prolonged downtime), YOUR delegation gets slashed pro-rata too. Cosmos slashes 5% for double-sign, 1% for extended downtime. This means picking a validator is a real risk decision — high-reputation operators charge slightly higher commission but their slashing rate is near-zero, while no-name operators offer 0% commission and routinely get jailed.
Frequently asked questions
+What's the difference between Ethereum PoS and Cosmos DPoS?
Ethereum PoS: ~1M validators, each with exactly 32 ETH effective stake, no delegation (you run your own validator). Cosmos DPoS: ~180 active validators, variable stake per validator (driven by delegations), explicit delegate-and-receive-yield primitive. Ethereum is more decentralised but harder to participate in. Cosmos is more accessible but more centralised.
+Can I move my delegation to a different validator?
Yes, but there's a 'unbonding' period (Cosmos: 21 days) during which your stake is locked, earns no rewards, AND can still be slashed for the original validator's misbehavior. This delay is what makes DPoS secure — attackers can't quickly extract their stake before being penalised. Plan unbondings carefully; you can't react fast.
+Why do whales delegate to specific validators?
Three reasons: (1) Custody continuity — large staking services (Coinbase, Binance) auto-delegate to specific validators they have relationships with. (2) MEV revenue share — top validators on Cosmos chains negotiate private deals returning some MEV-extracted value to large delegators. (3) Governance influence — voting power follows delegation, so whales delegate to validators whose governance positions align with theirs.
+What's the right commission rate to pick?
5-10% is the sweet spot. Below 5% is typically unsustainable (subsidised by marketing budgets that will end) or low-quality (cheap = no redundancy). Above 15% is usually only worth it for top-tier operators with strong MEV pipelines that recapture more value for delegators. Mid-tier 8-12% with multi-year track record is the boring-but-correct pick.
+Why does the simulator show some validators with 0 reward despite high self-stake?
They're below the top-N cutoff. In DPoS, only the active set earns. A validator with 1M self-stake but ranked 5th out of top-4 earns zero. This is what creates the relentless lobbying for delegations in DPoS ecosystems — without delegations to push you above the cutoff, your infrastructure spending is wasted.