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	2025-06-25 04:34:11.244683663 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	5840	10.44	3.31	0.52
2	6038	12.41	3.92	0.54
3	6239	14.43	4.56	0.57
5	6641	18.47	5.82	0.63
10	7644	29.44	9.29	0.79
43	14282	98.61	30.81	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	740	3.38	1.73	0.22
3	918	4.36	2.33	0.24
5	1279	6.41	3.60	0.28
10	2173	12.13	7.25	0.40
54	10070	98.61	68.52	1.88

CollectCom transaction costs

Parties	UTxO (bytes)	Tx size	% max Mem	% max CPU	Min fee ₳
1	57	525	24.43	7.12	0.42
2	114	636	32.23	9.37	0.51
3	171	751	40.24	11.69	0.59
4	226	858	49.48	14.30	0.69
5	282	969	56.53	16.41	0.77
6	338	1081	68.61	19.74	0.89
7	394	1192	86.69	24.39	1.08
8	450	1303	90.30	25.80	1.12

Cost of Increment Transaction

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	1802	24.16	8.03	0.48
2	1933	25.40	9.11	0.51
3	2066	26.81	10.23	0.53
5	2453	32.04	13.33	0.61
10	3202	41.83	19.87	0.77
39	7679	98.73	57.92	1.70

Cost of Decrement Transaction

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	601	22.50	7.27	0.41
2	785	25.49	8.76	0.45
3	864	25.79	9.51	0.47
5	1268	31.03	12.31	0.55
10	1943	39.76	18.07	0.69
43	6792	99.30	56.66	1.66

Close transaction costs

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	676	29.04	9.26	0.48
2	842	29.03	10.00	0.49
3	1032	32.11	11.80	0.54
5	1340	35.35	14.17	0.60
10	2056	47.79	21.44	0.78
36	5755	98.99	54.99	1.60

Contest transaction costs

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	679	33.69	10.49	0.53
2	807	35.73	11.78	0.56
3	951	37.66	13.04	0.59
5	1320	42.87	16.17	0.67
10	1957	52.91	22.55	0.83
30	4996	99.73	50.83	1.54

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	5774	26.97	9.03	0.69
2	5900	35.60	11.92	0.78
3	6089	45.51	15.30	0.90
4	6133	51.10	17.10	0.96
5	6373	64.64	21.73	1.11
6	6693	76.67	25.94	1.25
7	6696	84.28	28.36	1.33
8	6507	86.18	28.73	1.34
9	6795	95.43	31.96	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	19.64	6.56	0.61
10	1	58	5870	19.90	6.76	0.62
10	5	285	6004	28.92	10.28	0.72
10	10	568	6172	39.97	14.61	0.85
10	30	1711	6857	80.53	30.62	1.32
10	38	2162	7125	96.06	36.79	1.51