# [COSD] Centre for Open Systems Deployment: fees, stake and returns

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- **Pool id:** pool1e98xlcgj80c3rdmm27v5hnvrdtut52e65uk0ema7ctfag596vr2
- **Status:** registered
- **Homepage:** https://cosd.com/pool
- **Margin:** 1%
- **Fixed cost:** 340 ADA per epoch
- **Pledge:** 300,000 ADA declared, 314,583 ADA live (met)
- **Live stake:** 13,075,314 ADA
- **Active stake:** 13,262,095 ADA (0.0624% of the network)
- **Saturation:** 16.6% (saturation point 77,863,593 ADA)
- **Delegators:** 153
- **Blocks:** 6 in epoch 661 (expected so far 5.19), 7,224 lifetime
- **Estimated yearly return:** 1.93% (theoretical, at 100% luck)
- **Luck, recent epochs:** 102.4% of the expected blocks over 6 finished epochs (approximate: stake figure without unwithdrawn rewards)
- **Yearly return of delegators, recent epochs:** 1.97% over 6 finished epochs (not compounded)
- **Votes through DRep:** drep1ytf9f78k7rkwk4cu6l2nvna22keu9yus4kqzc0hqspd36uszu0xc2
- **Relays:** 2

## Last finished epochs (6 on record, from epoch 655)
| Epoch | Blocks minted | Blocks expected | Luck | Return (yearly) | Active stake (ADA) |
| --- | --- | --- | --- | --- | --- |
| 660 | 16 | 13.9 | 115% | 2.25% | ≈ 12,981,984 ADA |
| 659 | 21 | 13.9 | 151.3% | 2.98% | ≈ 12,975,795 ADA |
| 658 | 9 | 13.9 | 64.8% | 1.17% | ≈ 12,969,670 ADA |
| 657 | 15 | 14.1 | 106.4% | 2.05% | ≈ 13,182,564 ADA |
| 656 | 12 | 14.1 | 85.1% | 1.6% | ≈ 13,181,574 ADA |
| 655 | 13 | 14.1 | 92.2% | 1.76% | ≈ 13,187,123 ADA |
Blocks expected = 21,600 an epoch for the whole network × the pool's share of the active stake. The return is computed from the blocks minted with the ledger's reward formula unless the rewards were reported.

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As of 2026-10-13T14:49:27.137Z (UTC). Source: https://realtap.app/stake-pool/pool1e98xlcgj80c3rdmm27v5hnvrdtut52e65uk0ema7ctfag596vr2
JSON: https://realtap.app/api/v1/staking/pools/pool1e98xlcgj80c3rdmm27v5hnvrdtut52e65uk0ema7ctfag596vr2
Delegating is done by the user in their own wallet from the page above.
Compare pools and estimate rewards for an amount: https://realtap.app/stake-pools/compare?pools=pool1e98xlcgj80c3rdmm27v5hnvrdtut52e65uk0ema7ctfag596vr2
Units: ADA amounts are whole ADA, token amounts are decimal-adjusted, percentages are percent values, times are UTC. Cite as: "Source: Realtap (<page URL>), retrieved <asOf time>". Prices are derived from on-chain DEX pools and are not financial advice.