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 12:42:18.096313548 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	11.23	3.50	0.53
2	6298	13.44	4.18	0.57
3	6493	15.50	4.80	0.60
5	6898	19.85	6.13	0.66
10	7903	31.49	9.72	0.82
40	13935	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	561	2.44	1.16	0.20
2	741	3.38	1.73	0.22
3	919	4.36	2.33	0.24
5	1277	6.41	3.60	0.28
10	2171	12.13	7.25	0.40
54	10055	98.61	68.52	1.88

CollectCom transaction costs

Parties	UTxO (bytes)	Tx size	% max Mem	% max CPU	Min fee ₳
1	57	525	26.47	7.60	0.44
2	114	636	34.81	9.96	0.53
3	169	747	44.51	12.70	0.63
4	224	857	56.56	15.98	0.76
5	282	969	58.88	16.89	0.79
6	339	1081	71.50	20.34	0.92
7	397	1196	88.32	24.80	1.10
8	450	1307	95.40	26.79	1.17

Cost of Increment Transaction

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	1790	25.50	8.33	0.50
2	1928	26.73	9.40	0.52
3	2097	29.44	10.97	0.56
5	2337	31.96	13.00	0.61
10	3285	45.76	21.03	0.82
39	7560	99.00	57.47	1.70

Cost of Decrement Transaction

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	597	23.68	7.53	0.42
2	802	26.46	8.97	0.46
3	1030	29.28	10.41	0.51
5	1297	32.75	12.69	0.56
10	1861	38.86	17.68	0.67
37	5855	95.73	51.33	1.55

Close transaction costs

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	601	30.21	9.36	0.49
2	835	30.98	10.43	0.51
3	956	35.41	12.46	0.57
5	1168	35.66	13.77	0.59
10	1992	49.67	21.57	0.79
33	5449	93.67	51.32	1.52

Contest transaction costs

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	667	35.95	11.00	0.55
2	843	38.11	12.32	0.58
3	899	39.66	13.34	0.61
5	1245	45.41	16.58	0.69
10	2100	58.76	24.32	0.89
26	4558	96.81	46.96	1.47

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	5972	28.32	9.34	0.71
2	6115	37.44	12.34	0.81
3	6175	43.25	14.23	0.87
4	6289	52.85	17.37	0.98
5	6672	70.10	23.24	1.18
6	6566	75.08	24.73	1.22
7	6853	85.99	28.44	1.35
8	7056	98.26	32.50	1.49

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	20.12	6.62	0.63
10	1	56	6124	21.79	7.29	0.65
10	5	283	6260	30.77	10.75	0.75
10	10	569	6430	41.88	15.03	0.88
10	20	1138	6769	61.34	22.68	1.11
10	37	2102	7345	98.94	37.19	1.54