Transaction costs

Sizes and execution budgets for Hydra protocol transactions. Note that unlisted parameters are currently using arbitrary values and results are not fully deterministic and comparable to previous runs.

Metadata
Generated at	2025-06-01 04:38:35.801564949 UTC
Max. memory units	14000000
Max. CPU units	10000000000
Max. tx size (kB)	16384

Script summary

Name	Hash	Size (Bytes)
νInitial	c8a101a5c8ac4816b0dceb59ce31fc2258e387de828f02961d2f2045	2652
νCommit	61458bc2f297fff3cc5df6ac7ab57cefd87763b0b7bd722146a1035c	685
νHead	be6ebc744208c660bf0fdc1cfbb5157477cd305de5b1777e575cbb4c	14665
μHead	1f47a42d1d6edc32ccd834acb19d5db3b2a5232f0bd7eaa8908dc519*	5284
νDeposit	ae01dade3a9c346d5c93ae3ce339412b90a0b8f83f94ec6baa24e30c	1102

• The minting policy hash is only usable for comparison. As the script is parameterized, the actual script is unique per head.

Init transaction costs

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	5837	10.35	3.28	0.51
2	6038	12.20	3.85	0.54
3	6236	14.26	4.50	0.57
5	6640	18.59	5.86	0.63
10	7644	28.89	9.10	0.79
43	14279	98.53	30.78	1.80

Commit transaction costs

This uses ada-only outputs for better comparability.

UTxO	Tx size	% max Mem	% max CPU	Min fee ₳
1	561	2.44	1.16	0.20
2	743	3.38	1.73	0.22
3	922	4.36	2.33	0.24
5	1282	6.41	3.60	0.28
10	2177	12.13	7.25	0.40
54	10064	98.61	68.52	1.88

CollectCom transaction costs

Parties	UTxO (bytes)	Tx size	% max Mem	% max CPU	Min fee ₳
1	57	525	25.20	7.30	0.43
2	114	636	33.25	9.61	0.52
3	171	747	43.84	12.55	0.63
4	226	858	52.50	15.04	0.72
5	282	969	58.06	16.74	0.78
6	339	1081	66.63	19.26	0.88
7	395	1192	85.00	24.11	1.06
8	449	1303	89.99	25.62	1.12

Cost of Increment Transaction

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	1785	24.24	8.05	0.48
2	1999	26.76	9.58	0.52
3	2129	27.72	10.59	0.54
5	2279	28.79	12.12	0.57
10	3092	39.35	18.99	0.74
40	7661	98.16	58.31	1.70

Cost of Decrement Transaction

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	614	22.77	7.34	0.41
2	765	23.47	8.18	0.43
3	944	25.94	9.54	0.47
5	1153	28.07	11.46	0.51
10	1974	39.39	17.97	0.68
41	6645	99.33	55.28	1.64

Close transaction costs

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	690	27.41	8.82	0.47
2	780	30.83	10.47	0.51
3	966	30.73	11.19	0.52
5	1173	36.13	14.11	0.60
10	2249	46.69	21.55	0.78
34	5657	98.02	53.73	1.58

Contest transaction costs

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	679	33.69	10.50	0.53
2	851	36.37	12.08	0.57
3	941	37.70	13.05	0.59
5	1261	42.35	15.90	0.66
10	1854	51.68	21.97	0.81
29	4937	97.83	49.73	1.52

Abort transaction costs

There is some variation due to the random mixture of initial and already committed outputs.

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	5801	26.97	9.03	0.69
2	5920	35.56	11.92	0.78
3	5929	40.27	13.39	0.83
4	6175	54.91	18.40	1.00
5	6373	64.79	21.74	1.11
6	6453	74.25	24.91	1.21
7	6555	79.85	26.79	1.28
8	6806	90.20	30.32	1.40
9	6761	95.42	31.95	1.45

FanOut transaction costs

Involves spending head output and burning head tokens. Uses ada-only UTXO for better comparability.

Parties	UTxO	UTxO (bytes)	Tx size	% max Mem	% max CPU	Min fee ₳
10	0	0	5834	19.19	6.41	0.61
10	5	284	6003	29.80	10.58	0.73
10	20	1137	6511	59.57	22.38	1.08
10	38	2163	7125	96.06	36.79	1.51