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Statistics for epochs 500 to 550 (#313)
* Statistics for epochs 500 to 550 * Updated logbook
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‎Logbook.md‎

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# Leios logbook
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## 2025-05-02
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### Statistics for blog post
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In support of an upcoming block post motivating Leios, we have analyzed Cardano `mainnet` statistics regarding the Reserve, rewards, transactions, utlization, and fees. See [analysis/epoch-550.md](analysis/epoch-550.md) for methods and details.
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- Findings for Epoch 500
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- The Reserve dropped 12.0 million ADA.
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- The Treasury increased 5.02 million ADA.
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- Non-Treasury ADA in circulation increased by 6.99 million ADA.
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- SPOs received 1.63 million ADA (21.1%) of the rewards.
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- Delegators received 6.10 million ADA (78.9%) of the rewards.
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- Findings for Epochs 500 through 550
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- 272k tx/epoch
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- 0.63 tx/second
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- Fee of 0.34 ADA/tx
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- 19.3% block space utilization
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## 2025-04-28
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### Delta-QSD analysis of transaction lifecycle

‎analysis/epoch-550.md‎

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# Cardano mainnet statistics near Epoch 550
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## Snapshot at Epoch 550
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To orient ourselves, we look at the situation around Epoch 550.
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### Rewards and fees
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```sql
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select
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earned_epoch as "Epoch Earned"
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, sum(amount) / 1e6 as "Reward [ADA/epoch]"
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, fees / 1e6 as "Fees [ADA/Epoch]"
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from reward
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inner join ada_pots
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on earned_epoch = epoch_no - 1
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where earned_epoch between 545 and 553
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group by earned_epoch, epoch_no, fees
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order by earned_epoch desc
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;
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```
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```console
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Epoch Earned | Reward [ADA/epoch] | Fees [ADA/Epoch]
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--------------+----------------------+--------------------
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553 | 7735676.599078000000 | 64560.236707000000
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552 | 7680902.523601000000 | 50927.072843000000
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551 | 7725866.765871000000 | 53017.461145000000
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550 | 7725300.464196000000 | 67431.504009000000
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549 | 7728511.864023000000 | 56324.445971000000
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548 | 7765678.546916000000 | 53136.772606000000
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547 | 7840690.098216000000 | 54873.551989000000
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546 | 7870624.686871000000 | 53377.937268000000
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545 | 7726349.523622000000 | 63417.467271000000
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(9 rows)
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```
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### Treasury and reserve
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```sql
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select
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epoch_no "Epoch"
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, treasury / 1e6 "Treasury [ADA]"
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, reserves / 1e6 "Reserve [ADA]"
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, fees / 1e6 "Fees [ADA]"
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from ada_pots
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where epoch_no between 545 and 555
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order by epoch_no desc
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;
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```
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```console
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Epoch | Treasury [ADA] | Reserve [ADA] | Fees [ADA]
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-------+---------------------+---------------------+--------------------
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554 | 1739008615.83819600 | 7227379990.26737400 | 64560.236707000000
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553 | 1734673185.49121300 | 7239343896.06511500 | 50927.072843000000
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552 | 1730343069.06313000 | 7251344361.79792400 | 53017.461145000000
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551 | 1726047077.83648300 | 7263297721.98475800 | 67431.504009000000
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550 | 1721027451.02057900 | 7275303870.39383600 | 56324.445971000000
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549 | 1716669382.76785800 | 7287372980.42086700 | 53136.772606000000
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548 | 1712261860.26103800 | 7299564319.47391400 | 54873.551989000000
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547 | 1707859322.62212200 | 7311783103.86243300 | 53377.937268000000
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546 | 1703528717.03830800 | 7323776141.50259800 | 63417.467271000000
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545 | 1699217928.89060500 | 7335771117.34635300 | 66943.752902000000
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(10 rows)
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```
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### Disposition of rewards
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```sql
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select
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earned_epoch as "Epoch earned"
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, type as "Recipient"
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, sum(amount) / 1e6 as "Reward [ADA]"
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, sum(amount) / (select sum(amount) from reward where earned_epoch = 550) as "Reward [%/100]"
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from reward
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where earned_epoch = 550
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group by earned_epoch, type
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;
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```
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```console
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Epoch earned | Recipient | Reward [ADA] | Reward [%/100]
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--------------+-----------+----------------------+----------------------------
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550 | leader | 1628532.454779000000 | 0.21080506348285927427
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550 | member | 6096268.009417000000 | 0.78913021411542737867
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550 | refund | 500.0000000000000000 | 0.000064722401713347056331
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(3 rows)
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```
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### Findings
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From this data we see that following between Epoch 500 and 501.
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- The Reserve dropped 12.0 million ADA.
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- The Treasury increased 5.02 million ADA.
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- Non-Treasury ADA in circulation increased by 6.99 million ADA.
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- SPOs received 1.63 million ADA (21.1%) of the rewards.
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- Delegators received 6.10 million ADA (78.9%) of the rewards.
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## Averages from Epoch 500 to 550
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Other statistics of interest, averaged from Epoch 500 to Epoch 550.
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```sql
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select
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avg("Transactions") as "Transactions/epoch"
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, sum("Transactions") / count(distinct "Epoch") / 5 / 24 / 60 / 60 as "Transactions/second"
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, avg("Fees [ADA]") as "Fees [ADA/epoch]"
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, sum("Fees [ADA]") / sum("Transactions") as "Fees [ADA/tx]"
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, avg("Block Size [kB]") as "Block Size [kB]"
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, avg("Block Size [kB]") / (select max_block_size / 1000 from epoch_param where epoch_no = 550) as "Block Utilization [%/100]"
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from (
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select
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epoch_no as "Epoch"
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, sum(tx_count) as "Transactions"
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, sum(size) / 1000 / count(*) as "Block Size [kB]"
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from block
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where epoch_no between 500 and 550
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group by epoch_no
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) txs
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inner join (
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select
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epoch_no as "Epoch"
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, sum(fees) / 1e6 as "Fees [ADA]"
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from ada_pots
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where epoch_no between 500 and 550
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group by epoch_no
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) fees
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using("Epoch")
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;
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```
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```console
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Transactions/epoch | Transactions/second | Fees [ADA/epoch] | Fees [ADA/tx] | Block Size [kB] | Block Utilization [%/100]
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---------------------+------------------------+--------------------+------------------------+---------------------+---------------------------
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272382.647058823529 | 0.63051538671023965333 | 93157.419716509804 | 0.34200937806581931488 | 17.4117647058823529 | 0.19346405228758169889
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(1 row)
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```
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### Findings
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Thus from Epoch 500 to 550 we have the following:
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- 272k tx/epoch
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- 0.63 tx/second
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- Fee of 0.34 ADA/tx
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- 19.3% block space utilization
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