Arqma Blockchain Explorer

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

Server Time: 2026-08-20 19:26:07 | Transaction Pool | Autorefresh is OFF | Go to stagenet explorer | Go to mainnet explorer

Network difficulty: 152000172 | Hard fork: v19 | Hash rate: 1.267 MH/s | Staking Requirement: 100000.000000000 ARQ | Fee: 0.000000050/byte + 0.000090000/output | Median block size limit: 1024.00 kB | Data From 00:00:57 [h:m:s] ago

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

Arqma emission (fees) is 39895328.239012659 (1052.021992859) as of 2008126 block

Transaction Pool

(No Of TXs: 2, Size: 3.3350 kB, Updated every 5 seconds)

Age [HH:MM:SS] Type Transaction Hash Fee/Per kB In/Out TX Size [kB]
00:00:20 fd94c8187a8c1d93e6c70cc7ccbbfab354516b46cfb0bb4ae73b8872f19c7c2c 0.0003/0.0002 1/2 1.42
00:00:24 02c8b88ee68938d97bfccad47d3b5c44679563441fc48941ded6b376d20d4e0c 0.0003/0.0001 2/2 1.92

Transactions In Older Blocks

(Median size of 100 blocks: 1024.00 kB)

Height Age [y:d:h:m:s] Size [kB] Type Transaction Hash Fee Outputs In/Out TX Size [kB]
1375266 02:218:19:05:51 1.9268 9be98f2b16e792fdcea95953bc3a8b85018069386e63712723ff230e5d1d5f8d N/A 11.939454912 0/1 0.0996
aee6ace5d0553f806939f2d11b55d00f385526507f8b5c2cc1f7e6eb6f1a60f3 0.000001850 ? 1/2 1.8271
1375265 02:218:19:09:06 0.0996 9200c4794fc77046e622ecbf2e2425ccf70996cfa5ae9cf19409931f224d78f8 N/A 11.939458755 0/1 0.0996
1375264 02:218:19:09:53 19.9053 93cc6461ced9d8452a7a4b47957f2adc80e4f94cd478b3041dfdb7036db4eced N/A 11.939484758 0/1 0.0996
5535d7d97f886f78844fc74fc5937c64cb12f5e451d9288d9483edd0a43405b2 0.000013470 ? 15/2 13.1289
f1d6bf48fdee01be0b9c53bd741a92106f91547e9e1e058fd263e02791aa4c55 0.000006840 ? 7/2 6.6768
1375263 02:218:19:13:05 0.0996 e451950b388bbdb3a78fc41574a2823e0e6a980665ff24e15af34181ff85422d N/A 11.939470141 0/1 0.0996
1375262 02:218:19:15:12 0.0996 dc980b0d9032fda38d27d66fdeb0260bb4e592ed25192f9c8013218a055375d0 N/A 11.939475834 0/1 0.0996
1375261 02:218:19:15:37 0.0996 6459eb934a791be105a6d906e329f55bce7c68c1dfee1ee229f9c2229c1fe400 N/A 11.939481528 0/1 0.0996
1375260 02:218:19:15:44 0.0996 6d462afc2e2b3e75ebd8838a796cdd873af4a53b57e3cd57abb01726140ff419 N/A 11.939487221 0/1 0.0996
1375259 02:218:19:15:54 0.0996 f71cb759661cd5c8c9dc33ff7050b31f9eeb894a943f4e68446e40ce407cad39 N/A 11.939492914 0/1 0.0996
1375258 02:218:19:16:51 0.0996 3b51da686fb6cd9bf98a7502eed06b1940b1c800ced1b61bf8deb73ad75eacae N/A 11.939498607 0/1 0.0996
