Arqma Blockchain Explorer

(No Javascript | No Cookies | No Web Analytics Trackers | No Images | Open Sourced)

Server Time: 2026-07-27 04:03:57 | Transaction Pool | Autorefresh is OFF | Go to stagenet explorer | Go to mainnet explorer

Network difficulty: 184000081 | Hard fork: v19 | Hash rate: 1.533 MH/s | Staking Requirement: 100000.000000000 ARQ | Fee: 0.000000050/byte + 0.000090000/output | Median block size limit: 1024.00 kB | Data From 00:00:51 [h:m:s] ago

TX Types Legend: Registration: 🏁 | Contribution: ⚑ | Recommission: 👍 | Decommission: 👎 | Deregister: 🚫 | IP Change Penalty: 📋 | Stake Unlock: 🔓

Arqma emission (fees) is 39423643.239012659 (1046.916455359) as of 1991861 block

Transaction Pool

(No Of TXs: 3, Size: 5.7480 kB, Updated every 5 seconds)

Age [HH:MM:SS]	Type	Transaction Hash	Fee/Per kB	In/Out	TX Size [kB]
00:00:18		a1418de9cbd4c279be882dc6080504b80131d666a44e6185d5991f70a7822600	0.0003/0.0001	2/2	1.92
00:00:18		94ab9d5225eea2dd7192061335675ff9bab871866db03ea9c0a1469293dbe51f	0.0003/0.0001	2/2	1.92
00:00:18		afc25a1f8d1d5b11d358d2da5bab05e1dd43ff0911847c73c757847f53faa894	0.0003/0.0001	2/2	1.91

Transactions In Older Blocks

(Median size of 100 blocks: 1024.00 kB)

