Transactions 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	2023-03-30 16:36:52.908059852 UTC
Max. memory units	14000000
Max. CPU units	10000000000
Max. tx size (kB)	16384

Script summary

Name	Hash	Size (Bytes)
νInitial	9492414f8f96e8483a0b8ee268fc06a954641cb2cbaa9a8b093c2c9b	4621
νCommit	5d3f107aaa56d06188cf231941cf8163e777236a9cfdc48fd4bbfa23	2422
νHead	82f16b51e2d81c6f4d42dd7398b4713a445464902f63dfd86ffe754e	8954
μHead	4083fa7081a0f4b4092fb02867c9ac594bb0e8bab8110ab242ba5a72*	4458

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

Cost of Init Transaction

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	5055	14.97	5.92	0.54
2	5259	16.47	6.46	0.56
3	5464	17.79	6.92	0.58
5	5876	23.58	9.14	0.67
10	6901	37.39	14.42	0.86
37	12437	99.53	37.82	1.77

Cost of Commit Transaction

Currently only one UTxO per commit allowed (this is about to change soon)

UTxO	Tx size	% max Mem	% max CPU	Min fee ₳
1	600	15.83	6.22	0.35

Cost of CollectCom Transaction

Parties	UTxO (bytes)	Tx size	% max Mem	% max CPU	Min fee ₳
1	57	825	24.80	10.07	0.46
2	114	1139	40.66	16.63	0.65
3	170	1461	59.45	24.46	0.87
4	227	1784	80.95	33.44	1.12

Cost of Close Transaction

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	572	15.56	6.61	0.35
2	804	18.73	8.21	0.40
3	969	20.12	8.98	0.42
5	1300	22.95	10.54	0.47
10	2132	29.84	14.35	0.59
50	8722	86.35	45.44	1.56

Cost of Contest Transaction

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	683	21.73	9.11	0.42
2	840	23.45	9.99	0.45
3	1006	25.64	11.06	0.48
5	1336	29.06	12.83	0.54
10	2168	37.67	17.26	0.67
46	8103	99.53	49.12	1.67

Cost of Abort Transaction

Some variation because of random mixture of still initial and already committed outputs.

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	5169	29.53	12.62	0.71
2	5493	48.08	20.77	0.93
3	5816	70.09	30.47	1.19
4	6002	90.07	39.12	1.42

Cost of FanOut Transaction

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 ₳
5	0	0	5074	10.59	4.43	0.49
5	1	57	5113	12.12	5.31	0.51
5	5	285	5257	18.22	8.83	0.59
5	10	570	5438	25.85	13.24	0.69
5	20	1138	5792	41.11	22.05	0.90
5	30	1708	6161	56.37	30.86	1.10
5	40	2277	6517	71.64	39.68	1.30
5	50	2848	6877	86.92	48.50	1.50
5	58	3300	7161	99.14	55.56	1.67