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	2025-04-07 04:27:17.61713173 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	11.23	3.50	0.53
2	6295	13.13	4.07	0.56
3	6493	15.50	4.80	0.60
5	6898	19.76	6.10	0.66
10	7903	31.18	9.61	0.82
40	13936	98.61	30.29	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	739	3.38	1.73	0.22
3	920	4.36	2.33	0.24
5	1283	6.41	3.60	0.28
10	2177	12.13	7.25	0.40
54	10069	98.61	68.52	1.88

CollectCom transaction costs

Parties	UTxO (bytes)	Tx size	% max Mem	% max CPU	Min fee ₳
1	57	525	25.67	7.41	0.43
2	113	636	34.81	9.96	0.53
3	171	747	46.00	13.08	0.65
4	227	862	54.67	15.47	0.74
5	280	969	64.05	18.16	0.84
6	339	1081	67.68	19.43	0.88
7	392	1196	75.96	21.80	0.97
8	449	1303	98.06	27.43	1.20
9	506	1414	93.03	26.73	1.16

Cost of Increment Transaction

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	1797	25.50	8.33	0.50
2	1916	27.03	9.47	0.52
3	2014	27.16	10.15	0.53
5	2379	32.55	13.28	0.61
10	3180	43.49	20.15	0.79
40	7402	97.49	57.36	1.68

Cost of Decrement Transaction

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	601	23.95	7.60	0.43
2	791	26.42	8.95	0.46
3	865	26.45	9.60	0.47
5	1200	30.65	12.09	0.54
10	1900	41.04	18.30	0.70
40	6239	95.03	53.18	1.58

Close transaction costs

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	665	30.91	9.68	0.50
2	818	30.95	10.43	0.51
3	918	34.70	12.15	0.56
5	1282	39.95	15.27	0.64
10	1953	46.46	20.65	0.76
35	5718	97.56	53.90	1.58

Contest transaction costs

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	700	35.95	11.01	0.55
2	769	37.49	12.02	0.57
3	1025	41.03	13.97	0.63
5	1285	45.33	16.58	0.69
10	2123	58.72	24.32	0.89
27	4654	99.21	48.43	1.51

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	5976	28.32	9.34	0.71
2	6138	38.45	12.72	0.82
3	6171	43.53	14.32	0.88
4	6317	52.20	17.17	0.97
5	6445	65.63	21.62	1.12
6	6679	76.93	25.46	1.25
7	6881	87.70	29.03	1.37
8	7004	92.23	30.47	1.42

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	19.86	6.53	0.63
10	1	57	6126	22.25	7.45	0.65
10	5	285	6262	30.31	10.59	0.75
10	20	1136	6767	62.26	22.99	1.12
10	30	1708	7111	84.49	31.56	1.37
10	37	2104	7347	98.02	36.88	1.53