Height	Age [d:h:m:s]	Size [kB]	Type	Transaction Hash	Fee	Outputs	In/Out	TX Size [kB]
1761002	352:15:13:00	0.3691		845d03eeb5c0b84e9732db430cfc4294ae6055a245f902a7aba96a886736d8c8	N/A	29.000000000	0/6	0.3691
1761001	352:15:13:36	0.3691		675153d8ba327d2bd010cc3c822c4a11c4456fec8345f638fc9ab027e777dce0	N/A	29.000000000	0/6	0.3691
1761000	352:15:14:06	0.3291		8250574cf7a95f3dbaf1950ac6d9ac8b4995344b5855caa9159e5a50bbb5fd79	N/A	29.000000000	0/5	0.3291
1760999	352:15:14:21	0.4092		611b360802325dbb493d7b98423b8efcb9f8517f8161301ab1c2c0c79b9b555f	N/A	29.000000000	0/7	0.4092
1760998	352:15:16:37	0.3691		b32a739d3e1acebd0f51c8971355a92d864a3e9f986bf5908f099b472d7291b4	N/A	29.000000000	0/6	0.3691
1760997	352:15:16:48	0.3691		f52b277361508c259b373ae544de03b8d790e8c59df836f6aabcd1c019708948	N/A	29.000000000	0/6	0.3691
1760996	352:15:18:05	0.3691		d6d3a74ff5fdfad2a04f86b0fd0512b94cc18fc81de51754feef720c604ac1fd	N/A	29.000000000	0/6	0.3691
1760995	352:15:19:42	0.3691		f52c2d9dd7cc6e7883691fbfa112657886a6bef5bd65471156439d1500692dde	N/A	29.000000000	0/6	0.3691
1760994	352:15:19:56	0.3691		271fc83d68f50d2c06f52633d65ec36e24f24941796664031fbea4c59682e5f7	N/A	29.000000000	0/6	0.3691
1760993	352:15:23:16	0.3691		003bd59869090c3c416da2dc74cbd8770e78941076fa5e87aceb7c27dfecf390	N/A	29.000000000	0/6	0.3691
1760992	352:15:29:18	0.3691		7549cb393cda712a67c4856afc43c6675ce071cdb74d7ed390c28b670ad74db5	N/A	29.000000000	0/6	0.3691
1760991	352:15:30:36	0.3691		c99c08d4e7a06afeb23912be298adf73d89cc22a3b3e6f5610ec025880140991	N/A	29.000000000	0/6	0.3691
1760990	352:15:30:38	0.3291		e7886c38eb6efd5e417920886addaf3dbb32db2ed5a529957e88a8d4e47aff35	N/A	29.000000000	0/5	0.3291
1760989	352:15:31:04	5.4844		5c1d4469ccc59878ea5c91ccb4730a3381c837f8d474751ca86003be00e86850	N/A	29.001299250	0/7	0.4092
				5c532354ff25499e70e9b074c47f40c504f510bff07a7e5e1491b31bbb71761e	0.000649750	?	2/2	2.5381
				9fd4e4570af7fc85b60684e87bb1c7e8c7d8bc26b7bfe7a41c8e8e144ba1d4fa	0.000649500	?	2/2	2.5371
1760988	352:15:32:56	0.3691		f9ac36177020a1913fb4ecf115a112337fc7fcd48e104309c1e8e1bef0b793af	N/A	29.000000000	0/6	0.3691
1760987	352:15:35:32	0.3691		4548edd93907def3047e56c2a66a218b742e69b32f4396dbae043434c82ab30e	N/A	29.000000000	0/6	0.3691
1760986	352:15:35:56	15.0156		0004cc48b585e70b5735509ba2191a3e6fe71ee0c70d99945b85522931b1165f	N/A	29.003750000	0/6	0.3691
				7101c9ff0ab84b1745c1cc8a952736b1f7e51c2821540b53c83aa97a320986a8	0.003750000	?	17/2	14.6465
1760985	352:15:38:43	13.0508		babaeae311a7b2bce0bd20db12a9cd907dee814800e1dbd1704c1a9547f334b1	N/A	29.003246500	0/6	0.3691
				bb84582ebceef20afa0d1ce7688fda2104c23e583f36bca439566b0440e0be1f	0.000649750	?	2/2	2.5381
				5fb328b457efde1f61ce32f8125e3b090652a2235e7f14df6412ce067aade558	0.000649250	?	2/2	2.5361
				6f64bc1f43d2663056787c217c484cc5bbc99e7344aaa406240f69e79567339f	0.000649500	?	2/2	2.5371
				75466ff90986f931f2bbe1af8be831ec60b3a89745bd59c5aa282404640c7f1e	0.000649750	?	2/2	2.5381
				99201b7d0ffa6b76e9e199e3002aba88af03909219ff70393d6b40b8cf71b5b4	0.000648250	?	2/2	2.5322
1760984	352:15:42:01	0.3691		45a7a7d4a6b262498caaf6a3e1f257e16c18fe9eee15139449f78692ebe85a45	N/A	29.000000000	0/6	0.3691
1760983	352:15:44:30	2.9102		638c2930f993783a25a2cce7ba7e08f1b99f5212e5f8b19e91e2fdfe3ec823b5	N/A	29.000650500	0/6	0.3691
				acbf1de9425b39a38406c794e16c0a0b14f864333672bb29f3ff64dec044cdaa	0.000650500	?	2/2	2.5410

Current Page: 11543/99593

0 service nodes awaiting contributions, 0 decommissioned service nodes, and 51 active service nodes.

Service Nodes Awaiting Contributions (0)

Public Key

Contributors

Operator Fee (%)

Contributed

Open For Contribution

Min. Contribution

Expiry Date UTC (Estimated)

Inactive/Decommissioned Service Nodes (0)

(These service nodes are currently decommissioned for failing network obligations, are not earning rewards, and face deregistration soon)

Public Key

Contributors

Operator Fee (%)

Decommission Height

Last Uptime Proof

Blocks until Dereg.