1375257 02:218:19:20:47 0.0996 e9c615bf712cef9935d18147c2750d2c61144ad111c806e6e2aca644a956bf4e N/A 11.939504300 0/1 0.0996
1375256 02:218:19:23:03 0.0996 c3dcbe1a12593164cd0e46c3be89e2ea650e1a42e0125271e9ba34c1b394d940 N/A 11.939509994 0/1 0.0996
1375255 02:218:19:24:12 0.0996 e8c73b15510e96dc691fa2ce3cf0e725a4d0ffc3cb926aa6455ea1bd2c657df7 N/A 11.939515687 0/1 0.0996
1375254 02:218:19:24:22 0.0996 21709f7e3cd6b1f64ee9fd998b899080937a452eb346ffd8418cfd799cda91e9 N/A 11.939521380 0/1 0.0996
1375253 02:218:19:26:57 5.5879 3f31bd100ff0e02b7457daaa0f7fcf33fb7539ce77308b1b6a0d8dc214a7b67d N/A 11.939532633 0/1 0.0996
6a8fbad81b5805d3978207bf52d72fe36217580bc14248ef3599b335e3862321 0.000001850 ? 1/2 1.8232
879aaef06040f7426ed0ff754145864d909ca0db7b8252617f04311af61ece79 0.000001850 ? 1/2 1.8262
a3534f1e5f4fbb9a25df2cb30241b3074bbe4dd914402d90c1b2a9cb7f389e6c 0.000001860 ? 1/2 1.8389
1375252 02:218:19:29:48 0.0996 1deec440848f84d1ae399afb2745aedff89f71915034cb8e58fd4d64777b65e2 N/A 11.939532766 0/1 0.0996
1375251 02:218:19:30:53 2.7422 ac83538d9ea5401f5b0c75ef1870f606adbd8c2361b0c3ecef5cdf4b59ed89ee N/A 11.939541150 0/1 0.0996
1edd4a2e12fc718df267dc7728726ad771f79cb5aece70d73fcfc7e366e7210b 0.000002690 ? 2/2 2.6426
1375250 02:218:19:43:08 5.1621 db23cd6eabedf9aec80351a780e0de0b87d3d0e2dd2991acc53c7ad4d1c30ce2 N/A 11.939549333 0/1 0.0996
09e262b9edff998aedc0ab3bf0c5795a076ba98224b957b439793d0669624e17 0.000005180 ? 5/2 5.0625
1375249 02:218:19:48:36 0.0996 bcb54caafe4474b892a84428444ab7cfef00b88bbd9e1fdc8ab60b10e73a0741 N/A 11.939549846 0/1 0.0996
1375248 02:218:19:50:14 7.2002 7e91ee916d115f6e1eed7e6e16c9e2d120c2fb72d2ce5a5bc157e84ee2b646a7 N/A 11.939562759 0/1 0.0996
3ed244f52874ce895c05e20a437ea0c47a94bd5a0dcd0c314dfd65c2d2de08ab 0.000002680 ? 2/2 2.6299
01562a07220cc9487fcc7def067715b93dbdb9ed92ba9950aa7f9eb410f23fe4 0.000002680 ? 2/2 2.6318
ee1e987ed3c578d30c70732181c66c896b8917bd090b6ad2118e762471b45a9e 0.000001860 ? 1/2 1.8389
1375247 02:218:19:51:12 0.0996 0a6ce537b76c99729c6a056b61231fd643726f0a637475b1f7ae6c5141a50678 N/A 11.939561232 0/1 0.0996
Prev
Current Page: 31643/100406
Next

Service Nodes

0 service nodes awaiting contributions, 2 decommissioned service nodes, and 47 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 (2)

(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.
cf8f65a97c31057a45dec63b065e23d0763c1ea88c7282fafd738e3e090ef01b 2/12 70 2001666 00:09:50 None (deregistration imminent!)
5a67c6e399571ec4665cc61cc19a5e84eeab60cf51c4f75fac5eea24a33d87e0 2/12 60 2001666 00:05:12 None (deregistration imminent!)

