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	2025-04-29 10:28:15.662745232 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	0e35115a2c7c13c68ecd8d74e4987c04d4539e337643be20bb3274bd	14756
μHead	57166715eadb8d3135964325c016eea546c21e1c0aae974ca67df9a5*	5541
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	6093	10.89	3.38	0.53
2	6295	13.26	4.11	0.56
3	6495	15.28	4.73	0.59
5	6897	19.76	6.10	0.66
10	7908	31.76	9.81	0.83
40	13935	98.39	30.22	1.78

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	1276	6.41	3.60	0.28
10	2179	12.13	7.25	0.40
54	10056	98.61	68.52	1.88

CollectCom transaction costs

Parties	UTxO (bytes)	Tx size	% max Mem	% max CPU	Min fee ₳
1	57	525	25.64	7.39	0.43
2	114	636	33.91	9.76	0.52
3	169	747	44.28	12.60	0.63
4	228	858	50.60	14.55	0.70
5	281	969	61.15	17.50	0.81
6	338	1081	73.39	20.76	0.94
7	394	1192	78.32	22.41	1.00
8	451	1303	89.88	25.58	1.12

Cost of Increment Transaction

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	1826	25.50	8.34	0.50
2	1981	28.26	9.91	0.54
3	2065	28.73	10.66	0.55
5	2447	33.82	13.73	0.63
10	3169	44.12	20.36	0.79
40	7595	99.28	58.10	1.71

Cost of Decrement Transaction

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	597	23.99	7.61	0.43
2	736	25.62	8.73	0.45
3	932	28.32	10.14	0.49
5	1169	30.89	12.15	0.54
10	2093	43.23	18.89	0.73
38	6098	94.92	51.83	1.56

Close transaction costs

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	677	29.15	9.20	0.48
2	770	30.32	10.13	0.50
3	963	32.73	11.64	0.54
5	1369	38.50	15.03	0.63
10	1951	46.18	20.52	0.76
33	5618	96.25	52.46	1.55

Contest transaction costs

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	667	35.99	11.01	0.55
2	878	38.81	12.63	0.59
3	958	40.24	13.62	0.62
5	1472	47.44	17.53	0.72
10	1968	56.98	23.47	0.87
26	4576	98.51	47.67	1.49

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	5998	28.29	9.33	0.71
2	6086	37.47	12.35	0.81
3	6223	46.38	15.30	0.91
4	6396	57.31	18.94	1.03
5	6388	64.61	21.27	1.11
6	6630	73.54	24.25	1.21
7	6828	84.51	27.95	1.33
8	6867	93.27	30.75	1.43

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	6091	19.66	6.46	0.62
10	1	57	6125	22.25	7.45	0.65
10	5	285	6261	31.23	10.90	0.76
10	10	568	6430	40.96	14.72	0.87
10	20	1136	6768	62.72	23.14	1.12
10	37	2108	7351	98.68	37.10	1.54