Active Service Nodes (51)

Public Key	Contributors	Operator Fee (%)	Staking Requirement	Last Reward Height	Last Uptimr Proof	Expiry Date UTC (Estimated)
d3e9da49cf45266c3a0270253b0e2921dcbf939cfa52e5de31130d9ef5fb921d	4/12	50	100000.000000000	1991812	00:02:16	Staking Infinitely
53b13c3b12f633765fad6a3af5e9910067af666c8c35940a5d0190ef05e86016	1/12		100000.000000000	1991813	00:36:59	Staking Infinitely
2083e7a16cef72aced08ba92106bf9cff6725bede937ff82c1156fd7fa2f3c7a	1/12		100000.000000000	1991814	00:50:20	Staking Infinitely
64704fc7e91c0d73d5a05f608f0899b45e99fa711383057dcc59064a98c257ab	4/12	66	100000.000000000	1991815	00:47:39	Staking Infinitely
c93716c955d7ced8be22fb112a0344fabde019949f2b26fedff327172ba6a973	2/12	66	100000.000000000	1991816	00:50:26	Staking Infinitely
ca0113d6999df9187b7959b602c7557cf9658a274fd89948c5aead79eb95a510	1/12		100000.000000000	1991817	00:39:56	Staking Infinitely
0a23d89cbd41b85c5bffec0f53289536393e1a91a6537caf7b2064d97f92f7bb	1/12		100000.000000000	1991818	00:16:47	Staking Infinitely
139595b1c4670eb35a9cc6d32b6c351c53422d6ebf9405d0e2de6edb09afa5f2	1/12		100000.000000000	1991819	00:14:34	Staking Infinitely
cf8f65a97c31057a45dec63b065e23d0763c1ea88c7282fafd738e3e090ef01b	2/12	70	100000.000000000	1991820	00:16:38	Staking Infinitely
c6c5fce08eef76dca701248665f0586f83da2243ba13781899abc525b3572063	3/12	50	100000.000000000	1991821	00:46:22	Staking Infinitely
+ 41 more ↪

click here to see the full service node lists (at most only 10 of each list are shown here)

Uptime quorum for height 1991860)

Validators 10:
Public Key	Last Uptime Proof	Expiry Date UTC (Estimated)
0: 781efae048bb90829a0c7ce9f4c9c34e572d236955e91f4b3c86a85effa632d5	00:10:43	Staking Infinitely (N/A)
1: 848ad910440f790d4a687cad83b333f99dec1fb47bae617c7a02db65b2f1c244	00:48:58	Staking Infinitely (N/A)
2: de7f05e258ce90d2e33e7e62955c9f29daa1f9e5ab291884505203cf4cad83a8	01:02:36	Staking Infinitely (N/A)
3: 5d21979e8b9332bfc583b3855b5e1b047080dce4609a21454595892ca797f514	00:02:28	Staking Infinitely (N/A)
4: c338966f59c208f065e570e4631dced159118467b174e2cadc0bd59ff4768987	00:48:35	Staking Infinitely (N/A)
5: 361f463346d3409705042d85617b51e1c61f8821cc3c21f16ce9034d5b761c1f	00:11:49	Staking Infinitely (N/A)
6: c93716c955d7ced8be22fb112a0344fabde019949f2b26fedff327172ba6a973	00:50:26	Staking Infinitely (N/A)
7: 2c9277494767de038291669f392ceb66b3889c23c574ab42db08e0b48ee8a7bf	00:41:15	Staking Infinitely (N/A)
8: 139595b1c4670eb35a9cc6d32b6c351c53422d6ebf9405d0e2de6edb09afa5f2	00:14:34	Staking Infinitely (N/A)
9: aa78babccc4e6e29d3becac648489e6da5c375ae22566dd9cc65880210d81539	00:31:35	Staking Infinitely (N/A)
Nodes to test (41):
0: 45f9349a3ceee3a75d6142204286d37dacf81c1f9ec01a65e7b716269726635d	00:09:43	Staking Infinitely (N/A)
1: afb246351ed7e9eadff997ae1ebcfcdd297bfabfc15398a8202ffcf1e3ceeb54	00:25:30	Staking Infinitely (N/A)
2: 0a23d89cbd41b85c5bffec0f53289536393e1a91a6537caf7b2064d97f92f7bb	00:16:47	Staking Infinitely (N/A)
3: 76e3e01fe63166ca4e448a2d9353486dbf966804c0eb51437d135fdd93e3eb3f	00:40:23	Staking Infinitely (N/A)
4: e9ce4cbc023dd13600dd1b84e811838cccc09a169ab6cb51f537481242bddb1a	00:08:02	Staking Infinitely (N/A)
5: cf8f65a97c31057a45dec63b065e23d0763c1ea88c7282fafd738e3e090ef01b	00:16:38	Staking Infinitely (N/A)
6: 33ef2ff577821dfc3e8ba0b6a7b62759f092c53d798cc1a9c5ba85f59f549efc	00:38:40	Staking Infinitely (N/A)
7: 5a67c6e399571ec4665cc61cc19a5e84eeab60cf51c4f75fac5eea24a33d87e0	00:50:36	Staking Infinitely (N/A)
8: c99d98eadc123984ca4f9042e6e2e3460e43467a7136f61f7f0960ef92fec01e	00:36:36	Staking Infinitely (N/A)
9: 2f235e88eada0dcabd49b9f2ee0fcd1002dbfabfe7dc273dc445e1e8abc220c0	00:25:12	Staking Infinitely (N/A)
+ 31 more ↪

