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	2025-04-01 04:27:50.99410776 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	6094	11.59	3.63	0.54
2	6295	13.04	4.04	0.56
3	6493	15.50	4.80	0.60
5	6895	20.25	6.27	0.66
10	7904	31.18	9.61	0.82
40	13936	98.18	30.14	1.77

Commit transaction costs

This uses ada-only outputs for better comparability.

UTxO	Tx size	% max Mem	% max CPU	Min fee ₳
1	559	2.44	1.16	0.20
2	740	3.38	1.73	0.22
3	923	4.36	2.33	0.24
5	1279	6.41	3.60	0.28
10	2181	12.13	7.25	0.40
54	10058	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	114	636	35.89	10.22	0.54
3	170	751	42.23	12.14	0.61
4	228	858	51.85	14.80	0.71
5	282	969	58.10	16.67	0.78
6	337	1081	74.68	21.06	0.95
7	394	1192	75.50	21.65	0.97
8	450	1303	92.54	26.31	1.14

Cost of Increment Transaction

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	1790	25.50	8.33	0.50
2	1886	25.67	9.01	0.51
3	2188	30.93	11.48	0.58
5	2395	33.02	13.39	0.62
10	3219	43.64	20.26	0.79
37	7323	99.10	56.08	1.68

Cost of Decrement Transaction

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	627	23.68	7.54	0.42
2	768	25.35	8.66	0.45
3	909	27.42	9.87	0.48
5	1154	29.60	11.80	0.53
10	1870	39.83	17.95	0.68
40	6343	98.92	54.26	1.62

Close transaction costs

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	635	28.45	8.89	0.47
2	804	32.85	10.93	0.53
3	864	34.13	11.88	0.55
5	1187	38.91	14.80	0.62
10	2013	50.75	22.08	0.81
34	5714	97.40	53.27	1.57

Contest transaction costs

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	694	35.91	10.99	0.55
2	769	37.49	12.02	0.57
3	900	39.54	13.31	0.61
5	1274	45.37	16.59	0.69
10	1953	56.90	23.45	0.86
26	4532	97.74	47.28	1.48

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	5992	28.32	9.34	0.71
2	6148	38.58	12.75	0.82
3	6286	47.55	15.75	0.92
4	6408	57.02	18.83	1.03
5	6539	63.92	21.08	1.11
6	6691	76.23	25.25	1.24
7	6897	89.26	29.50	1.39
8	6909	97.10	32.12	1.47

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	17.83	5.84	0.60
10	1	57	6125	21.79	7.29	0.65
10	5	284	6260	29.85	10.44	0.74
10	10	568	6429	41.42	14.88	0.88
10	20	1138	6769	61.34	22.68	1.11
10	35	1993	7281	94.68	35.54	1.49