Active Service Nodes (47)

Public Key Contributors Operator Fee (%) Staking Requirement Last Reward Height Last Uptimr Proof Expiry Date UTC (Estimated)
45f9349a3ceee3a75d6142204286d37dacf81c1f9ec01a65e7b716269726635d 3/12 50 100000.000000000 2008080 00:10:30 Staking Infinitely
ab1264fe8acaba585069c1fb0afe0804a97bc00ef269c17231b7994024851111 4/12 35 100000.000000000 2008081 03:05:58 Staking Infinitely
c93716c955d7ced8be22fb112a0344fabde019949f2b26fedff327172ba6a973 2/12 66 100000.000000000 2008082 00:50:12 Staking Infinitely
e9ce4cbc023dd13600dd1b84e811838cccc09a169ab6cb51f537481242bddb1a 1/12 100000.000000000 2008083 00:28:19 Staking Infinitely
33ef2ff577821dfc3e8ba0b6a7b62759f092c53d798cc1a9c5ba85f59f549efc 1/12 100000.000000000 2008084 00:27:00 Staking Infinitely
2c9277494767de038291669f392ceb66b3889c23c574ab42db08e0b48ee8a7bf 1/12 100000.000000000 2008085 04:49:35 Staking Infinitely
80a869c7963e4c92ccd1032749e29b33e7e943f4e70cbe8d9a3110115a0a53e3 1/12 100000.000000000 2008086 00:09:07 Staking Infinitely
c9839bdce086483c6fae8ede8600e4410c5dcd2a431148689480ddfd4c6c9363 3/12 33 100000.000000000 2008087 19:17:45 Staking Infinitely
30f3281710c23bb2c9b11a8bc0a3f63876ad2d974a55f08db00dde2f1fce4f3e 1/12 100000.000000000 2008088 01:00:06 Staking Infinitely
361f463346d3409705042d85617b51e1c61f8821cc3c21f16ce9034d5b761c1f 1/12 100000.000000000 2008089 00:03:56 Staking Infinitely
+ 37 more ↪

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

Uptime quorum for height 2008124)

Public Key Last Uptime Proof Expiry Date UTC (Estimated)
Validators 10:
0: 28f7c771d9cd63b4c3d5c8261c153f7e05f23f67a562dc5c39635445e1d1d268 00:29:20 Staking Infinitely (N/A)
1: c93716c955d7ced8be22fb112a0344fabde019949f2b26fedff327172ba6a973 00:50:12 Staking Infinitely (N/A)
2: c98ab9fca45aec5e9c8ea6f7dd0660b3567e3691d3cfbc4e4b035e737706160b 01:03:48 Staking Infinitely (N/A)
3: f9e9aa7608c8c134ff9c14ef92488c122b947fd27d8cfe31d6745546c462665b 00:41:47 Staking Infinitely (N/A)
4: 2083e7a16cef72aced08ba92106bf9cff6725bede937ff82c1156fd7fa2f3c7a 00:09:23 Staking Infinitely (N/A)
5: b42fb5a319f9ef592ada30e483b64431d05386ba5692727d0e64a15802be3ef5 00:38:56 Staking Infinitely (N/A)
6: 33ef2ff577821dfc3e8ba0b6a7b62759f092c53d798cc1a9c5ba85f59f549efc 00:27:00 Staking Infinitely (N/A)
7: 30f9c742e16707fb9b0c9c2078ed750595e297e4a0f75b972794766e25447cfc 00:27:05 Staking Infinitely (N/A)
8: 2f235e88eada0dcabd49b9f2ee0fcd1002dbfabfe7dc273dc445e1e8abc220c0 00:59:51 Staking Infinitely (N/A)
9: aa78babccc4e6e29d3becac648489e6da5c375ae22566dd9cc65880210d81539 00:18:28 Staking Infinitely (N/A)
Nodes to test (39):
0: 3cb0bba8f15c0902db46604f9fb6badeb0f611a645e4b29fb899342107c1f8c7 00:25:08 Staking Infinitely (N/A)
1: cf8f65a97c31057a45dec63b065e23d0763c1ea88c7282fafd738e3e090ef01b 00:09:50 Staking Infinitely (N/A)
2: c338966f59c208f065e570e4631dced159118467b174e2cadc0bd59ff4768987 00:04:24 Staking Infinitely (N/A)
3: d3e9da49cf45266c3a0270253b0e2921dcbf939cfa52e5de31130d9ef5fb921d 09:02:57 Staking Infinitely (N/A)
4: 3a695a55e9442573865950ec85b393e7ade3a76690b62d0e992f32f246943bd1 00:46:55 Staking Infinitely (N/A)
5: f0e1913158cd650f98270490ded011fc138bb0a18bce9dcb796276b58f32340a 00:38:31 Staking Infinitely (N/A)
6: 94b370885630009cbe68165b641e51343bcb90aba151434230424f6e3ec4a6d2 08:12:35 Staking Infinitely (N/A)
7: 81ea05da87ecfe7d707a13ded483e5a0ee257c3ff802cd01742185bc87d803d9 01:00:34 Staking Infinitely (N/A)
8: ca0113d6999df9187b7959b602c7557cf9658a274fd89948c5aead79eb95a510 00:28:13 Staking Infinitely (N/A)
9: 45f9349a3ceee3a75d6142204286d37dacf81c1f9ec01a65e7b716269726635d 00:10:30 Staking Infinitely (N/A)
+ 29 more ↪