Uptime quorum for height 1991859)

Validators 10:
Public Key	Last Uptime Proof	Expiry Date UTC (Estimated)
0: 94b370885630009cbe68165b641e51343bcb90aba151434230424f6e3ec4a6d2	00:57:29	Staking Infinitely (N/A)
1: c93716c955d7ced8be22fb112a0344fabde019949f2b26fedff327172ba6a973	00:50:26	Staking Infinitely (N/A)
2: 30f9c742e16707fb9b0c9c2078ed750595e297e4a0f75b972794766e25447cfc	00:39:08	Staking Infinitely (N/A)
3: 4a9a479460d135c51723254462919ff51e4b692f2bc4aedafb26316494f45a64	00:37:59	Staking Infinitely (N/A)
4: c338966f59c208f065e570e4631dced159118467b174e2cadc0bd59ff4768987	00:48:35	Staking Infinitely (N/A)
5: 848ad910440f790d4a687cad83b333f99dec1fb47bae617c7a02db65b2f1c244	00:48:58	Staking Infinitely (N/A)
6: b98ee2847b18dc4e46be8e384d59157a67a5366ee8b03553c519b520e147ef65	01:04:27	Staking Infinitely (N/A)
7: a5ae405941249e1cc812bdae01081cdbfe7963f1bc8d299e444effc2b6930195	01:00:51	Staking Infinitely (N/A)
8: 76e3e01fe63166ca4e448a2d9353486dbf966804c0eb51437d135fdd93e3eb3f	00:40:23	Staking Infinitely (N/A)
9: 3a695a55e9442573865950ec85b393e7ade3a76690b62d0e992f32f246943bd1	01:00:58	Staking Infinitely (N/A)
Nodes to test (41):
0: f0e1913158cd650f98270490ded011fc138bb0a18bce9dcb796276b58f32340a	00:54:44	Staking Infinitely (N/A)
1: 75ed97a747c6b790917a62befd733ec67df8a7b5a9861baa432521eaa788d2e2	00:43:51	Staking Infinitely (N/A)
2: b42fb5a319f9ef592ada30e483b64431d05386ba5692727d0e64a15802be3ef5	00:02:48	Staking Infinitely (N/A)
3: ab1264fe8acaba585069c1fb0afe0804a97bc00ef269c17231b7994024851111	00:06:23	Staking Infinitely (N/A)
4: f63e2a3a60e5d07f8fe0a32943c3f362d3d441c0ba771a997e9c893f16e4dff2	00:33:47	Staking Infinitely (N/A)
5: 5d21979e8b9332bfc583b3855b5e1b047080dce4609a21454595892ca797f514	00:02:28	Staking Infinitely (N/A)
6: c442b8c2be6b9175211390d4dbf3d3c6b9c8132517335eabbffce8b68da71b36	00:25:25	Staking Infinitely (N/A)
7: 64704fc7e91c0d73d5a05f608f0899b45e99fa711383057dcc59064a98c257ab	00:47:39	Staking Infinitely (N/A)
8: 3cb0bba8f15c0902db46604f9fb6badeb0f611a645e4b29fb899342107c1f8c7	00:53:53	Staking Infinitely (N/A)
9: 5a67c6e399571ec4665cc61cc19a5e84eeab60cf51c4f75fac5eea24a33d87e0	00:50:36	Staking Infinitely (N/A)
+ 31 more ↪

