filip(fix): apply EAA amends

[fstoqnov-iohk]

Added aria labels to carousel buttons
Added aria labels to logo links
Added alt text to homepage images
Updated redundant alt text on Navigation logo image

Adjusted heading order on homepage to ensure sequental ordering

Contrast:
Default ‘hover’/‘selected’/‘active’ colour has too low a contrast ratio with the white background
across the site
Footer CTA and copyright have too low a contrast ratio with the white background on all
non-homepage pages


both currently not in line with
WCAG AA and AAA standards

Lighthouse score is now an overall 96 for Accessibility on Homepage and 92 on all other pages

[github-actions]

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	2025-06-16 13:58:12.764841621 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	be6ebc744208c660bf0fdc1cfbb5157477cd305de5b1777e575cbb4c	14665
μHead	1f47a42d1d6edc32ccd834acb19d5db3b2a5232f0bd7eaa8908dc519*	5284
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	5836	10.44	3.31	0.52
2	6035	12.20	3.85	0.54
3	6239	14.68	4.64	0.58
5	6640	18.47	5.82	0.63
10	7647	28.89	9.10	0.79
43	14279	98.91	30.91	1.80

Commit transaction costs

This uses ada-only outputs for better comparability.

UTxO	Tx size	% max Mem	% max CPU	Min fee ₳
1	558	2.44	1.16	0.20
2	742	3.38	1.73	0.22
3	920	4.36	2.33	0.24
5	1274	6.41	3.60	0.28
10	2166	12.13	7.25	0.40
54	10067	98.61	68.52	1.88

CollectCom transaction costs

Parties	UTxO (bytes)	Tx size	% max Mem	% max CPU	Min fee ₳
1	57	525	25.20	7.30	0.43
2	113	636	34.20	9.84	0.53
3	170	747	41.11	11.90	0.60
4	227	858	50.75	14.57	0.70
5	285	969	56.50	16.40	0.77
6	341	1081	64.75	18.82	0.86
7	394	1192	77.33	22.24	0.99
8	450	1303	96.54	27.28	1.18
10	560	1529	99.68	28.62	1.23

Cost of Increment Transaction

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	1794	23.78	7.94	0.48
2	2016	26.73	9.58	0.52
3	2086	27.18	10.32	0.54
5	2412	30.94	12.93	0.60
10	3215	40.74	19.61	0.76
41	7775	99.93	59.50	1.73

Cost of Decrement Transaction

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	598	22.50	7.27	0.41
2	774	25.45	8.75	0.45
3	823	23.95	8.98	0.44
5	1199	29.00	11.73	0.52
10	1833	36.32	17.11	0.65
40	6371	94.68	53.37	1.58

Close transaction costs

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	651	28.99	9.24	0.48
2	812	29.03	9.99	0.49
3	973	30.76	11.21	0.52
5	1323	35.38	14.17	0.60
10	2230	49.40	22.26	0.81
36	5880	95.74	54.49	1.58

Contest transaction costs

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	698	33.73	10.52	0.53
2	858	36.33	12.06	0.57
3	998	38.37	13.35	0.60
5	1289	42.51	16.01	0.67
10	2032	53.70	22.90	0.84
30	5042	99.54	50.81	1.54

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	5778	27.01	9.04	0.69
2	5911	35.76	11.96	0.79
3	6010	44.63	14.94	0.88
4	6088	52.42	17.47	0.97
5	6376	64.86	21.78	1.11
6	6426	72.70	24.40	1.20
7	6636	84.35	28.33	1.33
8	6748	89.72	30.16	1.39
9	6671	86.93	29.06	1.36

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	1	57	5869	20.78	7.06	0.63
10	5	284	6003	29.80	10.58	0.73
10	10	570	6174	38.64	14.15	0.84
10	30	1706	6853	80.27	30.53	1.32
10	39	2223	7162	99.44	38.05	1.54

End-to-end benchmark results

This page is intended to collect the latest end-to-end benchmark results produced by Hydra's continuous integration (CI) system from the latest master code.

Please note that these results are approximate as they are currently produced from limited cloud VMs and not controlled hardware. Rather than focusing on the absolute results, the emphasis should be on relative results, such as how the timings for a scenario evolve as the code changes.

Generated at 2025-06-16 14:01:02.158855831 UTC

Baseline Scenario

Number of nodes	1
Number of txs	300
Avg. Confirmation Time (ms)	4.482365893
P99	8.013755189999994ms
P95	5.65875835ms
P50	4.2487525ms
Number of Invalid txs	0

Memory data

Time	Used	Free
2025-06-16 13:59:47.166485784 UTC	0m	0;
2025-06-16 13:59:52.166458232 UTC	12	0;
2025-06-16 13:59:57.166429474 UTC	6	0;
2025-06-16 14:00:02.166471166 UTC	1	0;
2025-06-16 14:00:07.166439516 UTC	1	0;
2025-06-16 14:00:12.166422793 UTC	1	0;

Three local nodes

Number of nodes	3
Number of txs	900
Avg. Confirmation Time (ms)	28.420566245
P99	44.87088228999999ms
P95	39.09702245ms
P50	26.8424765ms
Number of Invalid txs	0

Memory data

Time	Used	Free
2025-06-16 14:00:25.4979662 UTC	0m	0;
2025-06-16 14:00:30.498723745 UTC	10	0;
2025-06-16 14:00:35.499172088 UTC	6	0;
2025-06-16 14:00:40.497912901 UTC	22	0;
2025-06-16 14:00:45.498028796 UTC	15	0;
2025-06-16 14:00:50.498068069 UTC	2	0;
2025-06-16 14:00:55.498066221 UTC	2	0;
2025-06-16 14:01:00.498041825 UTC	2	0;

[github-actions]

Transaction cost differences

No cost or size differences found

[v0d1ch]

Thanks @fstoqnov-iohk !