Uptime quorum for height 2008123)

Public Key Last Uptime Proof Expiry Date UTC (Estimated)
Validators 10:
0: f9e9aa7608c8c134ff9c14ef92488c122b947fd27d8cfe31d6745546c462665b 00:41:47 Staking Infinitely (N/A)
1: e9ce4cbc023dd13600dd1b84e811838cccc09a169ab6cb51f537481242bddb1a 00:28:19 Staking Infinitely (N/A)
2: 139595b1c4670eb35a9cc6d32b6c351c53422d6ebf9405d0e2de6edb09afa5f2 00:30:16 Staking Infinitely (N/A)
3: ab1264fe8acaba585069c1fb0afe0804a97bc00ef269c17231b7994024851111 03:05:58 Staking Infinitely (N/A)
4: a382ea37422bc7715fb954fd567ae77c7b8db3bf92a2d4ac48025e0122832641 00:01:48 Staking Infinitely (N/A)
5: 83b11eca71c4a2d77d256304fd422493ed4d290e3cb084bf76758d239fe9a0b4 01:00:22 Staking Infinitely (N/A)
6: 5d21979e8b9332bfc583b3855b5e1b047080dce4609a21454595892ca797f514 00:23:41 Staking Infinitely (N/A)
7: 848ad910440f790d4a687cad83b333f99dec1fb47bae617c7a02db65b2f1c244 00:02:28 Staking Infinitely (N/A)
8: f0e1913158cd650f98270490ded011fc138bb0a18bce9dcb796276b58f32340a 00:38:31 Staking Infinitely (N/A)
9: 361f463346d3409705042d85617b51e1c61f8821cc3c21f16ce9034d5b761c1f 00:03:56 Staking Infinitely (N/A)
Nodes to test (39):
0: 64704fc7e91c0d73d5a05f608f0899b45e99fa711383057dcc59064a98c257ab 18:13:51 Staking Infinitely (N/A)
1: 30f3281710c23bb2c9b11a8bc0a3f63876ad2d974a55f08db00dde2f1fce4f3e 01:00:06 Staking Infinitely (N/A)
2: bf84fec11377bd3f6a46c27484a8f46050274067047fefe4b15cfd566d68a671 00:55:50 Staking Infinitely (N/A)
3: 53b13c3b12f633765fad6a3af5e9910067af666c8c35940a5d0190ef05e86016 00:24:21 Staking Infinitely (N/A)
4: c93716c955d7ced8be22fb112a0344fabde019949f2b26fedff327172ba6a973 00:50:12 Staking Infinitely (N/A)
5: d3e9da49cf45266c3a0270253b0e2921dcbf939cfa52e5de31130d9ef5fb921d 09:02:57 Staking Infinitely (N/A)
6: 45f9349a3ceee3a75d6142204286d37dacf81c1f9ec01a65e7b716269726635d 00:10:30 Staking Infinitely (N/A)
7: 4a9a479460d135c51723254462919ff51e4b692f2bc4aedafb26316494f45a64 00:08:43 Staking Infinitely (N/A)
8: 781efae048bb90829a0c7ce9f4c9c34e572d236955e91f4b3c86a85effa632d5 00:11:31 Staking Infinitely (N/A)
9: 0a23d89cbd41b85c5bffec0f53289536393e1a91a6537caf7b2064d97f92f7bb 02:09:57:31 Staking Infinitely (N/A)
+ 29 more ↪