Uptime quorum for height 1991858)

Validators 10:
Public Key	Last Uptime Proof	Expiry Date UTC (Estimated)
0: 64704fc7e91c0d73d5a05f608f0899b45e99fa711383057dcc59064a98c257ab	00:47:39	Staking Infinitely (N/A)
1: 75ed97a747c6b790917a62befd733ec67df8a7b5a9861baa432521eaa788d2e2	00:43:51	Staking Infinitely (N/A)
2: 0a23d89cbd41b85c5bffec0f53289536393e1a91a6537caf7b2064d97f92f7bb	00:16:47	Staking Infinitely (N/A)
3: 050e45639e86a90ca465c5194642d9fee300ac170acdbb2c0144fc8ebaaf6b82	00:13:37	Staking Infinitely (N/A)
4: 80a869c7963e4c92ccd1032749e29b33e7e943f4e70cbe8d9a3110115a0a53e3	00:18:55	Staking Infinitely (N/A)
5: d3e9da49cf45266c3a0270253b0e2921dcbf939cfa52e5de31130d9ef5fb921d	00:02:16	Staking Infinitely (N/A)
6: cf8f65a97c31057a45dec63b065e23d0763c1ea88c7282fafd738e3e090ef01b	00:16:38	Staking Infinitely (N/A)
7: b42fb5a319f9ef592ada30e483b64431d05386ba5692727d0e64a15802be3ef5	00:02:48	Staking Infinitely (N/A)
8: 139595b1c4670eb35a9cc6d32b6c351c53422d6ebf9405d0e2de6edb09afa5f2	00:14:34	Staking Infinitely (N/A)
9: 4a9a479460d135c51723254462919ff51e4b692f2bc4aedafb26316494f45a64	00:37:59	Staking Infinitely (N/A)
Nodes to test (41):
0: a5ae405941249e1cc812bdae01081cdbfe7963f1bc8d299e444effc2b6930195	01:00:51	Staking Infinitely (N/A)
1: b98ee2847b18dc4e46be8e384d59157a67a5366ee8b03553c519b520e147ef65	01:04:27	Staking Infinitely (N/A)
2: 2f235e88eada0dcabd49b9f2ee0fcd1002dbfabfe7dc273dc445e1e8abc220c0	00:25:12	Staking Infinitely (N/A)
3: c9839bdce086483c6fae8ede8600e4410c5dcd2a431148689480ddfd4c6c9363	00:11:08	Staking Infinitely (N/A)
4: bf84fec11377bd3f6a46c27484a8f46050274067047fefe4b15cfd566d68a671	00:02:54	Staking Infinitely (N/A)
5: a382ea37422bc7715fb954fd567ae77c7b8db3bf92a2d4ac48025e0122832641	00:45:08	Staking Infinitely (N/A)
6: 848ad910440f790d4a687cad83b333f99dec1fb47bae617c7a02db65b2f1c244	00:48:58	Staking Infinitely (N/A)
7: 3cb0bba8f15c0902db46604f9fb6badeb0f611a645e4b29fb899342107c1f8c7	00:53:53	Staking Infinitely (N/A)
8: 30f9c742e16707fb9b0c9c2078ed750595e297e4a0f75b972794766e25447cfc	00:39:08	Staking Infinitely (N/A)
9: aa78babccc4e6e29d3becac648489e6da5c375ae22566dd9cc65880210d81539	00:31:35	Staking Infinitely (N/A)
+ 31 more ↪

Checkpoint quorum for height 1991860 (determined by block 1991849)

