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	2025-04-03 04:27:24.785689212 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	6091	11.23	3.50	0.53
2	6295	13.26	4.11	0.56
3	6495	15.50	4.80	0.60
5	6898	19.76	6.10	0.66
10	7904	31.36	9.67	0.82
40	13936	98.79	30.35	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	742	3.38	1.73	0.22
3	917	4.36	2.33	0.24
5	1282	6.41	3.60	0.28
10	2177	12.13	7.25	0.40
54	10061	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	34.81	9.96	0.53
3	170	751	42.24	12.14	0.61
4	226	858	56.42	15.92	0.76
5	282	969	67.02	18.84	0.87
6	337	1081	73.12	20.73	0.94
7	395	1192	90.71	25.33	1.12
8	451	1303	93.78	26.46	1.16

Cost of Increment Transaction

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	1806	25.42	8.31	0.50
2	1886	25.59	8.99	0.50
3	2017	27.16	10.15	0.53
5	2439	33.82	13.72	0.63
10	3228	44.98	20.71	0.80
38	7306	98.08	56.36	1.67

Cost of Decrement Transaction

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	608	23.71	7.55	0.42
2	774	26.94	9.08	0.47
3	916	27.54	9.90	0.48
5	1185	30.69	12.10	0.54
10	2029	42.93	18.83	0.72
35	5709	90.45	48.56	1.48

Close transaction costs

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	651	30.91	9.67	0.50
2	858	31.65	10.73	0.52
3	986	33.48	11.95	0.55
5	1130	37.80	14.33	0.61
10	2057	47.74	21.18	0.78
33	5472	99.84	53.03	1.58

Contest transaction costs

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	693	35.99	11.02	0.55
2	810	38.15	12.32	0.58
3	899	39.62	13.33	0.61
5	1303	45.99	16.87	0.70
10	2146	58.56	24.29	0.89
27	4623	98.04	47.89	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	5986	28.29	9.32	0.71
2	6126	37.44	12.34	0.81
3	6217	46.80	15.42	0.91
4	6325	53.74	17.70	0.99
5	6494	66.28	21.89	1.13
6	6638	76.49	25.21	1.24
7	6736	78.90	26.06	1.27
8	6756	87.98	28.92	1.37

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	19.20	6.31	0.62
10	1	57	6126	23.37	7.82	0.67
10	5	285	6261	30.31	10.59	0.75
10	10	569	6431	42.53	15.26	0.89
10	20	1140	6772	63.18	23.30	1.13
10	30	1707	7111	83.11	31.09	1.36
10	36	2050	7316	94.97	35.74	1.50