Uptime quorum for height 2008122)

Public Key Last Uptime Proof Expiry Date UTC (Estimated)
Validators 10:
0: a382ea37422bc7715fb954fd567ae77c7b8db3bf92a2d4ac48025e0122832641 00:01:48 Staking Infinitely (N/A)
1: 3a695a55e9442573865950ec85b393e7ade3a76690b62d0e992f32f246943bd1 00:46:55 Staking Infinitely (N/A)
2: 30f3281710c23bb2c9b11a8bc0a3f63876ad2d974a55f08db00dde2f1fce4f3e 01:00:06 Staking Infinitely (N/A)
3: 848ad910440f790d4a687cad83b333f99dec1fb47bae617c7a02db65b2f1c244 00:02:28 Staking Infinitely (N/A)
4: 4a407bb5161d9ad488e4feb1ce4870d5076d223d24160476275f2e292c290d21 01:07:05:28 Staking Infinitely (N/A)
5: 361f463346d3409705042d85617b51e1c61f8821cc3c21f16ce9034d5b761c1f 00:03:56 Staking Infinitely (N/A)
6: d3e9da49cf45266c3a0270253b0e2921dcbf939cfa52e5de31130d9ef5fb921d 09:02:57 Staking Infinitely (N/A)
7: 3cb0bba8f15c0902db46604f9fb6badeb0f611a645e4b29fb899342107c1f8c7 00:25:08 Staking Infinitely (N/A)
8: af591de4390b7c96bab0312158a390b186bf4064e306538b51b5621bbc314185 00:08:37 Staking Infinitely (N/A)
9: 75ed97a747c6b790917a62befd733ec67df8a7b5a9861baa432521eaa788d2e2 01:08:46 Staking Infinitely (N/A)
Nodes to test (39):
0: b42fb5a319f9ef592ada30e483b64431d05386ba5692727d0e64a15802be3ef5 00:38:56 Staking Infinitely (N/A)
1: c6c5fce08eef76dca701248665f0586f83da2243ba13781899abc525b3572063 00:03:50 Staking Infinitely (N/A)
2: 45f9349a3ceee3a75d6142204286d37dacf81c1f9ec01a65e7b716269726635d 00:10:30 Staking Infinitely (N/A)
3: e9ce4cbc023dd13600dd1b84e811838cccc09a169ab6cb51f537481242bddb1a 00:28:19 Staking Infinitely (N/A)
4: 64704fc7e91c0d73d5a05f608f0899b45e99fa711383057dcc59064a98c257ab 18:13:51 Staking Infinitely (N/A)
5: 81ea05da87ecfe7d707a13ded483e5a0ee257c3ff802cd01742185bc87d803d9 01:00:34 Staking Infinitely (N/A)
6: bf84fec11377bd3f6a46c27484a8f46050274067047fefe4b15cfd566d68a671 00:55:50 Staking Infinitely (N/A)
7: c98ab9fca45aec5e9c8ea6f7dd0660b3567e3691d3cfbc4e4b035e737706160b 01:03:48 Staking Infinitely (N/A)
8: 33ef2ff577821dfc3e8ba0b6a7b62759f092c53d798cc1a9c5ba85f59f549efc 00:27:00 Staking Infinitely (N/A)
9: 80a869c7963e4c92ccd1032749e29b33e7e943f4e70cbe8d9a3110115a0a53e3 00:09:07 Staking Infinitely (N/A)
+ 29 more ↪

Checkpoint quorum for height 2008124 (determined by block 2008113)