Public Key	Last Uptime Proof	Expiry Date UTC (Estimated)
0: bf84fec11377bd3f6a46c27484a8f46050274067047fefe4b15cfd566d68a671	00:02:54	Staking Infinitely (N/A)
1: ab1264fe8acaba585069c1fb0afe0804a97bc00ef269c17231b7994024851111	00:06:23	Staking Infinitely (N/A)
2: 5d21979e8b9332bfc583b3855b5e1b047080dce4609a21454595892ca797f514	00:02:28	Staking Infinitely (N/A)
3: 3cb0bba8f15c0902db46604f9fb6badeb0f611a645e4b29fb899342107c1f8c7	00:53:53	Staking Infinitely (N/A)
4: 53b13c3b12f633765fad6a3af5e9910067af666c8c35940a5d0190ef05e86016	00:36:59	Staking Infinitely (N/A)
5: 30f3281710c23bb2c9b11a8bc0a3f63876ad2d974a55f08db00dde2f1fce4f3e	00:15:38	Staking Infinitely (N/A)
6: b98ee2847b18dc4e46be8e384d59157a67a5366ee8b03553c519b520e147ef65	01:04:27	Staking Infinitely (N/A)
7: b42fb5a319f9ef592ada30e483b64431d05386ba5692727d0e64a15802be3ef5	00:02:48	Staking Infinitely (N/A)
8: cf8f65a97c31057a45dec63b065e23d0763c1ea88c7282fafd738e3e090ef01b	00:16:38	Staking Infinitely (N/A)
9: 64704fc7e91c0d73d5a05f608f0899b45e99fa711383057dcc59064a98c257ab	00:47:39	Staking Infinitely (N/A)
10: 83b11eca71c4a2d77d256304fd422493ed4d290e3cb084bf76758d239fe9a0b4	00:12:06	Staking Infinitely (N/A)
11: 76e3e01fe63166ca4e448a2d9353486dbf966804c0eb51437d135fdd93e3eb3f	00:40:23	Staking Infinitely (N/A)
12: 2f235e88eada0dcabd49b9f2ee0fcd1002dbfabfe7dc273dc445e1e8abc220c0	00:25:12	Staking Infinitely (N/A)
13: c338966f59c208f065e570e4631dced159118467b174e2cadc0bd59ff4768987	00:48:35	Staking Infinitely (N/A)
14: 361f463346d3409705042d85617b51e1c61f8821cc3c21f16ce9034d5b761c1f	00:11:49	Staking Infinitely (N/A)
15: aa78babccc4e6e29d3becac648489e6da5c375ae22566dd9cc65880210d81539	00:31:35	Staking Infinitely (N/A)
16: f9e9aa7608c8c134ff9c14ef92488c122b947fd27d8cfe31d6745546c462665b	01:00:22	Staking Infinitely (N/A)
17: f0e1913158cd650f98270490ded011fc138bb0a18bce9dcb796276b58f32340a	00:54:44	Staking Infinitely (N/A)
18: 4a407bb5161d9ad488e4feb1ce4870d5076d223d24160476275f2e292c290d21	00:54:33	Staking Infinitely (N/A)
19: 4a9a479460d135c51723254462919ff51e4b692f2bc4aedafb26316494f45a64	00:37:59	Staking Infinitely (N/A)

Note: The quorum shown here is the currently active voting height which is not necessarily the latest quorum. Quorums can only be voted on after a number of blocks have transpired.

Click here to see the last 1hrs worth of the stored quorum states

Last 5 checkpoints

Height	Block hash	Checkpoint Quorum
1991860	a1b7c21fce720a6b9cfa413ceb0b55ab50372d6404050e781f0b68bcb196562e	1991860; 20/20 signatures: ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓
1991856	7e40b98f1c3982d16dea7dffd380468bd722b0e4554211e13be0c1e9bee966f1	1991856; 20/20 signatures: ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓
1991820	4f73ba4fb4048dcd83d11bd5f0f0e26788f4483cdc7b31c9c723b75ce28b4b8c	1991820; 20/20 signatures: ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓
1991776	bfab2ad9439d9d33abcbb2b5ae09b797043cd9ec41663c36b53f3447a85f0a4d	1991776; 5/20 signatures: ✓ ✓ ✓ ✓ ✓ x x x x x x x x x x x x x x x
1991760	917ee102c8b09044dfa6119906211270f91d1eb0fcce176b188a46f7f0730e18	1991760; 20/20 signatures: ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓

Check here to see the last 50 checkpoints

No javascript / No web analytics trackers / No cookies / No external resources / Open Sourced
Explorer Version (api): patches-2025-08-25-05fdb31 (8.0) Arqma Version: 10.0.0-4b067e8c_Release
Latest source code
Forked from: onion-monero-blockchain-explorer
Copyright (C), 2019-2025 arqma.com