Public Key Last Uptime Proof Expiry Date UTC (Estimated)
0: ab1264fe8acaba585069c1fb0afe0804a97bc00ef269c17231b7994024851111 03:05:58 Staking Infinitely (N/A)
1: 2083e7a16cef72aced08ba92106bf9cff6725bede937ff82c1156fd7fa2f3c7a 00:09:23 Staking Infinitely (N/A)
2: c93716c955d7ced8be22fb112a0344fabde019949f2b26fedff327172ba6a973 00:50:12 Staking Infinitely (N/A)
3: 30f3281710c23bb2c9b11a8bc0a3f63876ad2d974a55f08db00dde2f1fce4f3e 01:00:06 Staking Infinitely (N/A)
4: c442b8c2be6b9175211390d4dbf3d3c6b9c8132517335eabbffce8b68da71b36 00:12:32 Staking Infinitely (N/A)
5: bf84fec11377bd3f6a46c27484a8f46050274067047fefe4b15cfd566d68a671 00:55:50 Staking Infinitely (N/A)
6: 33ef2ff577821dfc3e8ba0b6a7b62759f092c53d798cc1a9c5ba85f59f549efc 00:27:00 Staking Infinitely (N/A)
7: a382ea37422bc7715fb954fd567ae77c7b8db3bf92a2d4ac48025e0122832641 00:01:48 Staking Infinitely (N/A)
8: 361f463346d3409705042d85617b51e1c61f8821cc3c21f16ce9034d5b761c1f 00:03:56 Staking Infinitely (N/A)
9: 050e45639e86a90ca465c5194642d9fee300ac170acdbb2c0144fc8ebaaf6b82 00:09:22 Staking Infinitely (N/A)
10: 5d21979e8b9332bfc583b3855b5e1b047080dce4609a21454595892ca797f514 00:23:41 Staking Infinitely (N/A)
11: d3e9da49cf45266c3a0270253b0e2921dcbf939cfa52e5de31130d9ef5fb921d 09:02:57 Staking Infinitely (N/A)
12: ca0113d6999df9187b7959b602c7557cf9658a274fd89948c5aead79eb95a510 00:28:13 Staking Infinitely (N/A)
13: f9e9aa7608c8c134ff9c14ef92488c122b947fd27d8cfe31d6745546c462665b 00:41:47 Staking Infinitely (N/A)
14: 28f7c771d9cd63b4c3d5c8261c153f7e05f23f67a562dc5c39635445e1d1d268 00:29:20 Staking Infinitely (N/A)
15: 81ea05da87ecfe7d707a13ded483e5a0ee257c3ff802cd01742185bc87d803d9 01:00:34 Staking Infinitely (N/A)
16: 848ad910440f790d4a687cad83b333f99dec1fb47bae617c7a02db65b2f1c244 00:02:28 Staking Infinitely (N/A)
17: 0a23d89cbd41b85c5bffec0f53289536393e1a91a6537caf7b2064d97f92f7bb 02:09:57:31 Staking Infinitely (N/A)
18: 53b13c3b12f633765fad6a3af5e9910067af666c8c35940a5d0190ef05e86016 00:24:21 Staking Infinitely (N/A)
19: c9839bdce086483c6fae8ede8600e4410c5dcd2a431148689480ddfd4c6c9363 19:17:45 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
2008124 c84b5bb2c023bb52b15c0acadbfcfcbae7c6d6a5b3ee870ca1938ac571bf5273 2008124; 11/20 signatures: x x x x x x x x x
2008120 ce1f18a58e85496badb617ec342bd4700f9c7d4a86f1ef6eb3c15acdc8c7c476 2008120; 12/20 signatures: x x x x x x x x
2008080 9bacb183389c1b19914d7efbde7ca979822bf5e6c542aae4a1ad1cfbdbc2176d 2008080; 8/20 signatures: x x x x x x x x x x x x
2008020 1217fb6fff6813479b4e29a49c6b5e1306cf67f55ea3da626f8075944cfe9ce5 2008020; 10/20 signatures: x x x x x x x x x x
2007960 ad2b34b4341a01e5a5c8725a3083b4f045b09f2e2172a14eb2f14ced511b1a4b 2007960; 9/20 signatures: x x x x x x x x x x x

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